Protective Relays
Table of Contents
PAGE 1
11
Protective Relays
KILOVAC WD Series, DIN Rail or Screw Mounted Protective Relays
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-2
KILOVAC WD25 Paralleling Relays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-3
KILOVAC WD2759 Over/Undervoltage Relays. . . . . . . . . . . . . . . . . . . . . . . . . . 11-4, 11-5
KILOVAC WD32 Reverse Power Relays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-6, 11-7
KILOVAC WD47 Phase Sequence Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-8
KILOVAC WD5051 1Ø and 3Ø Overcurrent Relays. . . . . . . . . . . . . . . . . . . . . 11-9, 11-10
KILOVAC WD81OU Over/Underfrequency Relays. . . . . . . . . . . . . . . . . . . . . . . . . . . 11-11
Voltage Sensitive Relays
WUV/WOV DC Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-12
WUV/WOV Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-13
WUVT/WOVT Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14
WOUV DC Series, Over/Undervoltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-15
WOUVT Series, Over/Undervoltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-16
250 Series, Over/Undervoltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-17
D100X Series, Close Differential. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-18
D101X Series, 3 Phase Adjustable, Close Differential . . . . . . . . . . . . . . . . . . . . . . . . 11-19
Reverse Power Relay
700 Series w/ Adjustable Time Delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-20
Phase Failure Relay
1000 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-21
Phase Sequence Relay
900 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-22
Current Balance Relay
WCB Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-23
Current Sensitive Relays
WC1 & WCT1 Series, Overcurrent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-24
WC3 & WCT3 Series, Overcurrent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-25
Current Differential Relay
WCD Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-26
Paralleling Relays
1800 Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-27
Selection Guide. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-27
Frequency Sensitive Relays
WOF & WUF Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-28
WOUF Series, Over/Underfrequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-29
20-000 Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-30
25-000 Series. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-31
20-050-19 Series (Voltage/Frequency). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-32
Ground Fault Relays
WGD Series — Floating Ground. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-33
WC1G Series — Grounded. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-34
Additional Relays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-35 – 11-43
Protective Relays
KILOVAC WD Series, DIN Rail or Screw Mounted Protective Relays
Product Facts
n WD25
Paralleling (Synch
Check) Relays
n WD2759
Relays
Over/undervoltage
Installation and Maintenance
Information
n WD32
Reverse Power
Relays
n WD47
Phase Sequence
Relays
n WD5051
Single- or
Three-Phase Overcurrent
Relays
n WD81OU
Over/
Underfrequency Relays
n File
E58048,
DIN EN50022-35
R
Users should thoroughly review the
technical data before selecting a product
part number. It is recommended that user
also seek out the pertinent approvals
files of the agencies/laboratories and
review them to ensure the product meets
the requirements for a given application.
The WD series offers
several different models
of protective relays in a
common package that is
suitable for either DIN rail
or screw mounting. These
flexible, multifunction
devices offer user selectable
voltages, sense currents
and frequencies. Adjustable
time delays are standard.
This allows a single part
number to be suitable
for multiple applications,
thereby reducing inventory
costs.
Installation — To mount the WD
series protective relay on a DIN rail,
hook the top edge of the cutout on the
base of the case over one edge of the
DIN rail, then press the opposite side
of the cutout containing the release clip
over the opposite side of the DIN rail.
To remove or reposition the relay, lever
the release clip and move the relay as
required. WD series relays should be
installed in a dry location where the
ambient temperature will be within the
operating temperature range.
Maintenance — WD series protective
relays are solid state devices that require
no maintenance. They are not designed
to be serviced by the user. Consult
KILOVAC customer service at 805-2202023 if repairs should be necessary.
Outline Dimensions
16 X M3.5
1.38
(35.0)
2.87
(73.0)
Specifications Common to
All Models
Power Consumption —
2.5VA, maximum.
Contact Ratings —
5 amps, resistive, at 120VAC.
5 amps, resistive, at 30VDC.
Isolation from Control to Sense
Inputs — 2,500VAC.
Mechanical Life —
10 million operations.
Shock — 10g.
Vibration — 0.062 (1.57) double
amplitude at 10-55 Hz.
Terminals — M3.5 screws.
Maximum Wire Size — 2 x 24 AWG
(2.5mm2) solid to DIN 46288 or 2 x 16
AWG (1.5mm2) stranded w/end sleeves.
Operating Temperature Range —
-40°C to +60°C.
Enclosure — Plastic case (not sealed).
Mounting Options — Snap mounts
on standard DIN rail (DIN-EN 50022-35)
or panel mounts with M4, M5, #8 or
#10 screws.
Weight — 14.4 oz. (400g) approximately.
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
4.41
(112.0)
0.35
(9.0)
2.95
(75.0)
M5
M4
2.36
(60.0)
1.97
(50.0)
2.36
(60.0)
Protective Relays
KILOVAC WD25 Paralleling Relays
Product Facts
n Function
Sense Voltage
Voltage (nominal)
Synch Voltage (% of nom.)
Dead Bus Voltage (% of nom.)
25
n ANSI/IEEE
C37.90-1978
120 208 277 480
6 - 30% (≈ 4°- 20° electrical degree)
10 - 70% (Dead Bus)
Control Voltage
WD25 Operation
WD25 Specifications
WD25 paralleling relays
are used to ensure that two
circuits are synchronized.
When voltage, phase
relationship and frequency
are within the selected
synchronizing limits, the
output relay will energize.
The WD25 paralleling relay
allows for a generator to be
brought online without damage or system disturbance.
WD25 series with a “dead
bus” feature will energize for
a synchronized condition or
an “on line” generator, “dead
bus” condition. This “dead
bus” feature allows the generator to energize a dead
bus. The “double dead bus”
feature permits paralleling
of two buses when: (a) both
the line voltages are equal
and in phase, or (b) when
either bus is “hot” and the
other bus is “dead.”
Nominal Operating Range —
120, 208, 277 or 480 VAC, selectable.
Maximum Sensing Range —
575VAC.
Nominal Frequency Range —
40-400 Hz.
Contact Form — 2 form C (DPDT).
Model WD25
Input Voltage (VDC)
Input Voltage (VAC)
-0X1
18 to 54
—
-0X2
13.5 to 32
—
-0X3
100 to 200
100 to 140
WD25 Controls
WD25 Calibration
11
WD25 Connections
Protective Relays
The calibration marks on the faceplate
are provided only as guides. Proper
calibration requires using an accurate
voltmeter. Use the following procedure
to calibrate the WD25:
1. Remove the cover.
2. Adjust the SYNC VOLTAGE control
fully counterclockwise (CCW). Apply
nominal voltage to the LINE B (bus)
sensing terminals.
3. Apply the maximum desired
synchronization voltage to the LINE
A (generator) terminals. This voltage
should be in phase with LINE B (bus)
voltage and have the same frequency.
4. Slowly adjust the SYNC VOLTAGE
control clockwise (CW) until the relay
energizes.
WD25 Typical Hookup
Ordering Information
Typical Part Number
WD 25 -00 2
1. Basic Series:
WD = DIN mount Protective Relay.
2. Type:
25 = Paralleling Relay.
3. Dead Bus:
00 = Double Dead Bus
01 = Single Dead Bus
02 = Generator to Generator
4. Control Voltage:
1 = 18 to 54VDC
2 = 13.5 to 32 VDC
3 = 100-200VDC or 100-140VAC.
Our authorized distributors are more likely to stock these items.
WD25-001
WD25-013
NOTE: For single dead bus option,
connect the generator to 1 & 3 and
the bus to 5 & 7.
PAGE 3
Protective Relays
KILOVAC WD2759 Over/Undervoltage Relays
Product Facts
WD2759 Operation
n Function
WD2759 AC voltage sensing relays provide voltage
monitoring and protection
in AC systems from 50 to
400 Hz. Sensing voltages,
number of phases, over and
undervoltage setpoint, and
time delays are user configured. WD2759 voltage
relays operate when the
externally adjustable trip
point is reached. An external time delay control is
provided with an adjustment
of .5 to 10 seconds. This
time delay may be used to
prevent false tripping when
there are slight variations
in the voltage supply. On
overvoltage (OV) the output
relay energizes when the
input signal exceeds the
trip point. On undervoltage
(UV) the output relay energizes when the input signal
goes below the trip point.
A green LED indicates
power to the relay. Red
LED lights indicate the state
of the undervoltage and
overvoltage trips.
27/59
n ANSI/IEEE
C37.90-1978
Sense Voltage
Voltage (nominal)
UV Adjustment Range
OV Adjustment Range
120 208 277 480
72-120 125-208 166-277 288-480
120-168 208-291 277-388 480-672
Control Voltage
Model WD2759
Input Voltage (VDC)
Input Voltage (VAC)
-001
18 to 54
—
WD2759 Specifications
Nominal Operating Range —
120, 208, 277 or 480 VAC, selectable.
Maximum Sensing Range —
700VAC.
Nominal Frequency Range —
50-400 Hz.
Contact Form — 1 form C (SPDT) for
undervoltage and 1 form C (SPDT) for
overvoltage.
Time Delay Adjustment —
0.5 to 10 sec.
WD2759 Calibration
The calibration marks on the faceplate
have a maximum error of 10% and are
provided only as guides. Proper
calibration requires using an accurate
voltmeter in parallel with the input
signal. Use the following procedure to
calibrate your relay.
OVER VOLTAGE
1. Remove cover.
2. Adjust the TRIP SET control fully
clockwise (CW) and the TIME DELAY
control fully counterclockwise (CCW).
3. Apply the desired trip voltage to the
relay.
4. Slowly adjust the TRIP SET control
CCW until the relay trips.
Ordering Information
Typical Part Number
WD 2759 -002
1. Basic Series:
WD = DIN mount Protective Relay.
2. Type:
2759 = Over/Undervoltage Relay.
3. Control Voltage:
001 = 18 to 54VDC
002 = 13.5 to 32 VDC
003 = 100-200VDC or 100-140VAC.
Our authorized distributors are more likely to stock these items.
WD2759-003
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
-002
13.5 to 32
—
-003
100 to 200
100 to 140
5. Remove the applied voltage (do not
change the voltage level) and set the
TIME DELAY control to the desired
time delay.
6. Apply the trip voltage to the relay and
measure the time to trip.
7. Adjust the TIME DELAY and repeat
steps 4 and 5 until you have the
desired time delay.
UNDER VOLTAGE
1. Remove cover.
2. Adjust the TRIP SET control fully
CCW and the TIME DELAY control
fully CCW.
3. Decrease the applied sensing voltage
from the nominal value until the
desired tripping voltage is reached.
4. Slowly adjust the TRIP SET control
CW until the relay trips.
5. Set the TIME DELAY control to the
desired time delay and apply nominal
voltage to the relay.
6. Step down the applied voltage from
nominal to a level jest below the trip
level set in Step 3 and measure the
time delay.
7. Adjust the TIME DELAY and repeat
steps 4 and 5 until the desired time
delay is achieved.
Protective Relays
KILOVAC WD2759 Over/Undervoltage Relays (Continued)
WD2759 Controls
WD2759 Connections
11
Protective Relays
WD2759 Typical Hookup
PAGE 5
Protective Relays
KILOVAC WD32 Reverse Power Relays
Product Facts
WD32 Operation
n Function
WD32 reverse power relays
are used to monitor the
direction of power from AC
generators. This is accomplished by measuring I
cos q. If current from the
generator is reversed and
exceeds the adjustable
setting, the relay will trip.
A 0.5 to 20 second time
delay is provided. A correct setting of the trip point
and time delay will prevent
motorizing the generator
and prevent tripping during
transients that occur while
synchronizing. A POWER
LED indicates the condition
of the power supply and a
REVERSE POWER TRIP
LED indicates the output
status of the relay.
32
Control Voltage
WD32 Specifications
Nominal Operating Range —
120 to 480 VAC, 1 or 3 phase.
Maximum Sensing Range —
575VAC.
Nominal Sensing Current — 5A.
Nominal Frequency Range —
WD32-00X — 40-400 Hz.;
WD32-01X — 60 Hz.
Contact Form — 2 form C (DPDT).
Time Delay Adjustment —
0.5 to 20 sec.
Sense Current — Reverse Power
Trip: 0.2 to 1.0A (4-20% of nominal
sense current).
Model WD32
Input Voltage (VDC)
Input Voltage (VAC)
-001
18 to 54
—
WD32 Calibration
The calibration marks on the faceplate
have a maximum error of 10% and
are provided only as guides. Proper
calibration requires using an accurate
Current Meter in series with the input
current. Use the following procedure to
calibrate your relay.
REVERSE POWER
1. Remove cover.
2. Adjust the TRIP SET control fully
clockwise (CW) and the TIME DELAY
control fully counterclockwise (CCW).
3. Apply the desired trip current to the
relay. NOTE: for the Reverse Power
(WD32-00X) a resistive load must
be used and for the Reverse kVAR
(WD32-01X) an inductive load must
be used.
4. Slowly adjust the TRIP SET control
CCW until the relay trips.
5. Remove the applied Current and
set the TIME DELAY control to the
desired time delay.
6. Re-apply the Current (10% more
than the trip current) to the relay and
measure the time to trip.
7. Adjust the TIME DELAY and repeat
steps 4 and 5 until you have the
desired time delay.
Ordering Information
Typical Part Number
WD 32 -00 2
1. Basic Series:
WD = DIN mount Protective Relay.
2. Type:
32 = Reverse Power Relay.
3. Load:
00 = Resistive (power)
01 = Inductive (kVAR, 60 Hz.)
4. Control Voltage:
1 = 18 to 54VDC
2 = 13.5 to 32 VDC
3 = 100-200VDC or 100-140VAC.
Our authorized distributors are more likely to stock these items.
WD32-003
WD32-011
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
-002
13.5 to 32
˜
-003
100 to 200
100 to 140
Protective Relays
KILOVAC WD32 Reverse Power Relays (Continued)
WD32 Controls
WD32 Connections
11
Protective Relays
WD32 Typical Hookup
PAGE 7
Protective Relays
KILOVAC WD47 Phase Sequence Relays
Product Facts
n Function
Control Voltage
Model WD47
Input Voltage (VDC)
Input Voltage (VAC)
47
n ANSI/IEEE
C37.90-1978
WD47 Operation
WD47 Specifications
WD47 phase sequence
relays are designed to
monitor the correct phase
rotation and loss of phase
of three phase ac systems
from 50 to 400 Hz. An
incorrect phase sequence or
loss of any phase will cause
the WD47 to pickup. When
the phase sequence is corrected or the lost phase is
restored the
contacts dropout. Red
LED’s light to indicate a fault
condition. A green LED
indicates power to the relay.
The WD47 is often used to
detect reverse phase rotation or loss of phase to generators, busses, motors, and
transformers.
Nominal Operating Range —
120 to 480 VAC.
Maximum Sensing Range —
575VAC.
Nominal Frequency Range —
40-400 Hz.
Contact Form — 2 form C (DPDT).
WD47 Controls
WD47 Calibration
The WD47 has no adjustments and
no calibration is necessary. Proper
operation may be verified as follows:
1. Apply a nominal, three-phase input
with the correct phase sequence.
The output relay should dropout and
the green LED should light.
2. Apply a nominal, three-phase input
with an incorrect phase sequence.
The output relay should pickup and
the red LED should light.
3. Apply only one or two phases with
the correct phase sequence. The
output relay should pickup and the
red LED should light.
WD47 Connections
WD47 Typical Hookup
Ordering Information
Typical Part Number
WD 47 -002
1. Basic Series:
WD = DIN mount Protective Relay.
2. Type:
47= Phase Sequence Relay.
3. Control Voltage:
001 = 18 to 54VDC
002 = 13.5 to 32 VDC
003 = 100-200VDC or 100-140VAC.
Our authorized distributors are more likely to stock these items.
WD47-001
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
-001
18 to 54
—
-002
13.5 to 32
—
-003
100 to 200
100 to 140
Protective Relays
KILOVAC WD5051 1Ø and 3Ø Overcurrent Relays
Product Facts
WD5051 Operation
n Function
WD5051 AC current sensing relays provide current
monitoring and protection
in AC systems from 50 to
400 Hz. Nominal Sensing
Current, Instantaneous Over
Current setpoint, Time Over
Current setpoint, and Time
Over Current time delay are
user configured. WD5051
current relays operate when
the externally adjustable
trip point is reached. An
external time over current
time delay control is provided with an adjustment
of .5 to 20 seconds. This
time delay may be used to
prevent false tripping when
there are slight variations
in the sensed current. With
control power applied, the
Instantaneous Over Current
(IOC) contacts pick-up when
the input signal exceeds the
IOC trip setpoint. Similarly,
with control power applied,
the Time Over Current
(TOC) contacts pick-up after
the preset time delay when
the Sense Current rises
above the TOC trip setpoint.
The IOC contacts may also
be configured to function as
an under current relay. A
green LED indicates power
to the relay. Red LED lights
indicate the state of the IOC
and TOC trips.
5051
Sense Current
Current (nominal) 1 3 6 8
IOC
0.2 to 1.2 0.6 to 3.6 1.2 to 7.2 1.6 to 9.6
TOC
0.2 to 1.2 0.6 to 3.6 1.2 to 7.2 1.6 to 9.6
Control Voltage
Model WD5051
Input Voltage (VDC)
Input Voltage (VAC)
-001
18 to 54
—
-002
13.5 to 32
—
-003
100 to 200
100 to 140
WD5051 Calibration
The calibration marks on the faceplate
are provided only as guides. Proper
calibration requires using an accurate
ammeter in series with the current
source. Use the following procedure to
calibrate your relay:
OVERCURRENT
1. Remover the cover.
2. Adjust the TRIP SET control fully
clockwise (CW) and the TIME DELAY
control (TOC only) fully counterclockwise (CCW).
3. Apply the desired trip current to the
relay.
4. Slowly adjust the TRIP SET control
CCW until the relay trips.
5. Remove the applied current (do not
change the current level). Set the
TIME DELAY (TOC only) control to
the desired time delay.
Ordering Information
Typical Part Number
WD 5051 -002
1. Basic Series:
WD = DIN mount Protective Relay.
2. Type:
5051 = Single Phase Overcurrent Relay.
5051-3 = Three Phase Overcurrent Relay.
3. Control Voltage:
001 = 18 to 54VDC
002 = 13.5 to 32 VDC
003 = 100-200VDC 0r 100-140VAC.
Our authorized distributors are more likely to stock these items.
WD5051-001
WD5051-003
WD5051-3-001
PAGE 9
11
Protective Relays
WD5051 Specifications
Sense Current Full Scale — 1, 3, 6
or 8A, selectable.
Maximum Sensing Current —
10A continuous; 30A for 10 sec.;
60A for 2.5 sec.; 100A for 0.9 sec..
Nominal Frequency Range —
50-400 Hz.
Contact Form — 1 form C (SPDT) for
IOC and 1 form C (SPDT) for TOC.
TOC Time Delay Adjustment —
0.5 to 20 sec.
IOC Operate Time (max.) —
0.2 sec.
Protective Relays
KILOVAC WD5051 1Ø and 3Ø Overcurrent Relays (Continued)
WD5051 Controls
WD5051 Connections
WD5051
Single Phase Model
WD5051-3
Three Phase Model
WD5051 Typical Hookup
WD5051
Single Phase Model
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
WD5051-3
Three Phase Model
Protective Relays
KILOVAC WD81OU Over/Underfrequency Relays
Product Facts
n Function
Sense Frequency
Frequency (nominal)
UF Adjustment Range
OF Adjustment Range
81 OU
n ANSI/IEEE
C37.90-1978
WD81OU Calibration
WD81OU frequency
relays are used to provide
frequency monitoring and
protection to generators,
buses, power supplies, and
other equipment. The relay
operates at voltages from
120 to 480 Vac and at
nominal frequencies of 50,
60, and 400 Hz. External
controls include nominal
frequency selection, under
frequency (UF) trip set,
over frequency (OF) trip
set, UF time delay, and OF
time delay. A green LED
indicates power to the
relay. Red LED’s indicate
the status of the UF and
OF trips.
The calibration marks on the faceplate
are provided only as guides. Proper
calibration requires using an accurate
frequency meter in parallel with the input
signal.
UNDER FREQUENCY
1. Remove the cover.
2. Set the SENSE FREQUENCY to the
nominal system frequency. Adjust
the Under Frequency TRIP SET fully
clockwise (CW) and the TIME DELAY
control fully counterclockwise (CCW).
3. Apply the desired trip frequency to
the relay.
4. Slowly adjust the TRIP SET control
CCW until the relay trips.
5. Set the TIME DELAY control to the
desired time delay and apply nominal
frequency to the relay.
6. Step down the applied frequency
from nominal to just below the trip
level set in Step 4 and measure the
time delay.
7. Adjust the TIME DELAY and repeat
steps 5 and 6 until the desired time
delay is set.
OVER FREQUENCY
1. Remove the cover.
2. Set the SENSE FREQUENCY to the
nominal system frequency. Adjust
the OF TRIP SET and TIME DELAY
controls fully counterclockwise (CCW).
3. Apply the desired trip frequency to
the relay.
4. Slowly adjust the TRIP SET control
clockwise (CW) until the relay trips.
5. Set the TIME DELAY control to the
desired time delay and apply nominal
frequency to the relay.
6. Step down the applied frequency from
nominal to just below the trip level set
in Step 4 and measure the time delay.
7. Adjust the TIME DELAY and repeat
steps 5 and 6 until the desired time
delay is set.
WD81OU Specifications
Nominal Operating Frequency —
50, 60 or 400 Hz., selectable.
Maximum Frequency @ 400 Hz.
Nominal — 1000 Hz.
Nominal Sensing Voltage —
20-480VAC.
Maximum Sensing Voltage —
575VAC.
Contact Form — 1 form C (SPDT) for
underfrequency and 1 form C (SPDT) for
overfrequency.
Time Delay Adjustment — 0.5 to
10 sec.
Ordering Information
Typical Part Number
60
48-60
60-72
400
360-400
400-480
Control Voltage
Model WD81OU
Input Voltage (VDC)
Input Voltage (VAC)
-001
18 to 54
—
-002
13.5 to 32
—
-003
100 to 200
100 to 140
WD81OU Controls
11
Protective Relays
WD81OU Operation
50
40-50
50-60
WD81OU Connections
WD81OU Typical Hookup
WD 81OU -002
1. Basic Series:
WD = DIN mount Protective Relay.
2. Type:
81OU = Over/Underfrequency Relay.
3. Control Voltage:
001 = 18 to 54VDC
002 = 13.5 to 32 VDC
003 = 100-200VDC or 100-140VAC.
Our authorized distributors are more likely to stock these items.
None at present.
PAGE 11
Protective Relays
WUV/WOV DC Series
Product Facts
n ANSI/IEEE
Product Specifications
C37.90-1978
Undervoltage Models
The relay is energized at
normal voltage, N.C. contacts will open and N.O.
contacts will close. The
relay will de-energize when
the voltage drops below the
U/V set point.
Overvoltage Models
The relay is de-energized at
normal voltage, N.C. contacts are closed and N.O.
contacts are open. The
relay will energize, when the
voltage rises above the O/V
set point.
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
(+)
Nominal Voltage — 12 VDC to 560
VDC
Drop-out Point (u/v models) —
70-100% of nominal voltage,
screwdriver adjustable
Pick-Up Point (o/v models) —
100-125% of nominal voltage,
screwdriver adjustable
Output Contacts — One set N.O.,
One set N.C.
Contact Ratings —
5 amp resistive at 120 VAC or 28 VDC
Operating Temperature Range —
-40˚C to +75˚C
Temperature Effects — Less than
1% voltage drift over the temperature
range
Power Consumption —
12 to 60 VDC models — 1 W max.
120 to 305 VDC models — 2 W max.
405 to 470 VDC models — 3 W max.
560 VDC model — 4 W max.
Time Delay — A short duration delay
is provided to prevent nuisance tripping
due to momentary dips or surges in
voltage. The drop-out delay, following a
voltage fault is 75 to 100 milliseconds.
(–)
Notes:
1. R
emove black screws for
access to the O/V and U/V trip
adjustment.
2. C
lockwise rotation of the adjustment potentiometer will raise the
voltage trip point.
3. The
adjustments are by means of
a single turn potentiometer. Use
a small screwdriver and do not
force beyond the limit stops.
Ordering Information
Sample Part Number
WOV -12DC -A
Type:
WOV - Overvoltage
WUV - Undervoltage
Line Voltage VDC
12DC
125DC
18DC
240DC
24DC
250DC
28DC
305DC
32DC
405DC
48DC
430DC
60DC
470DC
120DC
560DC
Options:
Blank - Standard
A = 2 Form A Contacts
B = 2 Form B Contacts
H = 125 VDC Contacts
P = Transient Protection
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
Transient Protection — All voltage
relays will withstand momentary voltage
surges of twice the nominal rated input
voltage (standard).
Option “P” provides additional transient protection which complies with the
requirements of ANSI/IEEE C37.90-1978
Consult factory for additional
models.
Protective Relays
WUV/WOV Series
Product Facts
n Function
27/59
n ANSI/IEEE
n UL
Product Specifications
TERMINAL STRIPS
#6 - 32 SCREWS
C37.90-1978
File No. E58048
n CSA
File No. LR61158
R
R
3.0
3.0
1 /2
3 7 /8
3
2
3/4
1 /2
3
11 / 64" DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Notes:
1. R
emove black screw for access to
the voltage trip adjustment.
2. C
lockwise rotation of the adjustment potentiometer will raise the
voltage trip point.
Single Phase
Three Phase
Typical Time Curve
Ordering Information
Sample Part Number
Type:
WUV - Undervoltage
WOV - Overvoltage
No. Phases
1 = Single
3 = Three
Line Voltage VAC
120 416
208 440
220 460
230 480
240 525
380 575
Options
P - Transient Protection
A - Two Normally Open Contacts
B - Two Normally Closed Contacts
H - 125VDC, 3A Contacts
WUV -1 -120
Voltage Above Set Point
40.0
30.0
Overvoltage Relays
WOV Series
20.0
10.0
0.0
-10.0
0
0.05
0.1
0.15
0.2
Pick-Up Time Delay
0.25
0.3
Transient Protection — All voltage
relays will withstand momentary voltage
surges of twice the nominal rated input
voltage (standard).
Option “P” provides additional transient protection which complies with the
requirements of ANSI/IEEE C37.90-1978
Consult factory for additional
models.
PAGE 13
11
Protective Relays
Voltage sensitive relays
are available for both AC
and DC applications for
over/undervoltage protection. Combination over/
undervoltage relays provide
bandpass capabilities. AC
relays are either single or
three-phase type. Three
phase models are designed
to sense the average of the
three phases or the highest single phase. Voltage
trip points are screwdriver
adjustable, and operation
is time-delayed so that
momentary voltage transients will not cause nuisance tripping.
Nominal Voltage — 120 VAC to
575 VAC
Phase — Single or Three
Line Frequency — 50-400 Hz
Pick-up to Drop-out Differential —
2.5% maximum
Drop-out Point (u/v models) —
70-100% of nominal voltage,
screwdriver adjustable
Pick-Up Point (o/v models) —
100-125% of nominal voltage,
screwdriver adjustable
Output Contacts — One set N.O.,
One set N.C.
Contact Ratings —
5 amp resistive at 120 VAC or 28 VDC
Operating Temperature Range —
-20˚C to +65˚C
Power Consumption —
2 VA maximum
Time Delay — 150-300 ms (UV Model)
Minimum Life — 500,000 operations
Protective Relays
WUVT/WOVT Series
Product Facts
n Function
27/59
n ANSI/IEEE
n UL
Product Specifications
TERMINAL STRIPS
#6 - 32 SCREWS
C37.90-1978
File No. E58048
n CSA
File No. LR61158
R
R
4
1 /8
1 /2
5 /8
4
Overvoltage Models
The relay is de-energized at
normal voltages, N.C. contacts are closed and N.O.
contacts are open. The
relay will energize, when the
voltage rises and remains
above the O/V set point for
the duration of the set time
delay.
3
Undervoltage Models
The relay is energized at
normal voltage, N.C. contacts will open and N.O.
contacts will close. The
relay will de-energize when
the voltage drops and
remains below the U/V set
point for the duration of the
set time delay.
3.0
3
1 /2
4
1 /4
11 / 64 " DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Single Phase
Three Phase
Ordering Information
Sample Part Number
Type:
WUVT - Undervoltage
WOVT - Overvoltage
WUVT -1 -120
Nominal Voltage — 100 VAC to
575 VAC
Phase — Single or Three
Line Frequency — 50-400 Hz
Pick-up to Drop-out Differential —
1% typical
Drop-out Point (u/v models) —
70-100% of nominal voltage,
screwdriver adjustable
Pick-Up Point (o/v models) —
100-125% of nominal voltage,
screwdriver adjustable
Output Contacts — One set N.O.,
One set N.C.
Contact Ratings —
5 amp resistive at 120 VAC or 28 VDC
Operating Temperature Range —
-40˚C to +70˚C
Power Consumption —
3 VA maximum
Time Delay — 0.5 to 20 seconds,
screwdriver adjustable
Voltage Reset — The reset is automatic when voltage returns to normal.
Notes:
1. R
emove black screws for access
to the voltage and time delay
adjustment potentiometer.
2. C
lockwise rotation of the voltage
adjust potentiometer will raise the
voltage trip point.
3. C
lockwise rotation of the time
adjust potentiometer will increase
the time delay (Pick-up time for
O/V models, drop-out time for U/V
models).
4. T
he adjustments are single turn
potentiometers, use a small
screwdriver and do not force
beyond the limit stops.
5. O
n U/V models, when the voltage
falls to approximately 33% of
nominal or below, the relay will
drop out in 0.150 to 0 .300 seconds, regardless of the time delay
setting.
No. Phases
1 = Single
3 = Three (line to line)
Line Voltage VAC
100 240
115 380
120 416
150 440
200 460
208 480
220 525
230 575
Options:
Blank - Standard
A = 2 Form A Contacts
B = 2 Form B Contacts
H = 125VDC 3A Contacts
P = Transient Protection
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
Transient Protection — All voltage
relays will withstand momentary voltage
surges of twice the nominal rated input
voltage (standard).
Option “P” provides additional transient protection which complies with the
requirements of ANSI/IEEE C37.90-1978
Consult factory for additional
models.
Protective Relays
WOUV DC Series, Over/Undervoltage
Product Facts
n ANSI/IEEE
Product Specifications
PS
TRI S
LS
INA CREW
M
S
R
TE - 32
#6
C37.90-1978
2 13/16
2 .0
3
3
3
7/
1/
2
8
The relay will energize at
normal voltage conditions.
The normally open contacts
will close, and the normally
closed contacts will open.
The relay will de-energize
during over or undervoltage conditions. Reset is
automatic when the voltage
returns to normal.
2
3/
3
4
1/
2
11/64" DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Type:
WOUV - Over/Undervoltage
Line Voltage VDC
12DC
125DC
18DC
240DC
24DC
250DC
28DC
305DC
32DC
405DC
48DC
430DC
60DC
470DC
120DC
560DC
Options:
Blank - Standard
A = 2 Form A Contacts
B = 2 Form B Contacts
H = 125 VDC Contacts
P = Transient Protection
WOUV -12DC
-A
160
Percent of Nominal Voltage
Sample Part Number
Drop-Out Time Delay WOUV...DC Series
180
140
120
100
80
60
40
20
0
0
20
40
60
80
Time Delay (msec)
100
120
140
Transient Protection — All voltage
relays will withstand momentary voltage
surges of twice the nominal rated input
voltage (standard).
Option “P” provides additional transient protection which complies with the
requirements of ANSI/IEEE C37.90-1978
Consult factory for additional
models.
PAGE 15
11
Protective Relays
Notes:
1. R
emove black screws for access
to the O/V and U/V trip adjustment.
2. C
lockwise rotation of the adjustment potentiometer will raise the
voltage trip point.
3. T
he adjustments are by means of
a single turn potentiometer. Use
a small screwdriver and do not
force beyond the limit stops.
Single Phase
Ordering Information
Nominal Voltage (±10%) —
12 VDC to 560 VDC
Drop-out Point (u/v models) —
70-100% of nominal voltage,
screwdriver adjustable
Pick-Up Point (o/v models) —
100-125% of nominal voltage,
screwdriver adjustable
Output Contacts — One set N.O.,
One set N.C.
Contact Ratings —
5 amp resistive at 120 VAC or 28 VDC
Operating Temperature Range —
-40˚C to +75˚C
Temperature Effects —
Less than 1% voltage drift over the temperature range.
Power Consumption —
12 to 60 VDC models — 1 W max.
120 to 305 VDC models — 2 W max.
405 to 470 VDC models — 3 W max.
560 VDC Model — 4 W max.
Time Delay — A short duration delay
is provided to prevent nuisance tripping
due to momentary dips or surges in
voltage. The drop-out delay, following a
voltage fault is 75 to 100 milliseconds
Protective Relays
WOUVT Series, Over/Undervoltage
Product Facts
n Function
Product Specifications
27/59
n ANSI/IEEE
C37.90-1978
Voltage sensitive relays are
available for both AC and
DC applications for overvoltage and undervoltage
protection. Combination
over/undervoltage relays
provide band-pass capabilities. AC relays are either
single or three-phase type.
Three phase relays are
designed to sense the average of the three phases.
Voltage trip points are
screwdriver adjustable, and
operation is time-delayed
so that momentary voltage
transients will not cause
nuisance tripping.
Operation
The relay will energize at
normal voltage condition.
The normally closed contact
(Form B) will open and the
normally open (Form A) will
close. The relay will de-energize after time delay when
over or undervoltage condition is reached.
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Single Phase Models
Three Phase Models
Nominal Voltage — 120 VAC to
575 VAC
Phase — Single or Three
Line Frequency — 50-400 Hz
Type of Sensing — Average of all
three phases
Undervoltage Trip — 70-100% of
nominal voltage, screwdriver adjustable
Overvoltage Trip — 100-125% of
nominal voltage, screwdriver adjustable
Drop-out Time Delay — 0.5 to 20
seconds, screwdriver adjustable
Pick-up to Drop-out Differential —
2% maximum
Output Contacts — One set N.O.,
One set N.C.
Contact Ratings — 5 amp resistive at
120 VAC or 28 VDC
Operating Temperature Range —
-40˚C to +70˚C
Power Consumption —
4 VA maximum
Notes:
1. R
emove black screw for access
to the voltage trip and time delay
adjustment potentiometer.
2. C
lockwise rotation of the voltage
adjustment potentiometer will
raise the voltage trip point.
3. C
lockwise rotation of the time
adjustment potentiometer will
increase the drop-out time delay.
Ordering Information
Sample Part Number
WOUVT -1 -120AC
Type:
WOUVT - Over/Undervoltage
No. Phases
1 = Single
3 = Three (line to line)
Line Voltage VAC
115
120
200
208
220
230
240
380
Options:
Blank - Standard
A = 2 Form A Contacts
B = 2 Form B Contacts
H = 125 VDC Contacts
P = Transient Protection
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
Option “H” provides for contacts rating
of 3 amps @ 125VDC.
Option “P” provides additional transient protection which complies with the
requirements of ANSI/IEEE C37.90-1978
Consult factory for additional
models.
Protective Relays
250 Series, Over/Undervoltage
Product Facts
n Function
27/59
n ANSI/IEEE
C37.90-1978
3
3
B .C
7 /8
.
A transistorized circuit
provides a sharp and
accurate response at the
preset tripping voltage; unaffected by temperature or
frequency variations.
2
00
Models are available for
single phase or three phase
applications, and are
suitable for either 50 Hz,
60 Hz, or 400 Hz operation.
The trip point is adjustable.
6 -32 STUDS (6)
3 .5
The 250 series relays
provide combined
Overvoltage and
Undervoltage protection in a
single compact unit.
Product Specifications
2 .7
.
B .C
50
0
0
3 .5
13 / 64 " DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Nominal Voltage — See Ordering
Information
Undervoltage Trip — 70-100% of
nominal voltage, screwdriver adjustable
Overvoltage Trip — 100-125% of
nominal voltage, screwdriver adjustable
Pick-up to Drop-out Differential —
3% maximum
Contact Ratings — 5 amp resistive at
120 VAC or 28 VDC
Contact Form — One set N.O.,
one set N.C.
Operating Temperature Range —
-20˚C to +85˚C
Notes:
1. R
emove screws for access the
overvoltage or undervoltage trip
adjustments. Clockwise rotation
of the adjustment potentiometer
will raise the trip point.
Contact Arrangements
Single Phase
Three Phase
Ordering Information
Sample Part Number
250X
Model: L-L Volts
250X = 120 VAC, 1 Phase, 50-400 Hz
251X = 120/208 VAC, 3 Phase, 4 Wire, 50-400 Hz
252X = 115 VAC, 3 Phase, 3 Wire, 50-400 Hz
253X* = 230 VAC, 3 Phase, 3 Wire, 50-400 Hz
254X* = 380 VAC, 3 Phase, 3 Wire, 50-400 Hz
255X*= 460 VAC, 3 Phase, 3 Wire, 50-400 Hz
256X* = 575 VAC, 3 Phase, 3 Wire, 50-400 Hz
Mounting
Blank = Stud
X = Flange
* Enclosure height is 3.835”
Consult factory for additional
models.
PAGE 17
11
Protective Relays
NC — Open at nominal voltage. Closed
at Overvoltage and Undervoltage
NO — Closed at nominal voltage. Open
at Overvoltage and Undervoltage
Protective Relays
D100X Series, Close Differential
Product Facts
n ANSI/IEEE
n UL
Product Specifications
C37.90-1978
File No. E58048
n CSA
File No. LR61158
R
R
Close Differential Relays
are voltage sensitive. The
pick-up and drop-out voltage
settings are independently
adjustable, which allows
precise setting of the differential voltage. This relay is
available in a wide range of
AC and DC voltages. Their
primary application is the
sensing and control of transfer switches.
Operation
Monitors a single phase
AC signal, and is used for
undervoltage detection.
Has separate pick-up and
drop-out voltage settings,
providing an adjustable hysteresis.
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Nominal Voltage — AC, Single
Phase, see Ordering Information
Nominal Frequency — 50 to 400 Hz.
Pick-Up Adjustment Range —
67-100% of nominal voltage
Drop-Out Adjustment Range —
67-100% of nominal voltage
Maximum Differential Setting —
33% of nominal voltage
Minimum Differential Setting —
2% of nominal voltage
Output Contacts — Form C (SPDT)
Contact Ratings — 5 Amp resistive at
120 VAC or 28 VDC
Operating Temperature Range —
-20˚C to +85˚C
Expected Life — 10 million operations
Inverse Time Drop-Out —
The differential relay contains a time
delay before operation so that momentary voltage transients do not affect the
operation of the relay. The time delay
has an inverse time characteristic so that
excessive voltage conditions will cause
a more rapid drop-out. This time delay
is approximately 200mSec. (12 cycles)
at the trip settings and decreases to 30
mSec. at approximately 15% beyond the
trip settings.
Notes:
1. R
emove black nylon protective
screws to gain access to the two
internal adjustment potentiometers.
2. C
lockwise rotation of the pick-up
and drop-out adjustment will raise
the voltage trip point.
3. T
he relay contacts are shown in
the de-energized state.
Ordering Information
Sample Part Number
D100X
Model: L-L Volts
D100X = 120 VAC
D100-6X = 120 VAC, Spike Suppression
D100-3X = 208 VAC
D100-4X = 240 VAC
D100-8X = 277 VAC
D100-5X = 480 VAC
D100-7X = 510 VAC
Surge Withstand Capability is in
compliance with the requirements of
ANSI/IEEE C37.90B
Consult factory for additional
models.
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
Height
2”
2”
3.125”
3.125”
3.125”
3.125”
3.125”
Protective Relays
D101X Series, 3 Phase Adjustable, Close Differential
Product Facts
n ANSI/IEEE
n UL
Product Specifications
#6 - 32 STUDS
10 PLACES
C37.90-1978
File No. E58048
n CSA
File No. LR61158
R
R
H2
H1
1 /4
Notes:
1. R
emove screws for access to
pick-up and drop-out trip adjustments.
2. C
lockwise rotation of the pick-up
and drop-out adjustment will raise
the voltage trip point.
1 /2
0
5
5 .
0
4 . 0
5 .
13 / 64 " DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Ordering Information
Sample Part Number
D101X
Model: L-L Volts
D101X = 120 VAC
D101-6X = 208 VAC
D101-4X = 240 VAC
D101-10X = 380 VAC
D101-7X = 480 VAC
Model
D101X
D101-4X
D101-6X
D101-7X
D101-10X
Power Consumption
Each Phase
2 VA max.
3 VA max.
3 VA max.
4 VA max.
4 VA max.
H1
(inches)
2
3 1/2
3 1/2
3 1/2
3 1/2
H2
(inches)
2 11/16
4 3/16
4 3/16
4 3/16
4 3/16
11
Protective Relays
Operation
The output contacts will
close when the voltage of
all three phases is above
the pre-set pick-up point,
and will open when any
one phase drops below its
drop-out setting.
4
Close Differential Relays
are voltage sensitive. The
pick-up and drop-out voltage
settings are independently
adjustable, which allows
precise setting of the differential voltage. This relay is
available in a wide range of
AC voltages. Their primary
application is the sensing
and control of transfer
switches.
Nominal Voltage — AC, Three Phase,
see Ordering Information
Nominal Frequency — 50 to 500 Hz.
Pick-Up Adjustment Range —
66-100% of nominal voltage, screwdriver adjustable
Drop-Out Adjustment Range —
66-100% of nominal voltage, screwdriver adjustable
Output Contacts — SPNO
Contact Ratings — 5 amp resistive at
120 VAC or 28 VDC
Operating Temperature Range —
-20˚C to +85˚C
Consult factory for additional
models.
PAGE 19
Protective Relays
700 Series w/ Adjustable Time Delay
Product Facts
n Function
32
n ANSI/IEEE
n UL
Product Specifications
TERMINAL STRIPS
#6 - 32 SCREWS
C37.90-1978
File No. E58048
n CSA
File No. LR61158
R
R
3 .0
4 .0
1 2
4 /
7 8
4 /
Several types of Reverse
Power Relays are available
including relays sensitive
to reverse reactive power
(kVAR). KILOVAC is the
leading brand of reverse
power relays. Our rugged
sealed construction
provides continuous
and reliable operation
unaffected by shock,
vibration or other severe
environments. Reverse
Power Relays are used for
the protection of generator
sets operating in parallel.
7 8
3 /
5 8
4 /
11 / 64" DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Model 710TD
Model 720TD (X) thru 724TD (X)
Designed for 120, 220 or 266 volt
line to neutral connection
For operation on three phase,
three wire
Ordering Information
Sample Part Number
Line Voltage —
Model 710TD — 120 V, 220 V or 266 V,
line to neutral
Model 730TD — 120 V, 230 V, 380 V,
460 V, L-L, 3 Phase or 120 V, Single
Phase, L-N
All models for three phase, three wire
sensing are available, see Ordering
Information
Line Frequency — 50-500 Hz.
Current Requirements —
0 to 5 amp max direct or from CT with
5 amp secondary
Trip Adjustment —
Screwdriver adjustable 4% to 20% (of
the 5 amp rating)
Time Delay Adjustment — 0.5 to 20
seconds, screwdriver adjustable
Output Contacts — One set N.O., one
set N.C.
Contact Ratings — 5 amp resistive at
120 AC or 28 Vdc
Power Consumption —
Voltage circuit — 2 VA max.
Current circuit — 4 VA max.
Weight — 2.75 lbs. max.
Notes:
1. R
emove screw for access to the
pick-up and time delay adjustments.
2. C
lockwise rotation of the pick-up
adjustment will raise the reverse
trip point.
3. C
lockwise rotation of the time
adjustment will increase the time
delay.
4. P
olarity of the voltage and the
current connections must be
observed for true power sensing.
5. Interchanging connections on
terminals 5 and 6, will cause the
output contacts to pick-up on
forward power and dropout on
no power or reverse power.
720TDX
Type:
710TD = 120V, 220V, 266V line to neutral
720TD = 120V, L-L, 3 Phase
721TD = 230V, L-L, 3 Phase
722TD = 380V, L-L, 3 Phase
723TD = 460V, L-L, 3 Phase
724TD = 575V, L-L, 3 Phase
725TD = 416V, L-L, 3 Phase
730TD = 120 V, 230 V, 380 V, 460 V, L-L, 3 Phase or
120 V, Single Phase, L-N
Mounting:
X = Flange
Blank - Stud
Options:
7 = Reverse Inductive, 60 Hz
Consult factory for additional
models.
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
Protective Relays
1000 Series
Product Facts
n Function
47
n ANSI/IEEE
n UL
TERMINAL STRIPS
#6 - 32 SCREWS
C37.90-1978
File No. E58048
n CSA
File No. LR61158
R
R
Phase failure relays protect
motors, equipment and
personnel from damage
or injury caused by open
phase, reversed phase
sequence, or low voltage
in a three phase system.
Models are available for 50
and 60 Hz with voltages up
to 575 volts. Motor control
switchboards are a common
application.
2
Nominal Voltage — See Ordering
Information
Voltage Drop-Out — 75% to 100% of
nominal, screwdriver adjustable
Pick-Up to Drop-Out Differential —
3% approx.
Ambient Operating Temperature
— -40°C to +70°C
Temperature Drift — ± 1%
Time Delay — See Curve
Output Contacts — One set, normally
open
Contact Ratings —
10 amp at 28 VDC resistive
10 amp at 230 VAC resistive
Notes:
1. R
emove screw for access to the
undervoltage adjustment.
2. C
lockwise rotation of the adjustment potentiometer will raise the
drop-out voltage.
3/4
1/2
3
11/64" DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
100
Drop Out Time Delay
90
80
70
60
50
40
30
20
10
0
0
1
2
3
Nominal Voltage
Ordering Information
Sample Part Number
1004X
Type:
1001 = 120 V, 60 Hz, 3 phase,L-L
1007 = 208 V, 60 Hz, 3 phase, L-L
1002 = 230 V, 60 Hz, 3 phase,L-L
1012 = 300 V, 60 Hz, 3 phase, L-L
1013 = 350 V, 60 Hz, 3 phase, L-L
1003 = 380 V, 50 Hz, 3 phase, L-L
1004 = 460 V, 60 Hz, 3 phase,L-L
1005 = 525 V, 60 Hz, 3 phase,L-L
1006 = 575 V, 60 Hz, 3 Phase, L-L
Mounting:
X = Flange
Blank - Stud
11
Protective Relays
The relay contacts will
remain in their normally
open position (de-energized) when voltage with
incorrect phase sequence is
applied, one or more phases
are open, or at undervoltage
condition.
3.0
1 /2
3 /8
7
3
Operation
The contacts of the relay will
close only when it senses
normal conditions of three
phase power at the proper
phase sequence.
3 13/16
Product Specifications
Consult factory for additional
models.
PAGE 21
Protective Relays
900 Series
Product Facts
n Function
Product Specifications
Input Voltage — See Ordering
Information
Output Contacts — SPDT
Contact Ratings —
5 amp resistive at 120 Vac or 28 Vdc
47
Phase sequence relays
are designed to monitor
the correct phase rotation
of a three phase system.
Several models are available from 50 Hz, 60 Hz, and
400 Hz with voltages up to
575 volts. High shock relay
output and reverse contacts
are also available.
2 3/4
1
3 /4
6
5 /1
2
Operation
The relay remains de-energized when voltage in the
proper phase sequence (A,
B, C) is applied, the relay is
energized when voltage with
incorrect sequence (A, C, B)
is applied.
3 5/32
2
1/8
6
11/1
2
6 - 32 x 3/8 studs
4 places
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Ordering Information
Sample Part Number
901X
Type:
900-3X = 120 VAC, 60 Hz, 3 phase,L-L
910X = 190-520 VAC, 60 Hz, 3 Phase, L-L
900-2X = 208-230, 50/60 Hz, 3 Phase
900X = 230 VAC, 60 Hz, 3 phase, L-L
901X = 460 VAC, 60 Hz, 3 phase,L-L
Mounting:
X = Flange
Blank - Stud
Consult factory for additional
models.
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
Protective Relays
WCB Series
Product Facts
n Function
60 or 87
n ANSI/IEEE
n UL
Product Specifications
C37.90-1978
File No. E58048
n CSA
File No. LR61158
R
R
Current Balance Relays
are designed to sense
unbalanced current flow
in a three phase system.
The primary application of
Current Balance Relays is to
protect three phase motors
against phase unbalance or
phase failure.
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Notes:
1. R
emove black screw for access to
the trip adjustment.
2. C
lockwise rotation of the adjustment potentiometer will raise the
unbalance trip point.
3. T
he output contacts are shown
de-energized.
Ordering Information
Sample Part Number
WCB -120AC -1 -A
Type:
WCB = Current Balance
Control Voltage (± 15%)
26 DC
48 DC
125 AC
120 AC
230 AC
380 AC
460 AC
Trip Adjustment Range
.5 = 0.1 amp to 0.5 amps
1 = 0.2 amp to 1 amp
2 = 0.4 amp to 2 amp
Options:
A = two normally open contacts
B = two normally closed contacts
PAGE 23
11
Protective Relays
Operation
With control voltage applied
to the relay, the output
contacts will energize when
the three phase currents
are balanced (including
zero currents), and will be
de-energize by unbalance
currents.
Line Current — Three Phase,
AC current, 50-400 Hz Direct or from
CT.
5 amp continuously
20 amp, 30 sec.
200 amp, 0.10 sec.
Control Voltage — See Ordering
Information
Unbalanced Trip Point —
Screwdriver adjustable. Adjustment
range in accordance with ordering
information. (The unbalanced value is
defined as the difference between the
highest and the lowest phase current).
Drop-Out Time Delay —
0.9 to 1.3 seconds
Surge Withstand Capability —
In compliance with C37.90B ANSI/IEEE
Operating Temperature —
-40°C to +70°C
Burden —
Current input — 5.0 VA,
Phase Control voltage — 3.0 VA
Contact Ratings —
One set, N.O., One set N.C.
5 amp resistive at 120 VAC or 28 VDC
Protective Relays
WC1 & WCT1 Series, Overcurrent
Product Facts
n Function
50/51
n ANSI/IEEE
n UL
TERMINAL STRIPS
#6 - 32 SCREWS
C37.90-1978
File No. E58048
n CSA
File No. LR61158
R
R
Current sensitive relays
are available for single and
three phase applications.
Voltage controlled overcurrent relays protect generators against fault currents
below the full rated value,
when the fault produces a
voltage drop as in the case
of short circuits or grounds.
Phase balance relays are
available to sense and
control unbalanced current
flow in three phase systems. Current differential
relays operate when the
differential between two
currents exceeds preset
values. Over/under current
phase-band relays are also
available.
31
3 7 /2
/8
3.0
23
3 1 /4
/2
See next page for
WCT Can Dimensions
11 /64" DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Time Delay
Standard Time Delay
(WC1 Series) — A fixed inverse time
delay is incorporated in all overcurrent
relays and is represented by the typical
curves shown.
Adjustable Time Delay
(WCT1 Series) — The time delay is
field adjustable. The standard time delay
can be increased by any value between
0.5 and 20 seconds.
Ordering Information
Line Current — Single Phase,
AC current, 50-400 Hz Direct or from CT
Control Voltage — See Ordering
Information
Trip Point — Screwdriver adjustable.
Adjustment range in accordance with
ordering information.
Pick-Up to Drop-Out Differential —
Approximately 0.1 amp.
Overcurrent Allowance —
Maximum of 500% for 0.25 seconds
Surge Withstand Capability —
In compliance with C37.90B ANSI/IEEE
Operating Temperature —
-40°C to +70°C
Temperature Drift — ± .05%
Burden —
Current input — 1.2 VA,
Control voltage — 2.5 VA
Contact Ratings —
One set, N.O., One set N.C.
5 amp resistive at 120 VAC or 28 VDC
Notes:
1. R
emove black screws for access
to the current pick-up and the time
delay adjustment.
2. C
lockwise rotation of the pick-up
adjustment will raise the current
trip point.
3. C
lockwise rotation of the time
delay adjustment, (Type WCT1
only) will increase the time delay.
Typical Curves (WC1 Series)
WCT1 -48DC -5 -B
Type:
WC1 = Per Time Curves
WCT1 = Adjustable Time Delay
Control Voltage (± 15%)
26 DC
48 DC
125 AC
120 AC
230 AC
380 AC
460 AC
8
6
Current (amps)
Sample Part Number
Product Specifications
4
2
0
0
0.1
0.2
Pick-Up Time Delay
0.3
0.4
Trip Adjustment Range
1 = .2 amp - 1 amp
5 = 1 amp to 5 amp
10 = 2 amp to 10 amp
Other Options
A = Two normally open contacts
B = Two normally closed contacts
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
See next page for 3-phase types
and consult factory for additional
models.
Protective Relays
WC3 & WCT3 Series, Overcurrent
Product Facts
n Function
50/51
n ANSI/IEEE
n UL
Product Specifications
TERMINAL STRIPS
#6 - 32 SCREWS
C37.90-1978
File No. E58048
n CSA
File No. LR61158
R
R
4.0
3.0
4.0
1 /2
4 7 /8
4
3
21 /
32
See previous page for
WC Can Dimensions
11/ 64 " DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Time Delay
Standard Time Delay
(WC3 Series) — A fixed inverse time
delay is incorporated in all overcurrent
relays and is represented by the typical
curves shown.
Adjustable Time Delay
(WCT3 Series) — The time delay is
field adjustable. The standard time delay
can be increased by any value between
0.5 and 20 seconds.
Ordering Information
Notes:
1. R
emove black screws for access
to the current pick-up and the time
delay adjustment.
2. C
lockwise rotation of the pick-up
adjustment will raise the current
trip point.
3. C
lockwise rotation of the time
delay adjustment, (Type WCT3
only) will increase the time delay.
Typical Curves (WC3 Series)
Type:
WC3 = Per Time Curves
WCT3 = Adjustable Time Delay
Control Voltage (± 15%)
26 DC
48 DC
125 DC
120 AC
230 AC
380 AC
460 AC
WCT3 -48DC -5 A
8
6
Current (amps)
Sample Part Number
7 /8
4
4
2
0
0
0.1
0.2
Pick-Up Time Delay
0.3
0.4
Trip Adjustment Range
1 = .2 amp - 1 amp
5 = 1 amp to 5 amp
10 = 2 amp to 10 amp
Other Options
A = Two normally open contacts
B = Two normally closed contacts
See previous page for 1-phase
models and consult factory for
additional models.
PAGE 25
11
Protective Relays
Current sensitive relays
are available for single and
three phase applications.
Voltage controlled overcurrent relays protect generators against fault currents
below the full rated value,
when the fault produces a
voltage drop as in the case
of short circuits or grounds.
Phase balance relays are
available to sense and
control unbalanced current
flow in three phase systems.
Current differential relays
operate when the differential between two currents
exceeds preset values.
Over/under current
phase-band relays are
also available.
Line Current — Three Phase,
AC current, 50-400 Hz Direct or from CT
Control Voltage — See Ordering
Information
Trip Point — Screwdriver adjustable.
Adjustment range in accordance with
ordering information.
Pick-Up to Drop-Out Differential —
Approximately 0.1 amp
Overcurrent Allowance — Maximum
of 500% for 0.25 seconds
Surge Withstand Capability —
In compliance with the requirements of
ANSI/IEEE
Operating Temperature —
-40°C to +70°C
Temperature Drift — ± 0.05%/°C
Burden —
Current input — 1.2 VA,
Control voltage — 2.5 VA
Contact Ratings —
One set, N.O., One set N.C.
5 amp resistive at 120 VAC or 28VDC
Protective Relays
WCD Series
Product Facts
n Function
TERMINAL STRIPS
#6 - 32 SCREWS
87
n ANSI/IEEE
C37.90-1978
3
4
4
4
1 /2
7 /8
Current Differential Relays
are used for the protection
of transformers, motors and
generators, by comparing
the magnitude of the current
entering and leaving the
protected circuit. On a given
phase winding, any difference
between the two currents
will indicate an internal fault;
the relay will sense the vectorial difference between the
two currents of the protected
section and will initiate a
quick disconnection of the
unit, to prevent disastrous
consequences.
3
7 /8
4
5 /8
Line Current —
Single Phase, AC current, 50-400 Hz
Direct or from CT
5 amp continuously
20 amp 30 seconds
200 amp, 0.10 seconds
Control Voltage — See Ordering
Information
Differential Trip Point —
Screwdriver adjustable. See Ordering
Information
Operating Temperature —
-40°C to +75°C
Burden —
Current input — 2.5 VA max.
Control voltage D
C — 2 W max.
AC — 2 VA max.
Output Contacts —
One set, N.O., One set N.C.
Contact Ratings —
5 amp resistive at 120 VAC or 28 VDC
.172 DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
The relay may also be used
to protect internal faults
on transformers, such as:
ground faults, shorted
winding, leakage between
primary and secondary, etc.
It will sense and compare
primary vs. secondary
currents, once the turns
ratio has been taken into
consideration.
Operation
With control voltage applied,
the output contacts (shown
in the de-energized position)
will remain de-energized
as long as the difference
between the two input currents remains below the preset trip value. The contact
will transfer to the energized
position when the current
difference exceeds the trip
value.
Product Specifications
Notes:
1. R
emove black screws for access
to the trip adjustments.
2. C
lockwise rotation of the adjustment potentiometer will raise the
current differential trip point.
3. T
he output contacts are shown
de-energized.
Ordering Information
Sample Part Number
WCD -230AC -1 -A
Type:
WCD - Close Differential
Control Voltage
120AC
25DC
208AC
48DC
230AC
125DC
380AC
416AC
460AC
525AC
575AC
Trip Adjustment Range
.5 = 0.1 amp to 0.5 amp
1 = 0.2 amp to 1 amp
2 = 0.4 amp to 2 amp
Options:
A = Two normally open contacts
B = Two normally closed contacts
H = Contacts rated 3 amp at 125 VDC
P = Transient protection is provided in compliance with
ANSI/IEEE C37.90-1978
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
Consult factory for additional
models.
Protective Relays
1800 Series
Product Facts
n Function
25
n ANSI/IEEE
n UL
Product Specifications
#6 - 32 STUDS
6 PLACES
C37.90-1978
File No. E58048
n CSA
File No. LR61158
R
R
Output Contact Options —
1. Two Form A. (Add -A to Model
Number)
2. Two Form B. (Add -B to Model
Number)
Consult factory for additional
models.
7 /8
3 5 /8
4
11
11 /64" DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
A. 3 Phase, 4 Wire System
Connect phase “A” of LINE 1 to terminal 1
Connect phase “A” of LINE 2 to terminal 3
Connect the neutrals to terminals 2 & 4
B. 3 Phase, 3 Wire or 1 Phase, 2 Wire System
Connect phase “A” of LINE 1 to terminal 1
Connect phase “B” of LINE 1 to terminal 2
Connect phase “A” of LINE 2 to terminal 3
Connect phase “B” of LINE 2 to terminal 4
Selection Guide (Typical Applications)
Sensing
Voltage
120 Volts
230 Volts
380 Volts
460 Volts
575 Volts
415 Volts
277 Volts
Series 1800*
Generator to Generator
1810X
1820X
1830X
1840X
1850X
1860X
1870X
Series 1800DB**
Generator to Bus
1810DBX
1820DBX
1830DBX
1840DBX
1850DBX
1860DBX
1870DBX
Series 1800DDB***
Bus to Bus
1810DDBX
1820DDBX
1830DDBX
1840DDBX
1850DDBX
1860DDBX
1870DDBX
Series 1800
Series 1800DB Series 1800DDB
Condition
Contacts
Contacts
Contacts
Energized Not Synch. N.C. N.O. N.C. N.O. N.C. N.O.
Energized
Line 1
X
1
Open Close Open Close Open Close
Line 2
X
Yes
Line 1
X
No
2
Close Open Close Open Close Open
Line 2
X
No
Line 1
X
3
Close Open Open Close Open Close
Line 2
X
Line 1 X
4
Close Open Close Open Close Open
Line 2
X
Line 1 X
5
Close Open Close Open Open Close
Line 2
X
PAGE 27
Protective Relays
Notes
*Permits paralleling of two generators only when they are “on-line”
and their voltages are equal and
in phase (synchronized)
**Normally used to permit paralleling of a generator to a bus when:
(a) both line voltages are equal
and in phase, or: (b) when the
generator is “on-line” and the bus
is “dead”
***Permits paralleling of two power
lines (buses) when: (a) both line
voltages are equal and in phase,
or: (b) when either bus is “hot”
and the other bus is “dead”
3
4
1 /2
4
7 /8
4
Application
These relays are designed
for automatic paralleling
(synchronizing) of generators. The relays sense the
phase angle displacement
and the amplitude difference
between two voltages and
permit paralleling only when
both voltages are equal
and in phase. A short time
delay is provided to assure
that the frequencies are
essentially the same at the
moment of paralleling. The
basic series is designed to
parallel two or more
energized AC generators.
The “Dead Bus” type
provides paralleling of AC
generators to the main
bus. They permit electrical
connection of an energized
generator to an un-energized
line (Dead Bus). If the bus
is energized, connection of
the generator to the bus is
permitted only when both
are synchronized.
Sensing Voltage — 120 V, 230 V,
277 V, 380 V, 460 V, 575 V, & 415 V
Line Frequency — 50-500 Hz
Pick-Up Adjustment —
External adjustment for field sensing
of 10-30% of nominal input voltage.
(Vertical voltage differential of 6 to 18
electrical degrees).
Time Delay — Fixed @ 60 milliseconds is provided to assure that the
frequencies of both input lines are sufficiently close to permit paralleling within
the preset window.
Output Contacts —
One set N.O., one set N.C.
5 amp resistive at 120 VAC or 28 VDC
Protective Relays
WOF & WUF Series
Product Facts
n Function
81 O/U
n ANSI/IEEE
n UL
Product Specifications
C37.90-1978
File No. E58048
n CSA
File No. LR61158
R
R
2 1/2
5 /8
3
1 /8
4 2
1/
4
3 /
1 4
4 /
1 2
11/ 64 " DIA.
4 HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Typical Curves (WOF Series)
Typical Curves (WUF Series)
90
60
Overfrequency Relay
Model WOF-12-6070
85
58 Hz. Setting
55
80
Frequency (Hz)
Frequency (Hz)
Application
The output contacts of
frequency relays are energized when the frequency
exceeds the adjustable
set point. Overfrequency
and underfrequency relays
are available in 50, 60 and
400Hz. Combination over/
underfrequency “band
pass” relays are also available. These are energized
at rated frequency and
de-energized during overfrequency or underfrequency
conditions. Frequency
Differential relays are
energized above the preset
frequency. The pick-up and
drop-out frequency settings
are independently adjustable.
Nominal Voltage (±20%) —
120, 230, 380 and 460 volts
Nominal Frequencies —
50, 60 and 400 Hz.
Trip Point — Screwdriver adjustable.
Adjustment range in accordance with
ordering information.
Operating Temperature —
-20°C to +65°C
Differential — The frequency pitch-up
to drop-out differential is .5% max
Voltage Drift — ± .05% maximum
frequency error for input voltage
variation of ±10%
Time Delay — See Time versus
Frequency curves
Surge Withstand Capability —
In compliance with C37.90B ANSI/IEEE
Output Contacts — One set N.O., one
set N.C.
Contact Ratings —
5 amp resistive at 120 VAC or 28VDC
75
70 Hz. Setting
70
65 Hz. Setting
65
3
2
4
5
40
30
60
1
50 Hz. Setting
45
Underfrequency Relay
Model WUF-12-5060
35
62 Hz. Setting
0
55 Hz. Setting
50
0
1
6
2
3
4
5
6
Drop-Out Time Delay (sec)
Pick-Up Time Delay (sec)
Ordering Information
Sample Part Number
Time Delay
WUF -12 -5060 -T
Type:
WUF = Underfrequency
WOF = Overfrequency
Input Voltage (VAC)
12 = 120
23 = 230
38 = 380
46 = 460
Frequency Range
4050 = 40-50 HZ
5060 = 50-60 HZ
6070 = 60-70 HZ
3540 = 350-400 HZ
4045 = 400-450 HZ (overfrequency only)
Consult factory for additional
models.
Time Delay Options
blank = Per Time Curve
T = Adjustable
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
Standard Time Delay — A minimum,
fixed inverse time delay is incorporated
in all frequency relays to prevent
nuisance tripping and is represented by
the typical curves shown above.
Adjustable Time Delay —
If additional time delay is required, a
suffix “T” must be added to the part
number. This allows the minimum fixed
time delay to be field-adjustable up to
20 seconds.
Notes:
1. R
emove black screws for access
to the frequency and the time
adjustments.
2. C
lockwise rotation of the
frequency potentiometer will
raise the frequency trip point.
3. C
lockwise rotation of the
time adjustment, option “T”
will increase the time for
overfrequency relays and dropout
time for underfrequency relays.
Protective Relays
WOUF Series, Over/Underfrequency
Product Facts
81 O/U
n ANSI/IEEE
n UL
C37.90-1978
S
TRIP
S
AL S
MIN SCREW
R
E
T
32
#6 -
File No. E58048
n CSA
File No. LR61158
R
R
3
3
4
1 /2
1 /8
5 /8
4
3
1 /2
1 /4
4
11 / 64 " DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Operation
The relay will energize at
normal frequency; The
normally closed contacts will
open and the normally open
contacts will close. The
relay will drop-out after time
delay at overfrequency or
underfrequency.
Time Delay
Ordering Information
Sample Part Number
WOUF -12 -5060 -T
Type:
WOUF = Over/Underfrequency
Input Voltage (VAC)
12 = 120
23 = 230
38 = 380
46 = 460
Frequency Range
UF Adj.
50 =
40-50 Hz
60 =
50-60 Hz
400 = 350-400 Hz
Time Delay Options
blank = Per Time Curve
T = Adjustable
Consult factory for additional
models.
11
Notes:
1. R
emove black screws for access
to the frequency and the time
adjustments.
2. C
lockwise rotation of the
frequency potentiometer will
raise the frequency trip point.
3. C
lockwise rotation of the time
adjustment, option “T” will
increase the drop-out time delay.
Protective Relays
The output contacts of
frequency relays are energized when the frequency
exceeds the adjustable
set point. Overfrequency
and underfrequency relays
are available in 50, 60 and
400Hz. Combination over/
underfrequency “band
pass” relays are also available. These are energized
at rated frequency and
de-energized during overfrequency or underfrequency
conditions. Frequency
Differential relays are
energized above the preset
frequency. The pick-up and
drop-out frequency settings
are independently adjustable.
Nominal Voltage (±20%) —
120, 230, 380 and 460 volts
Nominal Frequencies —
50, 60 and 400 Hz.
Trip Point — Screwdriver adjustable.
Adjustment range in accordance with
ordering information.
Operating Temperature —
-40°C to +65°C
Differential — The frequency pick-up
to drop-out differential is .5% max
Voltage Drift — ± 0.05% maximum
frequency error for input voltage variation of ±10%
Time Delay — See Time versus
Frequency curves
Surge Withstand Capability —
In compliance with C37-90B ANSI/IEEE
Output Contacts — One set N.O., one
set N.C.
Contact Ratings —
5 amp resistive at 120 VAC or 28 VDC
Standard Time Delay — A minimum,
fixed inverse time delay is incorporated
in all frequency relays to prevent
nuisance tripping and is represented by
the typical curves shown below.
Adjustable Time Delay —
If additional time delay is required, a
suffix “T” must be added to the part
number. This allows the minimum fixed
time delay to be field-adjustable up to
20 seconds.
Typical Curves (WOUF Series)
90
80
70
OF Adj.
50-60 Hz
60-70 Hz
400-450 Hz
Frequency
n Function
Product Specifications
60
50
40
30
0
1
2
3
4
Drop-Out Time Delay
5
6
PAGE 29
Protective Relays
20-000 Series
Product Facts
n Function
Product Specifications
#6 - 32 STUDS
6 PLACES
81 O
R
Operation
The normally open contacts
close, and the normally
closed contacts open, at
all frequencies above the
set point. The contacts in
the connection diagram, are
shown in the de-energized
position (below the trip set
point).
4 1/2
3 13/16
3.0
1 /2
3
7 /8
3
The output contacts of
frequency relays are energized when the frequency
exceeds the adjustable
set point. Overfrequency
and underfrequency relays
are available in 50, 60 and
400Hz. Combination over/
underfrequency “band pass”
relays are also available.
These are energized at
rated frequency and
de-energized during
overfrequency or underfrequency conditions.
Frequency Differential
relays are energized
between the preset
frequencies. The pick-up
and drop-out frequency
settings are independently
adjustable.
2
3/4
1/2
3
Input Voltage (±10%) —
120 VAC, Single Phase
Frequencies Range (adjustable) —
See Ordering Information
Differential — Frequency pick-up to
drop-out differential is 1% max
Temperature Range —
-40°C to +85°C
Temperature Drift — ± 1% frequency
error over temperature range
Voltage Error — ± 1% for input
voltage of 120 VAC ± 10%
Contact Ratings — 5 amp resistive at
120 VAC or 28 VDC
Output Contacts —
One set N.O., one set N.C.
Notes:
1. R
emove screw for access to trip
adjustment.
11/64" DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
120VAC
Ordering Information
Sample Part Number
20 -050 X
Type:
20 - Frequency
Frequency Range
040 = 40-50 Hz
050 = 50-60 Hz
060 = 60-70 Hz
350 = 350-500 Hz
400 = 400-450 Hz
Mounting Options
X = Flange
blank = Stud
Consult factory for additional
models.
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
Protective Relays
25-000 Series
Product Facts
n Function
Product Specifications
81 O/U
n ANSI/IEEE
#6 - 32 STUDS
6 PLACES
C37.90-1978
3 13/16
3.0
37
Notes:
1. T
he contacts are shown in the
de-energized position.
2. R
emove screws for access to
the underfrequency and
overfrequency trip adjustments.
3. C
lockwise rotation of the
adjustment potentiometer will
raise the frequency trip points.
1 /2
/8
2
3 /4
1 /2
3
11 / 64 " DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Ordering Information
Sample Part Number
25 -050 X
Type:
25 - Over/Underfrequency
Frequency Range
Under
050 = 40-50 Hz
060 =
50- 60 Hz
400 =
350- 400 Hz
Mounting Options
X = Flange
blank = Stud
11
Protective Relays
Operation
The normally open contacts
close, and the normally
closed contacts open, at
nominal frequency. The
contacts are de-energize
at underfrequency,
overfrequency or no input
voltage.
4 1/ 2
3
The output contacts of
frequency relays are energized when the frequency
exceeds the adjustable
set point. Overfrequency
and underfrequency relays
are available in 50, 60 and
400Hz. Combination over/
underfrequency “band pass”
relays are also available.
These are energized
at rated frequency and
de-energized during overfrequency or underfrequency
conditions. Frequency
Differential relays are energized above the preset
frequency. The pick-up and
drop-out frequency settings
are independently adjustable.
Input Voltage (±10%) — 120 VAC
Frequency Range (adjustable) —
See Ordering Information
Trip Points — Screwdriver adjustable
Temperature Range —
-20°C to +85°C
Temperature Drift — ± 1% frequency
error over temperature range
Voltage Drift — ± 1% frequency error
input voltage variation of ± 10%
Contact Ratings — 5 Amp resistive at
120 VAC or 28VDC
Output Contacts —
One set N.O., One set N.C.
Over
50-60 Hz
60-70Hz
400-450Hz
Consult factory for additional
models.
PAGE 31
Protective Relays
20-050-19 Series (Voltage/Frequency)
Product Facts
n Function
27/81
n ANSI/IEEE
n UL
Product Specifications
#6 - 32 STUDS
6 PLACES
C37.90-1978
file No. E58048
n CSA
file No. LR61158
R
R
4 1/2
3 13/16
Notes:
1. R
emove black screws for access
to the voltage and frequency and
the time adjustments.
2. C
lockwise rotation of the voltage
adjustment potentiometer will
raise the voltage trip point.
3. C
lockwise rotation of the
frequency adjustment will raise
the frequency time point.
3.0 2
1/
3
The output contacts of
frequency relays are energized when the frequency
exceeds the adjustable set
point. Overfrequency and
underfrequency relays are
available in 50, 60, and
400Hz. Combination over/
underfrequency “band
pass” relays are also available. These are energized
at rated frequency and
de-energized during overfrequency or underfrequency
conditions. Frequency
Differential relays are energized above the preset
frequency. The pick-up and
drop-out frequency settings
are independently adjustable.
2
Nominal Voltage (±20%) —
120 VAC, Single Phase
Nominal Frequency — 60 Hz.
Voltage Adjustment Range (PU) —
85 to 120 VAC
Frequency Adjustment Range
(PU) — 45 to 60 Hz
Output Contacts —
One set N.O., one set N.C.
Contact Ratings — 5 amp resistive at
120 VAC or 28 VDC
3 /4
1 /2
3
11 /64" DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Ordering Information
Sample Part Number
20-050-19X
Type:
20-050-19 = Voltage/Frequency
Mounting Options
Blank = stud
X = Flange
Options:
P = Surge Suppression
Consult factory for additional
models.
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
Protective Relays
WGD Series — Floating Ground
Product Facts
n ANSI/IEEE
n UL
TERMINAL STRIPS
#6 - 32 SCREWS
C37.90-1978
file No. E58048
n CSA
file No. LR61158
R
R
3.0
3
5 /8
1 /2
1 /8
4
3 /
1 4
4 /
1 2
11 / 64 " DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
Sensing Voltage (±10%) —
3 phase, 3-wire. See Ordering
Information.
Control Voltage — 120 Volts AC
Contacts Trip Points (sensitivity) —
Screwdriver adjustable. See Ordering
Information.
Pick-up Time Delay — 1.5 seconds
approximately
Contact Ratings — 5 amp resistive at
120 VAC or 28 VDC
Operating Temperature —
-40°C to +65°C
Temperature Effects —
± 1% over temperature range
Power Consumption —
Sensing: —2 mA/Phase Approx.,
Control — 2VA at 120VAC
Surge Withstand Capability —
In accordance with the requirements of
ANSI/IEEE
Notes:
1. R
emove screw for access to the
pick-up adjustment potentiometer.
2. C
lockwise rotation of the adjustment potentiometer will raise the
relay sensitivity.
Ordering Information
Sample Part Number
Type:
Volts L-L
115-120AC
120-120AC
200-120AC
208-120AC
220-120AC
230-120AC
240-120AC
380-120AC
400-120AC
416-120AC
440-120AC
460-120AC
480-120AC
525-120AC
575-120AC
600-120AC
115
120
200
208
220
230
240
380
400
416
440
460
480
525
575
600
WGDTrip Point Adj.
Phase to Ground
11-55KΩ
12-60KΩ
20-100KΩ
21-105KΩ
22-110KΩ
23-115KΩ
23-115KΩ
38-190KΩ
40-200KΩ
42-210KΩ
44-220KΩ
46-230KΩ
48-240KΩ
52-260KΩ
57-285KΩ
60-300KΩ
PAGE 33
11
Protective Relays
Operation
When the resistance
between any phase to
ground falls below the set
point the relay will energize;
The normally closed contacts will open, the normally
open contacts will close.
4
Ground Fault Detectors
are used to sense leakage
current to ground in power
transformers and generators. They are available for
both AC and DC systems.
Some generator systems
provide auxiliary power
outlets for small equipment.
TE Connectivity GFD’s
eliminate personnel risk of
accessing these outlets if a
ground fault exists. Diesel
locomotives and railroad line
signal boxes also use GFD’s
for operational control purposes. The GFD monitors
both positive and negative
grounds for fault currents
and can trigger either
notification or system shutdown if these are detected.
GFD’s are available for both
grounded and ungrounded
systems.
Product Specifications
Protective Relays
WC1G Series — Grounded
TERMINAL STRIPS
#6 - 32 SCREWS
3.8
3.0
1 /2
/38
35 5
2
4.1
/2
41
Ground Fault Detectors are
designed to provide very
sensitive Ground-Current
protection for motor, equipment and personnel from
damage or electrical shock.
In a ground system, the
leakage current is monitored
through a toroidal or doughnut current transformer
placed around the supply
conductors to a motor,
transformer, equipment or
outlets. Since the sums of
the current in a system add
to zero, the relay is responsive only to ground-fault
current.
1. Control voltage is applied.
11/ 64" DIA.
4 MTG. HOLES
Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm.
2. Leakage current exceed
the trip setting.
Current Transformer
Ordering Information
Sample Part Number
Model:
WC1GControl Voltage
120AC
220AC
230AC
380AC
400AC
460AC
480AC
575AC
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
CT Window Diameter — 1.7 inches
(std) or can be specified by customer
Leakage Current Range —
10 to 60 mA
Control Voltage — See Ordering
Information
Output Contacts — One set N.C.,
one set N.O.
Operating Temperature —
40°C to +65°C
Contact Ratings — 10 amp resistive
at 250 Vac, 8 amp. resistive @ 30 Vdc
Notes:
1. R
emove screw for access to the
pick-up adjustment potentiometer.
2. C
lockwise rotation of the adjustment potentiometer will raise the
relay sensitivity.
1 2
3 /
1 4
4 /
Operation
The output contacts are
shown in de-energized position. They will change state
when these conditions are
met:
Product Specifications
WC1G-120AC
Protective Relays
Additional Relays
OVERVOLTAGE RELAYS
30/60VAC, 400V Max. Contin., 120V 60Hz Ctrl.
300-52X 208VAC, 208-291V, 24VDC Ctrl., 1 N.O.
Contact
300-53X
200-480VAC, 200-240V Range
300DC-1X
28VDC, Set at 30V, Curve 1 MIL-STD-704
AC, SINGLE PHASE, 400 HZ
302X 120VAC
302-SX
120VAC, A.E.I. . Special
302-1X
120VAC, 0.3 Sec. T.D.
302-2X
120VAC, 125-175V Range
302-3X
120VAC, 125-150V Range with T.D.
302-4X
120VAC, 125-150V Range, 0.3 Sec. T.D.
AC, THREE PHASE, 50-400 HZ, SPECIALS
301X 120/208VAC4W
301-SX 120/208VAC, 4W, Similar to WOV-3-208 with
hi-shock
301-HX
120/208VAC, 4W, 125VDC 3A Contacts
301-1X
240VAC, 4W, 240-330V Range
301-2X
220/380VAC, 4W
301-3X
254/440VAC, 4W, 440-605V Range
301-3HX
277/480VAC, 4W, 125VDC 3A Contacts
301-4X
127/220VAC, 4W, 220-275V Range
301-4HX
120/208VAC, 4W, 125VDC 3A Contacts
301-5X
380VAC, 4W, 370-460V Range
301-6X
380VAC, 4W, 375-528V Range
301-7X
120/208VAC, 4W, 0.022 Sec. T.D.
301-8X
120VAC. 3W, 120-150VAC
301-9X
240VAC, 3W, 240-300V Range
301-11X
120/208VAC, Similar to 301-7X
301-12X
440VAC, 3W
301-13SX
120/208VAC, 4W, Hi-Shock, T.D., Solar
301-15X
120/208VAC, 4W, 140-180V Range
301-16X
254/440VAC, 4W, Sim to 301-3, but 3 XFMS
301-17SX
120VAC, 3W, Sim to 301-13SX except 120V
301-18X
277/480VAC,4W,3 independent adjustments
301-19SX
94VAC, 3W, Similar to 301-17SX
301-20SX
86/150VAC, 4W, 90-120V Range, T.D., Solar
301-21X
460VAC, 3W, 125VDC Contacts
301-22X
277/480VAC, 4W, 323-425V Range (L-N)
301-23X
380VAC, 3 or 4W, 0.022 Sec. T.D.
301-25X
120/208V, 4W, 2-3 Sec. T.D.
301-26X
416VAC, 3 or 4W, 415-520V Range
301-27X
277/480VAC, 4W, 2-3 Sec. T.D.
301-28X
20.8VAC, 3W, 20-25V Range
301-29X 480VAC, 3 or 4W, Sim. to 301-3X with
spike supp.
301-30SX
100VAC, 3W, 100-125V Range, hi-shock
301-31X
208-240, 3W, 200-280V Range, 45-65 Hz.
301-32X
400VAC, 3W, 400-500V Range
301-34X
208VAC, 3W, Set 240V, Withstand 600V contin.
301-35X
120VAC, 3W, 3-5 Sec. T.D.
301-37X 120VAC, 3W, Sim. to 301-8X with
spike suppression
301-39X
138/240VAC, 3 or 4W, 2 Sec. T.D.
301-40X
120/208VAC, 4W, Highest of 3, Solar
301-41SX 450VAC, 3W, Navy Hi-Shock,
75VDC 3A Contacts
301-42X
120VAC, 3W, Highest of 3, 120-150V Range
301-45X
120/208VAC, 4W, Highest of 3, Adj. T.D.
301-46X
104VAC, 3W, Similar to WOV-3-104
PAGE 35
11
Protective Relays
AC, SINGLE PHASE, 50-400 HZ, SPECIALS
300X 120VAC
300HX 120VAC, Similar to 300X,with 125VDC 3A
Contacts
300S-1X
440VAC, 370-480V Range, Navy High Shock
300-2X
120VAC, Set at 132V, .010 Sec.Time Delay
300S-2X
120VAC, Navy High Shock
300-3X
190VAC, 180-280V Range
300-4X
190VAC, P.U. 264V, D.O. 261V
300-5X
240VAC, 230-360V Range
300-5KX
240VAC, Similar to 300-5X, except 1-10KHz
300-6X
230VAC, 230-300V Range
300-7X
450VAC, 375-475V Range
300-8X
120VAC, P.U. 130V, D.O. 125V
300-9X
120VAC, P.U. 132V, D.O. 126V
300-10X
120VAC, 99-132V Range
300-10HX 120VAC, Sim. to 300-10X, 125VDC 3A
Contacts
300-11X
120VAC, 0.5 Sec. Time Delay
300-12X
480VAC,480-600V Range
300-13X
120VAC, 2 N.O. Contacts
300-14X
95VAC, 95-120V Range
300-17X 120VAC, Similar to 300X with Spike
Suppression
300-18X
120VAC, Differential, 2V Max.
300-20X 10VAC, 8-12V Range, 120V Transient,
120VAC Ctrl.
300-21X
120VAC, 1.5-2.0 Sec. Time Delay
300-24X
277VAC, 140-320VAC Range
300-25X
24VAC, 24-30VAC Range
300-26X
120VAC, 90-150V Range
300-27X
120VAC, 105-135VAC Range
300-28X 10VAC, 8-12VAC , 220VAC Transient,
120VAC Ctrl.
300-29X
120VAC, 150-180V Range
300-30X
120VAC, 375V Max., 24VDC Control
300-32X 120VAC, 135-180V Range, 1.5 Sec. Time
Delay
300-33X
115/230VAC, DPDT Contacts 230VAC 1A
300-34X
100VAC, 1.5-2.0 Sec. T.D., 100-120V Range
300-35X
480VAC, 1.5-2.0 Sec. T.D., 480-600V Range
300-36X
138VAC, 138-172V Range
300-37X
350VAC, 350-450V Range, 2.0 Sec. T.D., Supp.
300-38X 120VAC, 99-132V Range, 125VDC 1A
Contacts
300-39X
120VAC, 120-150V Range, 0.3-3.0 Adj. T.D.
300-40X
230VAC, 220-300V Range, 2.0 Sec. T.D.
300-41X
120VAC, 120-165V Range, 1.5 Sec. T.D., Supp.
300-42X 120VAC, Similar to 300-39X, but 2 N.O.
Contacts
300-43X 120/240VAC, 140-180V Range, Phase
Protection
300-44X
277VAC, 277-350V Range
300-45X
30/60VAC, 277V Continuous, 115VAC Control
300-46X
67VAC, 67-120V Range
300-47X
360VAC, 10-64V Range, 0.75-7.5 Sec. T.D.
300-48X
10VAC, 8-21V, 220VAC Transient, 125VDC Ctrl.
300-49X 120VAC, Similar to WOV-1-120,
but 0.2 Sec. T.D.
300-50X
120/240VAC, Highest of 2, 0.5-10 Sec. T.D.
300-51X
Protective Relays
Additional Relays (Continued)
301-47X 69/120VAC, 4W, 69-90V Range, 120V (L-N)
Contin.
301-48X
380VAC, 3 or 4W, 380-500V Range
301-49X
250VAC, Withstand 520VAC Continuous
301-50X
180VAC, 3W, Similar to WOV-3-180
301-51X
120VAC, 3W, Supp, 10CFR Class1E (Nuclear)
301-52X
95VAC, 3W, 95-120V (L-L) Range
301-53X 115/200VAC, Similar to WOV-3-200,
1.0 Sec T.D.
AC, THREE PHASE, 400 HZ
303X
120/208VAC, 4W
303-1X 115/200VAC, 4W, Highest of 3, T.D.,
MIL-E-7894
303-1SX
115/200VAC, 3W, High Shock
303-2X
120/208VAC, 4W, High of 3, T.D., MIL-E-7894
303-3X
120/208VAC, Highest of 3, T.D.
303-4X
120VAC, 3W, 120-160V Range
303-8X
254/440VAC, 4W
303-9X
240/416VAC, 4W
303-10X
120/208VAC, 4W, 168V P.U., Kato
303-12X
120/208VAC, 4W, Fast Operating
303-13X
120/208VAC, 4W, 0 deg. C to 90 deg. C
303-15X 120/208VAC, Sim. to 303-13X with
Latching Circuit
303-16X
120/208VAC, 303X with conformal coating
DC
310DCX
28VDC, 28-36V Range
310DC-HX
28VDC, 28-36V Range, 125VDC 2A Contacts
310DC-SX 28VDC, 28-36V Range, 2A Contacts,
High Shock
310DC-2X
28VDC, 28-36V Range, T.D., MIL-E-7894 Fig. 2
310DC-3X
28VDC, 35-46V Range, T.D., MIL-E-7894
310DC-4X
28VDC, Set 31V, 2 Sec; 40V, 0.2 Sec.
311DCX
12VDC, 12-16V Range
311DC-1X
12VDC, 12-16V Range, 1V Differential
320DCX
60VDC, 60-85V Range
320DC-HX
60VDC, 60-85V Range, 125VDC 2A Contacts
320DC-1X
35-60VDC, Spike Suppression
320DC-2X
55-80VDC, Spike Suppression
320DC-4X
48VDC, 48-70V Range
320DC-5X
20-70VDC, 120VAC Control
330DCX
120VDC, 120-160V Range
330DC-HX 120VDC, 120-160V Range,
125VDC 2A Contacts
330DC-1X
120VDC, 110-150V Range
330DC-2X
120VDC, 150-190V Range
340DCX
240VDC, 240-300V Range
340DC-HX 240VDC, 240-300V Range,
125VDC 2A Contacts
340DC-1SX 200VDC, 240-300V Range, Non-Mag.,
High Shock
350DCX
305VDC, 280-400V Range
350DC-HX 305VDC, 280-400V Range,
125VDC 2A Contacts
350DC-1SX 250VDC, 280-400V Range, Hi-Shock,
120VAC Control
360DCX
405VDC, 400-470V Range
360DC-HX 405VDC, 400-470V Range,
125VDC 2A Contacts
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
360DC-1X 405VDC, 400-470V Range, Spike
Suppression
360DC-2X
475VDC, 475-550V Range
360DC-3X
550VDC, 550-600V Range
360DC-4X
350VDC, 350-440V Range, Bi-Directional
360DC-4HX
350VDC, 350-440V Range, Bi-Directional
370DCX
620VDC, 600-670V Range
370DC-2X
550VDC, 550-650V Range
370DC-1X
610VDC, 600-800V Range, 120VAC Control
370DC-3X
610VDC, 800-1000VDC Range
370DC-5X
960VDC, 900-1000VDC Range
AC, SINGLE PHASE, 50/60 HZ, SPECIALS
400X 120VAC
400HX 120VAC, Sim. to 400X with
125VDC 3A Contacts
400SX
120VAC, Hi-Shock, 10A Contacts
400-1X
120VAC, 55-72V Range
400-1HX 120VAC, Sim. to 400-1X,
125VDC 3A Contacts
400-S-1
450VAC, 240-350V Range, Hi-Shock, T.D.
400-2X
120VAC, 0.017 Sec. T.D.
400-S-2
440VAC, 280-420V Range, Hi-Shock, T.D.
400-3X
120VAC, 4.8 Sec. T.D., 80-115V Range
400-S-3
440VAC, 280-420V Range, Hi-Shock, T.D.
400-4X
240VAC, 170-240V Range
400-S-4 440VAC, Sim. to 400-2SX, 2-3 Sec. T.D.,
D.O. 160V
400-5X
450VAC, 320-450V Range
400-5SX 450VAC, 70-100% Range, Hi-Shock,
10A Contacts
400-6X
120VAC, 90-123V Range
400-7X
277VAC, 190-290V Range
400-8X
120VAC, 55-80V Range
400-8SX
120VAC, 50-70% Range, Hi-Shock
400-9X
480VAC, 320-480V Range
400-10X
120VAC, 1.0 Sec. T.D. with power loss
400-11X
480VAC, 1.0 Sec. T.D., 320-480V Range
400-12X 120VAC, Similar to 400-10X except 1 N.O.
& 1 N.C.
400-13X
120VAC, 14-30V Range
400-14X
67VAC, 30-67V Range, Suppression
400-16X
120VAC, 0.6 Sec. T.D., 50-420 Hz
400-17X
120VAC, Similar to 400-2 with seismic
400-19X
120VAC, 125VDC 2A Contacts, Suppression
400-20X
208VAC, 24-48V Range
400-21X
120VAC, 94.8-102V Range, 6 +/-2 Sec. T.D.
400-23X
480VAC, 320-480V Range, 2.0 Sec. T.D.
400-24X
120VAC, 2.0 Sec. T.D.
400-25X
240/480VAC, 3-30Sec. T.D., Latching
400-26X
480VAC, 160-200V Range
400-27X 460VAC, 250-350V Range, 0.3 Sec. T.D.,
Set to 76V
400-28X
0.5VAC, 0.5-1.0V Range, 115VAC Control
400-29X
120VAC, 0.15 Sec. T.D., 10A Contacts
400-30X
24VAC, 18-24VAC Adjustable
400-31X
120VAC, 105-135V Range
400-32X
120VAC, 1 Ph. T.D. 0-10 Sec.
400-33X
480VAC, 1 Ph. T.D., 0-10Sec.
400-34X
120VAC, 55-72V Range, 2 N.O. Contacts
400-35X
120VAC, Similar to 400X, but 2 N.C. Contacts
Protective Relays
Additional Relays (Continued)
AC, SINGLE PHASE, 400 HZ
402X 120VAC
402-SX
120VAC, Hi-Shock, NSN 5945-00-258-6662
402-1X
240VAC, 170-240V Range
402-1SX
240VAC, High Shock
402-2X 120VAC, 90-120V Range, 0.3 Sec. T.D.,
Set to 96V
402-3X
120VAC, Similar to 402-2X with 10A Contact
402-4X
120VAC, Similar to 402-2X with 0.15 Sec. T.D.
AC & DC, SINGLE PHASE, CLOSE DIFFERENTIAL
D100-10X
120VAC, 50-500Hz, -40 to +75 deg. C
D100-13X
450VAC, D.O. 60-100%, P.U. 66-100%
D100-15X
120VAC, 50-500Hz, 125VDC, 1 Amp Contacts
D100-16X
208VAC, 50-500Hz, 125VDC, 1 Amp Contacts
D100-17X 120VAC, 50-500Hz, 450VAC Input Capacitor,
GE
D100-18X 120VAC, Hi-Shock, D.O. 72-84,
P.U. 102-114 Range
D100-19X 120VAC, Hi-Shock, D.O. 80-120,
P.U. 80-120 Range
D100-20X
150VAC, 105-150V Range
D100DCX
60 VDC, 48-55VDC Range, 1.5 Sec. T.D.
D100DC-15X
120VDC, 80-120VDC Adjust,0.4V Differential
D100DC-16X
60VDC, 40-60VDC Adjust, 0.2V Differential
D100DC-18X
40VDC, 20-40VDC Adjust, 120VAC Control
D100DC-19X
140VDC, 100-140VDC, 0.4V Differential
D100DC-22HX 120VDC, 80-120VDC Range,
120VDC Contacts
D100DC-23X
260VDC, 195-260VDC Range
D100DC-35X 30-40VDC Range, Plug-in,
NSN 5945-00-650-8613
D100DC-36X
48VDC, Adjustable 38-48VDC
D100DC-37X 75VDC, 50-80VDC Range, 0.5A,
74VDC Contacts
D100DC-38X 270VDC, 190-270VDC Range, Similar to
D100DC-23
D100DC-39X
28VDC, Adjustable 15-30VDC
D100DC-40X
28VDC, Approx. 2.0 Sec T.D.
AC, THREE PHASE, 50/60 HZ, SPECIALS
401X
120/208VAC, 4W, 85-120V Range
401-HX
120/208VAC, 4W, 125VDC 3A Contacts
401-1X
240VAC, 4W, 182-244V Range (L-L)
401-2X
480VAC, 4W, 360-485V Range (L-L)
401-2HX
480VAC, 3 or 4W, 125VDC 3A Contacts
401-3X
220VAC, 3W, 160-200V Range (L-L)
401-4X
380VAC, 4W, 150-220V Range (L-N)
401-5X
120VAC, 4W, 90-120V Range (L-L)
401-6X
120VAC, 3W, 85-120V Range (L-L)
401-7X
480VAC, 4W, 332-407V Range (L-L)
401-8X
100VAC, 3W, 70-100V Range (L-L)
401-9X
120/208VAC, 4W, Fast Operating
401-9HX 120/208VAC, 4W, 0.02S T.D., 125VDC 3A
Cont.
401-10X
480VAC, 3W, 360-485V Range
401-10HX
480VAC, 3W, 125VDC 3A Contacts
401-11X
240VAC, 3W, 180-240V Range
401-11HX
240VAC, 3W, 125VDC 3A Contacts
401-12X
120/208VAC, 4W, 1.0 Sec. T.D.
401-12HX 120/208VAC, 4W, 1.0 Sec. T.D.,
125VDC 3A Contacts
401-13X
380VAC, 3W, 1.0 Sec. T.D.
401-14X
480VAC, 4W, 0.5 Sec. T.D.
401-15X 120/208VAC, Sim. to 401X with 6” leads
and socket
401-16X 380VAC, Sim. to 401-4X with 6” leads
and socket
401-17SX
120/208VAC, 4W, 10 Sec. T.D., Solar
401-18X 480VAC, 3W, 2.0 Sec. T.D., 90% P.U., 70%
D.O.
401-19X 120/208VAC, Sim. to 401X with 2KV Diodes,
Supp.
401-20X 69/120VAC, 4W, 25-35V Range, 4KV Diodes,
Supp.
401-21X 120/208VAC, 4W, 85-120V Range,
0.05 Sec. T.D.
401-22X
480VAC, 3 or 4W, 5.0 Sec. T.D.
401-23X
120VAC, 3W, 0.05 Sec. T.D.
401-24X
120VAC, 3W, 2 N.C. Contacts
401-25SX
120VAC, 3W, 10Sec. T.D., Solar
401-26X
67/115VAC, 4W, Suppression
401-28X
120/208VAC, 4W, 60-100V Range, Set at 90V
401-29X
120VAC, 4W, 90-120V Range, 1.0 Sec. T.D.
401-29HX 69/120VAC, 4W, 1.0 Sec. T.D.,
125VDC 3A Contacts
401-30X 480VAC, 3W, 360-480V Range, 2.0 Sec. T.D.
125VDC 3A Contacts
401-31SX
94VAC, 3W, 10 Sec. T.D., Solar
401-33X
480VAC, 4W, 139-231V Range (L-N)
401-34X
120/208VAC, 4W, 2-3 Sec. T.D.
401-35X
208VAC, 3W, 0.008 Sec. T.D., 28VDC Control
401-36X
480VAC, 3W, 0.008 Sec. T.D., 28VDC Control
PAGE 37
11
Protective Relays
400-36X 120VAC, Similar to 400-24X, 1 N.O.,
1 N.C. Contact
400-37X
120VAC, Similar to 400X, with Suppression
400-38X 120VAC, 85-120V, 1-20 Sec. T.D.,
Instant. at 50V
400-38PX 120VAC, Similar to 400-38X with Spike
Protection
400-39X
120VAC, 1.0 Sec. T.D., Transient Protection
400-40X
120VAC, 0.083 Sec. T.D.
400-41X
120VAC, Similar to 400X with 2 N.O. Contacts
400-43X
240VAC, 120-240V Range
400-44X
208VAC, 150-210V Range
400-47X
380VAC, Fast Operating, 220VAC 5A Contacts
400-49X
120VAC, 55-80V Range, 125VDC Contacts
400-50X 480VAC, 320-480V Range,
125VDC 1A Contacts
400-51X
120VAC, Sim. to 400-38X with 1-30 Sec. T.D.
400-52X
120VAC, 55-80V Range, 125VDC 2A Contacts
400-53SX
450VAC, 110-300V Range, 120V Control
400-54X
120VAC, Sim. to 400-13X with 1.0 Sec. T.D.
400-55X 208VAC, 125-208V, 24VDC Ctrl.,
1 N.O. Contact
400-56X
208VAC, 24-48V Range, 2 N.O. Contacts
400-57X 120VAC, 25 Hz, 84-120V,
125VDC 3A Contacts
400-58X
277VAC, 194-277V Range, 0.020 Sec. T.D.
400-59X
139VAC, 97-159V Range
400-60X
240VAC, 84-120V Range
400-6lPX
120VAC, Similar to WUV-1-120P
400-62X
120VAC,30-42V Range, 125VDC Contacts
400-63X
120VAC,30-42V Range, 120VAC Contacts
Protective Relays
Additional Relays (Continued)
401-37X
120VAC, 3W, 5.0 Sec. T.D.
401-38X
380VAC, 3W, 0.05 Sec. T.D.
401-39X
480VAC, 4W, 250-550V Range (L-L)
401-41X
240/416VAC, 4W, 312-416V Range (L-L)
401-41HX
230/400VAC, 4W, 125VDC 3A Contacts
401-42X
120/208VAC, 4W, 5.0 Sec. T.D.
401-43SX
480VAC, Sim. to 403-7SX except 60 Hz.
401-44X
139/240VAC, 4W, 2.0 Sec. T.D.
401-45X 120VAC, 3W, 85-120V Range (L-L),
125VDC Contacts
401-46X
480VAC, Similar to 401-2X with Suppression
401-47X
380VAC, 3W, 2.0 Sec. T.D.
401-48X
208VAC, 3W, 145-208V Range
401-49X
20.8VAC, 3W, 15.5-20.8V Range
401-50X
120VAC, 3W, 0-10 Sec. T.D.
401-51SX
90/156 VAC, 4W, Similar to 401-17SX
401-52X
480VAC, 3W, Sim. to 401-10X
401-53X
120/208VAC, 4W, 1 N.O., 1 N.C.
401-54X
400VAC, 3W, 300-400V Range
401-55X
600VAC, 3W, 480-600V Range
401-58X 120/208VAC, Sim. to 401X except
2 N.C. Contacts
401-59X
220-380VAC, Dual Voltage 220V or 380V
401-60X
480VAC, 1 N.O., 1 N.C. Contact, 2-3 Sec. T.D.
401-61X 120VAC, 3W, 85-120V Range (L-L),
1.0 Sec. T.D.
401-62X
380VAC, 3W, 220VAC 5A Contacts
401-63X
120VAC, 3W, Sim. to 401-6X with Suppression
401-67X
120/208VAC, 4W, 1.0 Sec. T.D., -55F to +150F
401-68X
120VAC, 3W, 85-120V Range, 2-3 Sec. T.D.
401-69X
120/208VAC, 4W, 85-120V Range, Lowest of 3
401-70X
133/230VAC, 4W, 99-133V Range, Lowest of 3
401-71X
220/380VAC, 4W, 154-220V Range, Lowest of 3
401-72X
266/460VAC, 4W, 186-266V Range, Lowest of 3
401-74X 66/115VAC, 4W, 65-75% Adj., Supp.,
125VDC Cont.
401-75X
115/200VAC, 3W, 65-75% Adj., Suppression
401-76SX 450VAC, 3W, 382-450V, 0.3-0.5S T.D.,
Hi-Shock
401-77X
120/208VAC, 4W, 0.5-10 Sec. T.D., Lowest of 3
401-79X
480VAC, 3W, 0.2-0.3 Sec. T.D., Suppression
401-80X
76VAC, 3W, 53-76V Range
401-81X 120/208VAC, Sim. to 401-12X with
48VDC Contacts
401-82X
104VAC, 3W, Similar to WUV-3-104
401-83SX
120/208VAC, MIL-R-2033A
401-84X
180VAC, 3W, Similar to WUV-3-180
401-85SX
480VAC, Similar to 401-25SX except 480V
401-86SX
380VAC, Similar to 401-25SX except 380V
401-87SX
240VAC, Similar to 401-25SX except 240V
401-90X
120/208VAC, 4W, 0.5 Sec. T.D.
401-93X
480VAC, 3W Fast Oper. 50mS., Suppression
401-97X
69/120VAC, Lowest of 3
401-98X
480VAC, Sim. to 401TD-9HX with 2.0 Sec. T.D.
403X
403-1X
403-1SX
403-2X
403-3X
403-4X
403-5X
AC, THREE PHASE, 400 HZ
120/208VAC, 4W
115/200VAC, 4W, 35-400mS T.D.
115VAC, 3W, Hi-Shock
120VAC, 3W
120/208VAC, 4W, 1.0 Sec. T.D.
254/440VAC, 4W
120/208VAC, 4W, 2 N.C. Contacts
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
403-7SX
480VAC, 3W, T.D., Hi-Shock
403-10X
120/208VAC, 4W, 10A Contacts
403-11X
480VAC, 4W, 60% to 80% Range
403-13X
120/208VAC, 4W, 0C to +90C
403-14X
575VAC, 3W, 400-500V Range
403-15X 120/208VAC, Sim. to 403-13X with
Latching Circuit
403-16X 120/208VAC, Sim. to 403X with Conformal
Coating
AC THREE PHASE, CLOSE DIFFERENTIAL
D101-3X
Similar to D101X, -55C to +85C
D101-5X
120VAC, 50-500Hz, Military
D101-9X
120VAC, 50-500Hz, 0.5 Sec. T.D.
D101-11X 120VAC, 50-500Hz, 120-150VAC Adjust,
N.C. Cont.
D101-12X 120VAC, Similar to D101X but
60-120VAC Range
D101-13X 120VAC, Similar to D101X but
3 N.C. Contacts
D101-14X 208VAC, Similar to D101-6X but
3 N.C. Contacts
D101-15X
480VAC, 50-500Hz, Spike Suppressors
D101-16X 480VAC, Similar to D101-7X but
3 N.C. Contacts
D101-17X 120VAC, 0.4A 120VDC Contact,
-20 to +85 deg C
D101-18X 120VAC, Similar to D101X but
Spike Suppression
D101-19X 208VAC, Similar to D101-6X but
Spike Suppression
D101-20X 240VAC, Similar to D101-4X but
Spike Suppression
D101-21X 380VAC, Similar to D101-10X but
Spike Suppression
D101-24X
240VAC, 3 N.C. Contacts
D101-25X
208VAC, 3 N.C. Contacts, Spike Suppression
D101-26X
277VAC, 50-500Hz, 66-100% Adjustable
D101-27X 120VAC, Sim. to D101X, withstand
208V continuous
D101-29X
415VAC, 50-500Hz
D101-30X
380VAC, 50-500Hz, 3 N.C. Contacts
D101-31X
525VAC, Spike Suppression
D101-32X
120VAC, 50-500Hz, 5 Sec T.D.
DC
400DCX
120VDC, 85-120V Range
400DC-HX 120VDC, 85-120V Range,
125VDC 2A Contacts
400DC-lX
28VDC, 15-29V Range
400DC-2X
240VDC, 180-220V Range
400DC-3X
62.5VDC, 40-65V Range
400DC-4X
305VDC, 200-300V Range
400DC-5X
5.6VDC, 4-6V Range, 120VAC Cont
410DCX
28VDC, 16—29V Range
410DC-SX
28VDC, 16-29V Range, Hi-Shock, MIL-R-57
410DC-1X
28VDC, 15-32V Range, 1.5V Differential
410DC-5X
24VDC, 16-29V Range, Suppression
410DCTDX
28VDC, 0.5-20 Sec. T.D.
411DCX
12VDC, 9-12 V Range
411DC-1X
15VDC, 11-15V Range
411DCTDX
12VDC, 0.5-20 Sec. T.D.
420DCX
60VDC, 40-65V Range
Protective Relays
Additional Relays (Continued)
420DCTDX
430DCTDX
440DCTDX
DC TIME DELAY
48VDC, 32-48V Range, 0.5-20 Sec. T.D.
125VDC, 83-125V Range, 0.5-20 Sec. T.D.
250VDC, 166-250V Range, 0.5-20 Sec. T.D.
OVER/UNDERVOLTAGE RELAYS
AC, SINGLE PHASE
250SX
120VAC, Hi-Shock
250-1X 120VAC, 72-120V, Mil,
NSN 6125-00-091-0969
250-2X
120VAC, 1.2 Sec. Time Delay
250-3X
67VAC, UV 30-67V, OV 67-91V
250-4X
26VAC, 28VDC Control, Connector
250-5X
240VAC, Two N.C. Contacts
250-6X
240VAC, One N.O., One N.C. Contact
250-6HX
240VAC, 120VDC, 3A Contact
250-7X
120VAC, 3 Sec. Time Delay
250-8X 100VAC
250-10X
120VAC, Fast Trip, 25mS
250-11X
120VAC, Set at 97V and 156V
250-12X
120VAC, Sim. to 250X, MIL-R-5757 2A
250-14XAC
67VAC, Sim. to 250-3X with removable cover
250-17X
120VAC, Sim. to 250X plus suppression
250-19X
120VAC, Sim. to 250X with 2 N.O. Contacts
250-22X
240VAC, 1-2 Sec. TD on Drop Out
250-23X
120VAC, Sim. to 250X but -40C to +52C
250-27X
139VAC, Same as 250-12X except voltage
250-28X
138VAC, Same as 250-10X except voltage
250-29HX
120VAC, 50-400Hz., 125VDC 3A Contacts
250-30X 480VAC
250-31X
240VAC, Fast Trip 25mS
250-32HX 480VAC, 100Hz, 1Sec TD,
120V 3ADC Contacts
250-33HX 480VAC, 25Hz, 1 Sex TD,
120V 3ADC Contacts
250-34X
120VAC, 72-120-160V Range, Hi Shock
250-35X
230VAC, Sim. to 250-22X, 3.0 Sec. TD
250-36X 120VAC, 84-120-150V Range, Hi Shock,
-40C to 70C
250-37HX 120VAC, 25 Hz, 1 Sec. TD,
120V 3ADC Contacts
250-38X
240VAC, Two N.O. Contacts
250-39X
120VAC, Similar to 250X, Range +/- 35%
AC, SINGLE PHASE, 50-400HZ
251SX
120/208VAC, Sim. to 251X with Hi Shock
251-1X 120/208VAC, 4W, 0.50 Sec. TD
NSN 5895-00-139-0337
251-4X
139/240VAC, 4W
251-5X
120/208VAC, 4W, Two N.C. Contacts
251-8X
120/208VAC, 4W, 1.2 Sec. TD
251-10X
110/190VAC, 4W
251-13X
120/208VAC, Sim. to 251X except -40C to 52C
251-14X 120/208VAC, 4W, Withstand 220/380V
Continuous
251-15X 120/208VAC, Sim. to 251X with Transient
Protection
251-16X
120/208VAC, 1.2 Sec. TD, Transient Protection
251-17X 120/208VAC, Similar to 251X,
208V 7.5A Contacts
251-18X 120/208VAC, Highest/Lowest of three,
TD Adjust 12VDC control
251-19X 120/208VAC, Highest/Lowest of three,
TD Adjust 120VAC control
251-20X 120/208VAC, Highest/Lowest of three,
TD Adjust, 24VDC Control
251-21X
120/208VAC, Sim. to 251X, 0.5Sec. TD
251-22X
115/200VAC, Sim. to 251X, 0.75Sec. TD
253-HX
230VAC, 3W, 48VDC 3A Contacts
253-1X
230VAC, 3W, Spike Suppression
253-1HX 230VAC, 3W, Spike Suppression,
125VDC Contacts
253-3X
230VAC, 3W, 1.0 Sec. TD
253-5X
230VAC, 3/4W, 2 N.C. Contacts, -51C to +71C
253-6X
230VAC, 3W, 3.0 Sec. TD
254-1X
415VAC, 3W, 290-415-519V
254-2X
220/380VAC, 4W, 2 N.C. Contacts
254-3X
416VAC, 3/4W, 2 N.C. Contacts, -51C to 71C
255-HX
460VAC, 3W, 125VDC 3A Contacts
255-1X
460VAC, 3/4W, Spike Suppression
255-2X
480VAC, 3W, High Shock
255-3X
495VAC, 3W, 3.0 Sec. TD
PAGE 39
11
Protective Relays
420DC-4X
48VDC, 32-48V Range
420DC-5X
48VDC, 20-48V Range
420DC-6X
70VDC, 50-70V Range
420DC-8X
32VDC, 33-40V Range (Pick-Up)
420DC-9X 48VDC, Similar to 420DC-4X with 2 N.O.
Contacts
420-470 SUFFIX
SUFFIX : “A” 2 N.O. Contacts
“B” 2 N.C. Contacts
430DCX
120VDC, 85-120V Range
430DC-HX 120VDC, 85-120V Range,
125VDC 3A Contacts
430DC-1X
140VDC, 105-140V Range
430DC-2X 140VDC, 105-140V Range, 0.5 Sec. T.D.,
Suppression
430DC-3X
120VDC, 50-80V Range
430DC-4X 120VDC, 85-120V Range, 0.5 Sec. T.D.,
Set at 90V
430DC-5X
125VDC, 90-125V Range, Spike Suppression
430DC-6X
125VDC, 105-140V Range, 3.0-5.0 Sec. T.D.
430DC-7X
170VDC, 120-170V Range
430DC-8X
120VDC, 85-120V Range, 2 N.C. Contacts
430DC-9X
100VDC, 35-50V Range
430DC-10X
120VDC, 85-120V Range, 2 N.O. Contacts
440DCX
240VDC, 168-240V Range
440DC-HX 240VDC, 168-240V Range,
125VDC 3A Contacts
440DC-1X
280VDC, 190-260V Range
450DCX
305VDC, 230-305V Range
450DC-HX 305VDC, 230-305V Range,
125VDC 3A Contacts
450DC-1X 305VDC, 230-305V Range,
2 N.C. Contacts
460DCX
405VDC, 315-415V Range
460DC-HX 405VDC, 315-415V Range,
125VDC 3A Contacts
460DC-1X
405VDC, 300-330V Range
460DC-3X
405VDC, 300-425V Range
460DC-4X
432VDC, 275-325V Range
460DC-5X
470VDC, 300-425V Range
470DC
560VDC, 400-500V Range
470DC-1X
585VDC, 400-500V Range
Protective Relays
Additional Relays (Continued)
255-4X 460VAC, 3W, 2 N.O. Contacts,
EMD # 9333490
255-5X 460VAC, 3W, Sim. to 255-4X, MIL-R-5757,
10A Relay
255-6X
460VAC, 3W, EMD# 9337151
255-7X 460VAC, 3W, Sim. to 255X, Fast operating,
40mSec.
255-8X 480VAC, 3W, 5.0 Sec. fixed TD, 120VAC
Control
255-9X 480VAC, 3W, Sim. to 255-8X except +/- 10%
Setting
AC, SINGLE PHASE, 50-400HZ
256-1X 600VAC, 3W, 60Hz, 2 N.O. Contacts,
EMD Canada
256-2X
575VAC, 3W, GM# 6964912 Rev. A
DC
250DC-HX
24VDC, 16-24-30V Range, 48VDC 3A Contacts
250DC-1X
28VDC, MIL Shock and Vibration
250DC-2X
26VDC, UV 20-30V, OV 26-36V
250DC-3X 28VDC, 20-28-35V Range, Hi Shock,
-40C to 70C
250DC-4X
14VDC, Commonwealth Edison
250DC-5X
28VDC, Commonwealth Edison
251DC-1X
48VDC, Removable Cover
251DC-2X
35VDC, UV 23-30V, OV 40-52V
251DC-3X
30VDC, UV 21-27V, OV 30-40V
251DC-HX
48VDC, 32-48-60V, 48VDC 3A Contacts
251DC-4X 60VDC, 45-60-75VDC, 2N.O. 120VAC
Contacts
252DCX
120VDC, 85-120-150V Range
252DC-1X
130VDC, 80-130/120-150V Range
252DC-1HX 125VDC, 85-125/125-160V, 48VDC 3A
Contacts
252DC-2X
130VDC, 80-130/120-150V, Removable Cover
253DCX
250VDC, 175-250-315VDC Range
253DC-HX 250VDC, 175-250-315VDC, 48VDC 3A
Contacts
REVERSE POWER RELAYS
710-HX
710-PX
710-1X
710-3X
710TD-1X
710TD-5X
710TD-7X
710TD-7PX
710TD-8X
710TD-9X
710TD-12X
710TD-14X
720TD-14X
721TD-14X
722TD-14X
723TD-14X
724TD-14X
AC, SINGLE PHASE
120/220/266VAC, 125VDC 3A Control
120/220/266VAC, 0.2-1.0A, Spike Suppression
120/220/266VAC, 125VDC 1/4A Control
120VAC (L-N), 1 Phase, 3-5A
120/220/266VAC. SINGLE PHASE
TIME DELAY
0.05-0.25A, 0.5-10 Sec. T.D. with Knobs
2 N.O. Contacts
60Hz, Reverse Inductive
Similar to 710TD-7X with Suppression
Similar to 710TDX with -55F to +150F
Similar to 710TDX with Suppression
Similar to 710TDX, 125VDC 2A Contacts
50Hz, Reverse Inductive
120 V, L-L, 50Hz, Reverse Inductive
230 V, L-L, 50Hz, Reverse Inductive
380 V, L-L, 50Hz, Reverse Inductive
460 V, L-L, 50Hz, Reverse Inductive
575 V, L-L, 50Hz, Reverse Inductive
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
725TD-14X
726TD-14X
727TD-14X
415 V, L-L, 50Hz, Reverse Inductive
100 V, L-L, 50Hz, Reverse Inductive
185 V, L-L, 50Hz, Reverse Inductive
PHASE SEQUENCE RELAYS
AC, THREE PHASE
900-2PX
208-230VAC, Spike Suppression
900-4X
208VAC, 50/60 Hz
900-5X
120VAC, 50/60Hz
900-8X
120VAC, 60 Hz, 125VDC 2A Contacts
900-10X
120VAC, 60 Hz, Spike Suppression
901-1X
440VAC, 60 Hz, 5A Contacts
901-5X
575VAC, Porcelain Term., AZ Relay
901-6X
460VAC, 60 Hz, Spike Suppression
901-SX
440VAC, 55-65HZ, HI-Shock
910-1X
220/440VAC, 60 Hz, N.O. Contacts
910-2X 220/440VAC, 60 Hz, Reversed Contact
Operation
910-3X 220/440VAC, 60 Hz, Porcelain Term.,
Sigma Relay
920X
380VAC, 50 Hz
920-1X
380VAC, 50 Hz, Mounting per 21-037
920-2X 380VAC, 50 Hz, Porcelain Terminals,
Sigma Relay
920-3X
416VAC, 50 Hz, 5A Contacts
920-5X
220/380VAC, 50 Hz
920-6X
440VAC, 50 Hz
930X
208VAC, 400 Hz
930-1X 208VAC, 400Hz, 2A at 28VDC Contacts,
Energized A-B-C, 5A
930-3X
400VAC, 400Hz
930-4X
400VAC, 2 N.C. Contacts, -51C to +71C
931X
120VAC, 400 Hz.
932-5X
115/200VAC, 400Hz, 2A Contact,Hi-Shock
932-7X
230/400VAC, 400Hz
PHASE FAILURE RELAYS
980X
981X
982X
983X
984X
985X
120VAC, 60 Hz, no T.D. on Starting
230VAC, 60 Hz, no T.D. on Starting
460VAC, 60 Hz, no T.D. on Starting
380VAC, 60 Hz, no T.D. on Starting
575VAC, 60 Hz, no T.D. on Starting
525VAC, 60 Hz, no T.D. on Starting
1980X
120VAC, 60 Hz
1981X
230VAC, 60 Hz
1982X
460VAC, 60 Hz
1983X
380VAC, 50 Hz
1984X
575VAC, 60 Hz
1985X
525VAC, 60 Hz
1986X
415VAC, 50 Hz
1987X
380VAC, 60 Hz
SUFFIX: “-S”: Time Delay (0.5 - 30 Sec.)
“-3S”: Factory Set Time Delay (0-60 Sec.)
1981-1SX
230VAC, Similar to 1981X except 50 Hz
1980-2SX 120VAC, Similar to 1980X except N.C.
Contacts
AC, THREE PHASE, VOLTAGE SENSITIVE
1003X-60HZ
380VAC, Similar to 1003X except 60HZ
1009X
415VAC, 50 Hz
1010X
208VAC, 50 Hz
Protective Relays
Additional Relays (Continued)
1001X-1010X SUFFIX “-1”: N.C. Contact (example: 1004-1X)
1001X-1010X SUFFIX “-2”: -53C to +70C, 2% Drift below -20C
1001X-1010X SUFFIX “-3”: 400Hz, N.O. Contacts
1001X-1010X SUFFIX “-T’: Spike Suppression
1001X-1010X SUFFIX “-H’: 125VDC 3A Contacts
1001X-1010X SUFFIX “-9” 1 N.O. & 1 N.C. Contacts
1001X-1010X SUFFIX “-12”: Spike Supp., 125VDC 3A Contacts
1001X-1010X SUFFIX “-13”: 1N.O + 1 N.C. 125VDC 3A Contacts
OVERCURRENT RELAYS
AC, SINGLE PHASE, ADJ. DIFFERENTIAL
D1100X
120VAC, 1-5A Range
D1100-2X
220VAC, 1-5A Range
D1100-3X
120VAC, 4-12A Range
D1100-4X
230VAC, 4-12A Range
D1100-5X
460VAC, 4-12A Range
D1100-6X
120VAC, 1-5A Range, 1-2 Sec. T.D.
D1100-7X 120VAC, 0.7-5A Range,
125VDC 0.5A Contacts
D1100-8X
120VAC, 5-15A Range
AC, SINGLE PHASE, TIME DELAY
1100TDX
120VAC, 1-5A Range, 0.5-30 Sec. T.D.
1100TD-HX 120VAC, 1-5A, 0.5-30 Sec. T.D.,
125VDC 3A Cont.
1100TD-SX 120VAC, 1-5A Range, 0.5-20 Sec. T.D.,
Hi-Shock
1100TD-1X
240VAC, 1-5A Range, 0.5-30 Sec. T.D.
1100TD-2X
24VDC, 1-5AAC Range, 0.5-30 Sec. T.D.
1100TD-3X
120VAC, 0.5-5A Range, 0.5-30 Sec. T.D.
1100TD-5X
120VAC, 0.5-2.5A Range, 0.5-30 Sec. T.D.
1100TD-6X 120VAC, 1-5A , 0.2-20 Sec. T.D.,
Manual Reset
1100TD-8X
220VAC, 2-10A Range, 220VAC 5A Contacts
AC, THREE PHASE, TIME DELAY
1130TDX
120VAC, 1-5A, 0.5-20 Sec. T.D.
1130TD-1X
24VDC, 1-5A, 0.5-20 Sec. T.D.
1130TD-2X
120VAC, 1-5A, 0.5-20 Sec. T.D., Suppression
1130TD-3X 120VAC, 1-5A, 0.5-60 Sec. T.D.,
2 N.C. Contacts
1150X
120VAC, 4.35A, 0.5-5 Sec. T.D.
1150-1X
120VAC, 4.26A, 0.5-5 Sec. T.D.
1150-2X
120VAC, 3.72A, 0.5-5 Sec. T.D.
1150-4X
120VAC, 1-5A, (P.G.E.)
1150-6X
120VAC, 1-5A, 2-3 Sec. T.D. on D.O.
1150-8X 120VAC,Same as 1150-2X with
2 N.O. Contacts
1150-10X
120VAC, 1-5A, 2 Sec. T.D.
1150-10SX
120VAC, 1-5A, 2 Sec. T.D., Hi-Shock
1150-11X
120VAC, 2.5-5A, 400Hz, Special T.D. Curve
1150-12X
120VAC, 2.5-5A, 60Hz, Special T.D. Curve
1150-14X
120VAC, 2.5-5A, 400Hz, T.D. Curve, Aux. N.O.
1150-15X
24VDC, 1.2-2.2A, 60Hz, T.D. Curve, (Solar)
1150-16X
24VDC, 2.5-4.3A, 60Hz, T.D. Curve, (Solar)
VOLTAGE RESTRAINT
1200X
120VAC, 1-5A, 24VDC Control
1200-1X
120VAC, 1-5A, 12VDC Control
1200-4X
120/208VAC, 1-5A, 3 Phase, 24VDC Control
1200-5X
120VAC, 1-5A, 3 Phase, 24VDC Control
1200-6X 120VAC, 1-5A, 3 Phase, 24VDC Control,
Suppression
1200-7X
120VAC, 1-5A, 1 Phase, 120VAC Control
1200-8HX
120VAC, 1-5A, 3 Phase, 125VDC Control
DC
1100DCX
120VAC, 10-50mV ext. Shunt, 5A Contacts
1100DC-1X
230VAC, 0-10VDC ext. Shunt, 5A Contacts
1100DC-2X 120VAC, 10-50mV ext. Shunt,
Transistor Output
1100DC-3X
120VAC, 0.2-0.6ADC with 0.125 ohm Shunt
1100DC-4X 28VDC, 10-50mV, Inverter, ext. Shunt,
2 Sec. T.D.
1100DC-6X 125VDC, 10-50mV, Inverter,
125VDC 3A Contacts
1100DC-7X 120VAC, 10-50mV, Inverter,
125VDC 3A Contacts
1100DC-8X
120VAC, isolated outputs
1100DC-9X 250VDC, 150mV Shunt, Hi-Shock,
+/- 20% Adj.
1100DC-10X
120VAC, 50-150mV
1100DC-11X 220VDC, 5-25mV, 1-25 Sec. T.D.,
Inverse Current
1100DC-13X
120VAC, 20-35mV, Hi-Shock
1100DC-15X
12VDC, 10-50mV, Inverter
1100DC-17X
74VDC, 10-50mV, Inverter
1100DC-20X
120VAC, Similar to 1100DCX except 4-25mV
PAGE 41
11
Protective Relays
1100X
120VAC, 1-5A Range
1100-1X
120VAC, 0.5-5A Range, Remote Adjust
1100-2X
120VAC, 0.5-5A Range
1100-2SX
120VAC, 0.5-5 A Range, Hi-Shock, 2A Contacts
1100-9X
120VAC, 1-5A, Fast Operating
1100-11X
120VAC, 1-5A, 3% Diff., Suppression 2.5KV
1100-13X
120VAC, 1-5A, 2 N.C. Contacts
1100-14X
120VAC, 7-30A, 2 N.C. Contacts
1100-15X
120VAC, 2-10A, 2 Sec. T.D.
1100-17X
120VAC, 1-5A, 2 Sec. T.D.
1100-18X
120VAC, 0.05-0.15A, 5A Max, 400 Hz
1100-19X
24VDC, 1-5A Range
1100-20X
120VAC, 1-5A, Suppression (15 times in-rush)
1100-21X
74VDC, 7-30A, 50mS T.D., Shock & Vibration
1100-22X
120VAC, 1-5A Remote Adjust
1100-23X 125VDC, 0.25-1.8A, 1 N.O.
125VDC 2A Contact
1100-24X
32VDC, 1-5AAC Range
1100-25X
120VAC, 0.25-1.25A
1100-26X
120VAC, 0.3-1.5A, Withstand 5A
1100-27X
220VAC, 1-5A Range, 220VAC Contacts
1100-32X 120VAC, Undercurrent 1-10A Adj,
0.2-5 Sec. T.D.
1100-35X
120VAC, 0.1-0.4A Range
1100-36X
74VDC, 4-20A, 50mS T.D., Shock & Vibration
1100-37X
24VDC, 0.1-0.3A Range
1100-38X
74VDC, Similar to WC1-74DC-5
1100TD-9X
24VDC, 0.5-5AAC Range, 0.5-20 Sec. T.D.
1100TD-10X 120VAC, Sim. to WCT1-120AC-5 w/
removable cover
1100TD-11X
120VAC, Sim. to WCT1-120AC-5, 1-5 Min. T.D.
1100TD-12X 120VAC, Sim. to WCT1-120AC-5,
0.5-5 Sec. T.D.
OPTION
1: 0.2A to 1.0A Range
2.5: 0.5A to 2.5A Range
5: 1.0A to 5.0A Range
10: 2.0A to 10.0A Range
Protective Relays
Additional Relays (Continued)
UNDERCURRENT RELAYS
21-693-1
21-693-2
Self Contained CT, 120VAC Control
Self Contained CT, 230VAC Control
2800-480 480VAC, Ph. Ang. 5-25 deg.,
UV: 70% D.O. 80% P.U.
2800-600 600VAC, Ph. Ang. 5-25 deg.,
UV: 70% D.O. 80% P.U.
CURRENT DIFFERENTIAL
1350X
24VDC, 0.1-0.5A Range
1350PX 24VDC, 0.1-0.5A Range, Suppression,
1 N.O. Contact
1350SX
24VDC, 0.1-0.5A Range, High Shock
1350-1X
24VDC, 0.1-0.5A Range, 1 N.C. Contact
1350-3X
48VDC, 0.1-0.5A Range
1351X
120VAC, 0.1-0.5A Range
1351PX
120VAC, 0.1-0.5A Range, Suppression
1351SX
120VAC, 0.1-0.5A Range, High Shock
1351-1X
120VAC, 0.1-0.5A Range, 1 N.C. Contact
1351-2X
120VAC, 2 Sec. T.D. on application of voltage
1351-4X 120VAC, 0.1-0.5A Range, Fast,
125VDC Contacts
PARALLELING (SYNCHRO-CHECK) RELAYS
1880X
1890X
SUFFIX
200VAC, 1 N.O. & 1 N.C. Contact
90VAC, 1 N.O. & N.C. Contact
“-A”: Two Normally Open Contacts
“-B”: Two Normally Closed Contacts
“-P”: Spike Suppression
“-7”: 0.025 Second Time Delay
“-9”: 125VDC 2A Contacts
“-13”: 0.250 Second Time Delay
1880DBX
1890DBX
SUFFIX
DEAD BUS TYPE
200VAC, 1 N.O. & 1 N.C. Contact
90VAC, 1 N.O. & 1 N.C. Contact
“-A”: 2 Normally Open Contacts
“-B”: 2 Normally Closed Contacts
“-S”: High Shock
“-2”: 2 N.O. Contacts, Cond. 5 same as 3
“-3”: Condition 1 reversed
“-5”: 12 deg. to 36 deg. adjustment
“-8” 3 Phase, Phase Sequence
“-9”: 125VDC 2A Contacts
“-12”: 25 Hz, 125VDC 3A Contacts
DOUBLE DEAD BUS (EITHER BUS DEAD)
1880DDBX
200VAC, 1 N.O. & 1 N.C. Contact
1890DDBX
90VAC, 1 N.O. & 1 N.C. Contact
SUFFIX
“-A”: 2 Normally Open Contacts
“-B”: 2 Normally Closed Contacts
“-9”: 125VDC Contacts; 2A res. , 1A ind.
DOUBLE DEAD BUS, UNDERVOLTAGE
2800-120 120VAC, Ph. Ang. 5-25 deg.,
UV: 70% D.O. 80% P.U.
2800-208 208VAC, Ph. Ang. 5-25 deg.,
UV: 70% D.O. 80% P.U.
2800-240 240VAC, Ph. Ang. 5-25 deg.,
UV: 70% D.O. 80% P.U.
2800-380 380VAC, Ph. Ang. 5-25 deg.,
UV: 70% D.O. 80% P.U.
2800-416 416VAC, Ph. Ang. 5-25 deg.,
UV: 70% D.O. 80% P.U.
2800-440 440VAC, Ph. Ang. 5-25 deg.,
UV: 70% D.O. 80% P.U.
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
2850X
2850-1X
PHASE BAND MONITOR
208/230/460 V, 5-60 deg. Range, 60 Hz
208/240/380/480 V, 5-45 deg. Range, 50/60 Hz
OVERFREQUENCY RELAYS
WOF-12-100110
23-050X
23-060X
23-400X
120VAC, 100-110 Hz. Range
SUFFIX “-1”: 0.2% Max. Differential
“-T”: 0.5-20 Sec. Time Delay
“-2T”: 60 Second Time Delay
“-S”: High Shock
120VAC, 50-60 Hz
120VAC, 60-70 Hz
120VAC, 400-450 Hz
UNDERFREQUENCY RELAYS
22-050X
22-060X
22-400X
120VAC, 50-60 Hz
120VAC, 60-70 Hz
120VAC, 400-450 Hz
FREQUENCY RELAYS (Over or Under)
25-050HX
120VAC, 40-50-60 Hz, 125VDC 3A Contacts
25-050SX
120VAC, 40-50-60 Hz, High Shock
25-050-1X
120VAC, 40-50-60 Hz, 2 N.C. Contacts
25-050-2X
120VAC, 40-50-60 Hz, 1.2 Sec. Time Delay
25-060HX
120VAC, 50-60-70 Hz, 125VDC 3A Contacts
25-060SX
120VAC, 50-60-70 Hz, High Shock
25-060-1X
120VAC, 50/60 Hz +/-10% on each Frequency
25-060-2X
120VAC, 50-60-70 Hz, 0.4 Hz Differential
25-060-3X
120VAC, 50-60-70 Hz, 2 N.C. Contacts
25-060-4X
120VAC, 50-60-70 Hz, 2 N.O. Contacts
25-060-5X
120VAC, 50-60-70 Hz, 2 N.O, 10A MIL-R-5757
25-060-7X 120VAC, EMD #9337150, Set 57.4 &
62.6 +/-0.6 Hz
25-060-8X
120VAC, 50-60-70 Hz, 1 Sec. T.D.
25-060-10X
120VAC, Spike Suppression
25-060-12X
104VAC, 50-60-70 Hz
25-060-14X
240VAC, 50-60-70
Hz 25-060-18X
120VAC, 50-60-70 Hz, 1 Sec. T.D., Suppression
25-060-19X 120VAC, 50-60-70 Hz, 0.5-10Sec. T.D.,
12VDC Ctrl.
25-060-20X 120VAC, 50-60-70 Hz, 0.5-10Sec. T.D.,
24VDC Ctrl.
25-100X
120VAC, 90-100-110 Hz
25-400X
120VAC, 350-400-450 Hz
25-400-2X 120VAC, 350-400-450 Hz,
220VAC 5A Contacts
25-400-5X
120VAC, 350-400-450 Hz, Suppression
25-025T-1HX 480VAC, 20-25-30 Hz, 0.5-20Sec T.D.,
125VDC 3A Contacts
25-025T-2HX 120VAC, 20-25-30 Hz, 0.5-20Sec. T.D.,
125VDC 3A Contacts
25-100T-1HX 480VAC, 90-100-110 Hz, 0.5-20Sec. T.D.,
125VDC 3A Contacts
20-040-1X
100VAC, 40-50 Hz
20-040-2X
120VAC, 40-50 Hz, 1.5-2.0 Sec. T.D.
Protective Relays
Additional Relays (Continued)
20-060-2PX
120VAC, Sim. to 20-060-2X w/ Suppression
20-060-4X
120VAC, 65-77 Hz
20-060-5X 120VAC, Jumper, Set at 60 Hz +3% or
50 Hz +3%
20-060-6X 120VAC, 103-156V Range, 60-70 Hz,
Set at 70 Hz
20-060-7X 120VAC, 60-63Hz, 0.2 Sec T.D. on P.U.,
Suppression
20-060-8X
120VAC, 60-70 Hz, Spike Suppression
20-060-9X 120VAC, 60-70 Hz, 0.25 Sec. Inverse T.D.
on P.U.
20-350X
120VAC, 350-500Hz
20-350SX 120VAC, 350-400Hz, 2 N.C. 2A Contacts,
Hi-Shock
20-350-2SX
115VAC, 350-400Hz, Hi-Shock
20-350-4X
120VAC, 300-400 Hz
20-400X
120VAC, 400-450 Hz
20-400SX
120VAC, 400-450 Hz, High Shock
20-400-2SX
115VAC, Hi-Shock
20-400-3X
120VAC, 400-450 Hz, 2 N.C. Contacts
20-400-4X
120VAC, 400-500 Hz
D20-040X
D20-050X
D20-050-2X
D20-060X
11
ADJUSTABLE DIFFERENTIAL
120VAC, 40-50 Hz
120VAC, 50-60 Hz
120VAC, P.U. 50-60 Hz, D.O. 40-50 Hz
120VAC, 60-70 Hz
VOLTAGE UNBALANCE RELAYS
1500X
1510X
1520X
1530X
1540X
1550X
120VAC, 3 Phase, 15% - 25% Adjustment
230VAC, 3 Phase, 15% - 25% Adjustment
380VAC, 3 Phase, 15% - 25% Adjustment
460VAC, 3 Phase, 15% - 25% Adjustment
575VAC, 3 Phase, 15% - 25% Adjustment
208VAC, 3 Phase, 15% - 25% Adjustment
SUFFIX “-2”: N.C. Contacts (Example: 1500-2X)
“-3”: 10% - 20% Adjustment
“-4”: Transient Suppression
“-H”: 125VDC 3A Contacts
PAGE 43
Protective Relays
20-040-3X
120VAC, 40-50 Hz, 2 N.C. Contacts
20-040-4X
220VAC, 40-50 Hz.
20-050-HX
120VAC, 50-60 Hz, 125VDC 3A Contacts
20-050SX
120VAC, 50-60 Hz, High Shock, MIL-S-901C
20-050-1X
120VAC, 50-60 Hz, 0.2 Sec. T.D.
20-050-2X
120VAC, 45-66 Hz, U.L.
20-050-3X
120VAC, 50-60 Hz, 2000V PIV Diode
20-050-4X
120VAC, 50-60 Hz, 1 Sec. T.D., 0.5% Drift
20-050-8X 120VAC, 57-60 Hz, 0.2 Hz Diff.,
240V Contacts, FAA
20-050-8PX 120VAC, Similar to 20-050-8X w/
Spike Suppression
20-050-9X
120VAC, 45-55 Hz
20-050-10X
120VAC, 50-60 Hz, Suppression
20-050-12X
120VAC, 50-60 Hz, 125VDC Contacts
20-050-13X
120VAC, 50-60 Hz, 2 Sec. T.D.
20-050-16X 150VAC, Similar to 20-050-10X except
Voltage
20-050-19X
120VAC, Volt./Freq., 45-60 Hz, 85-120V
20-050-19PX 120VAC, Similar to 20-050-19X w/
Suppression
20-050-20X
120VAC, 50-60 Hz, 2 N.C. Contacts
20-050-21X
220VAC, 50-60 Hz
20-050-22X 120VAC, 50-60 Hz, 125VDC Contacts,
Seismic
20-050-23X 240VAC, Similar to 20-050-19X except Voltage
20-050-23PX 240VAC, Similar to 20-050-23X w/Suppression
20-050-25X
104VAC, 50-60 Hz
20-050-26X 120VAC, 57-60 Hz, Supp., 0.2 Sec. T.D. on
D.O.
20-050-27X 120VAC, Sim. to 20-050-26X, Operation
Reversed
20-050-28X
120VAC, Sim. to 20-050-2X with Suppression
20-050-29X 120VAC, Sim. to 20-050-19X w/125VDC 2A
Contacts
20-050-30X 120VAC, Sim. to 20-050-1X w/125VDC 2A
Contacts
20-050-31X 200-480VAC, 50-60 Hz Range, 26VDC
Control
20-050-32X 120VAC, Sim. to WUF-12-5060T,
Operation Rev.
20-060-1X
120VAC, 60-70 Hz, 2000V Diode
20-060-2X 120VAC, 60-63 Hz, 0.2 Hz Diff., 240VAC
Contacts
Protective Relays
Engineering Notes
AEROSPACE, DEFENSE & MARINE /// HIGH PERFORMANCE RELAYS
