1870X

Paralleling Relays WILMAR™ Protective Relays – 1800 Series Function: 25 • ANSI/IEEE C37.90-1978 • UL file No. E58048 • CSA file No. LR61158 #6 - 32 STUDS 6 PLACES 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. 3 Note: Dimensions in inches. Multiply values by 25.4 for dimensions in mm. Part Number Sensing Voltage ............................. Line Frequency ............................... Pick-Up Adjustment ....................... Time Delay ..................................... Output Contacts ............................. 4 1 /2 4 7 /8 4 7 /8 3 5 /8 4 11/64" DIA. 4 MTG. HOLES PRODUCT SPECIFICATIONS 1800 Series 120 V, 230 V, 277 V, 380 V, 460 V, 575 V, & 415 V 50-500 Hz External adjustment for field sensing of 10-30% of nominal input voltage. (Vertical voltage differential of 6 to 18 electrical degrees). Fixed @ 60 milliseconds is provided to assure that the frequencies of both input lines are sufficiently close to permit paralleling within the preset window. One set N.O., one set N.C. 5 amp resistive at 120 VAC or 28 VDC 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 Consult factory for additional models and options. 36 Tyco Electronics / www.tycoelectronics.com / Factory Direct Technical Support: 800-253-4560, ext. 2023 (U.S., Canada, Mexico) or 805-220-2020, ext. 2023 (International) Paralleling Relays Selection Guide (Typical Applications) Sensing Voltage Series 1800 Generator to Generator Permits paralleling of two generators only when they are "on-line" and their voltages are equal and in phase (synchronized) Series 1800DB Generator to Bus 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" 1810DBX 1820DBX 1830DBX 1840DBX 1850DBX 1860DBX 1870DBX Series 1800DDB Bus to Bus 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" Function: 120 Volts 230 Volts 380 Volts 460 Volts 575 Volts 415 Volts 277 Volts 1810X 1820X 1830X 1840X 1850X 1860X 1870X 1810DDBX 1820DDBX 1830DDBX 1840DDBX 1850DDBX 1860DDBX 1870DDBX Condition Series 1800 Contacts Synch. N.C. N.O. Series 1800DB Contacts N.C. N.O. Series 1800DDB Contacts N.C. N.O. Energized Line 1 1 Line 2 Line 1 2 Line 2 Line 1 3 Line 2 Line 1 4 Line 2 Line 1 5 Line 2 X X X X X X Not Energized Open Yes No Close No Close Open Close Open Close Open Close Open Close Open Close X X Close X X Close Open Open Close Open Close Open Close Open Close Open Open Close Open Open Close Output Contact Options: 1. Two Form A. (Add -A to Model Number) 2. Two Form B. (Add -B to Model Number) Tyco Electronics / www.tycoelectronics.com / Factory Direct Technical Support: 800-253-4560, ext. 2023 (U.S., Canada, Mexico) or 805-220-2020, ext. 2023 (International) 37