LDT Series are high power switching mode power supplies with 3
phase input 340 – 550 VAC, for powers from 480 to 2400 W, covering
from 12 to 170 V (model dependent).
Their compact size, high efficiency and excellent reliability together
with easy installation due to pluggable connectors make them fit
demanding applications where compactness and high power are
needed.
LDT Series are Class I isolation devices suitable for SELV and PELV
circuitry and are designed to be mounted on DIN rail and installed
inside a protective enclosure.
3 phase AC input: 3x 340 – 550 VAC
150% overload capability
High efficiency up to 92%
Up to 45°C operating temperature with no dating
Compactness
Continuity of operation if one phase is lost (model dependent)
User settable current limitation algorithm (Hiccup or Constant Current)
Easy parallelable for power increase
Multiple protections
Low noise thermal regulated 60 mm fan
Automation
Process Control
Communication
Instrumentation Equipment
LDT960 Series
2
LDT960-24
400 - 500 VAC / 520 - 725 VDC
3
23 - 28 VDC
40 A
LDT960-48
400 - 500 VAC / 520 - 725 VDC
3
45 - 55 VDC
20 A
LDT960-72
400 - 500 VAC / 520 - 725 VDC
3
72 – 85 VDC
13.3 A
Specifications are measured at 25°C, at 400 VAC, typical unless otherwise stated.
Input AC Voltage
3 phases (UL certified)
400 – 500 VAC (Range 340- 550 VAC)
Input DC Voltage
500 – 725 VDC
Input Frequency
47 - 63 Hz
Vin = 400 VAC
Vin = 500 VAC
Vin = 520 VAC
Vin = 725 VAC
Input AC Current
Input DC Current
Inrush Peak Current
< 50 A
Internal Protection Fuse
None, external fuse must be provided
External Protection on AC Line
It is strongly recommended to provide external surge
arresters (SPD) according to local regulations
Output Power
Rated Voltage (Adjustable Voltage Range)
Continuous Current
Overload Limit
Short Circuit Peak Current
Load Regulation
2.4 A
2.1 A
2.2 A
1.7 A
Fuse AT 10A or MCB 10A C curve
960 W
LDT960-24
LDT960-48
LDT960-72
LDT960-24
LDT960-48
LDT960-72
LDT960-24
LDT960-48
LDT960-72
LDT960-24
LDT960-48
LDT960-72
LDT960-24
LDT960-48
LDT960-72
24 VDC (23 – 28 VDC)
48 VDC (45 – 55 VDC)
72 VDC (72 – 85 VDC)
40 A
20 A
13.3 A
44 A
22 A
15 A
60 A
30 A
20 A
≤ 1.0%
≤ 0.5%
≤ 0.5%
Ripple & Noise
≤ 100 mVpp
Hold up Time
> 15 ms
User Interface
Efficiency
Green LED
Red LED
Current limitation mode jumper
Dry contact
LDT960-24
LDT960-48
LDT960-72
DC OK
Overload
1 A / 30 V
> 90.5%
> 92.5%
> 93%
tech.support@psbel.com
LDT960 Series
Dissipated Power
Output Over Voltage Protection
Protections
3
LDT960-24
LDT960-48
LDT960-72
LDT960-24
LDT960-48
LDT960-72
Overload, short circuit, with constant current or
hiccup mode (user settable)
Thermal protection
< 101 W
< 78 W
< 73 W
> 33 VDC
> 68 VDC
> 100 VDC
Parallel Connection
Up to 4 units for increased power
Redundancy
With external ORing module
Note: Power rating, losses, efficiency, ripple, thermal behavior may change outside of the nominal rated input range. Contact factory for details.
Operating Temperature
Over temperature protection, UL certified up to 45°C
(Start-up type tested: - 40°C)
Storage Temperature
- 40 to + 80°C
Derating
- 15.0W/°C over 45°C
Humidity
Non-condensing
5 - 95% RH
Overvoltage Category
Pollution Degree
EMC Emission
EMC Standards
EMC Immunity
Standards & Approvals
Isolation Voltage
III
2 (IEC 664-1)
Class A
Class A
Level 3
Level 3
Level 3
Level 4
Level 2
EN55022:2010 (CISPR22)
EN55011:2009 /A1:2010
EN61000-4-2:2008
EN61000-4-3:2006 /A2:2010
EN61000-4-4:2012
EN61000-4-5:2014
EN61000-4-11:2004 /A1:2010
UL508 (certified)
EN60950 (reference)
Input to Output
Input to Ground
Output to Ground
Protection Degree
According to EN60529
Vibration sinusoidal
IEC 60068-2-6:2007
Shock
- 40 to + 70°C
4.2 kVDC
2.2 kVDC
0.75 kVDC
IP20
5-17.8 Hz: ±1.6 mm; 17.8-500 Hz: 2g 2Hours /
axis (X,Y,Z)
30 g 6 ms, 20 g 11 ms;
3 bumps / direction, 18 bumps total)
IEC 60068-2-27:2008
INPUT CONNECTION
3 phase:
L1 = Phase 1
L2 = Phase 2
L3 = Phase 3
I = Earth ground
DC:
L1 = +/L2 = -/+
L3 = do not connect
I = Earth ground
OUTPUT CONNECTION
+ = Positive DC
- = Negative DC
Dry contact = NC
1
AC/DC input
2
4
DC output (load)
Status Output
(dry contact, NC output OK)
Green LED: Output OK
5
Red LED: Overload
6
Output voltage adjustment
7
Selectable limitation mode
3
Europe, Middle East
+353 61 225 977
North America
+1 408 785 5200
© 2016 Bel Power Solutions & Protection
BCD.00XXX_AA
Asia-Pacific
+86 755 298 85888
LDT960 Series
4
Weight
1.3 kg
Dimensions
80.0 x 127.0 x 137.5 mm
Mounting Rail
IEC 60715/H15/TH35-7.5(-15)
Connection Terminals
Screw type (16 – 10 AWG)
Screw type (10 – 6 AWG) ) for output on 24V model
Case Material
Aluminum
1.5 – 6 mm2
6 - 16 mm2
Figure 1. Mechanical Drawing
NUCLEAR AND MEDICAL APPLICATIONS - Products are not designed or intended for use as critical components in life support systems,
equipment used in hazardous environments, or nuclear control systems.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the
date manufactured. Specifications are subject to change without notice.
tech.support@psbel.com
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