AC-DC Power Supply | 4 Isolated Outputs | Engineering & Product Test Laboratories0 pages

2.5kW, Heavy Duty, AC/DC Lab Power Supply with 4 Isolated 12Vdc/50A Outputs
LPS 2K5-U/4x12CT
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Electronic power factor correction (PFC)
Rugged industrial quality
Four isolated outputs
Cooling by two high quality built in fans
Full electronic protection
Field-proven design

This 2.5kW heavy-duty, industrial grade AC/DC power supply with power factor corrected input was developed to generate voltages
in the 12V to 48Vdc range with high current for laboratory and engineering applications. The system is built with four galvanically
isolated internal modules. Each module provides a 12Vdc/50A floating output and can be connected in series or in parallel in any
combination from 12V/200A to 48V/50A. In addition, several LPS 2K5 units can be combined to generate voltages of up to 7.5kW
power. The power supply accepts a universal AC-input voltage (95V to 264Vac). The preferred input voltage is 230Vac for full output
power. If the unit is plugged into a standard 115V output, the output power is limited to 1500W by the capacity of the outlet. Each
module is equipped with an ON/OFF switch, which allows a gradual increase in output power. A 20A input breaker on the AC-input
can also be used as the main ON/OFF switch for the entire system. Built-in fans provide sufficient airflow for operation at the
specified temperature without de-rating. The fans on the rear side draw air into the unit and the exhaust exits at the rear of the unit.
Large design headroom and the exclusive use of components with established reliability contribute to high MTBF. This versatile
power supply can also be used as a battery replacer with paralleled outputs (12V/200A). The unit is manufactured at our plant under
strict quality control.

SPECIFICATIONS

Input Voltage
95-264Vac (Universal) 47… 63Hz
Input Current: 15Arms max at 190V
input, full load
Power Factor is better than 0.97 at
full load for the entire input range.
Meets EN61000-3-2 and -12
Input Protection
Inrush current limiting
Varistor
Internal safety fuse
Lower voltage than the specified
minimum input will not damage
the unit
Isolation
2250VDC input to chassis
4300VDC input to output
8mm spacing
1000VDC output to chassis
Standards
Designed to meet EN60950-1
and related standards.
EMI
EN 55022 Class A with margins
Switching Frequency
50-150kHz, load dependent
Hold-Up Time
Minimum 5ms at full load for 5%
drop of output voltage at nominal
input

Output Voltage/Current
12V ± 0.1V/50A on all four outputs
Outputs are floating; they can be
connected in series or parallel
Consult factory for other outputs

Efficiency
Typically 80% at full load

Redundancy Diodes
None

Temperature Drift
0.03% per o C over operating
temperature range

Line/Load Regulation
±1% combined from zero load to
full load
Dynamic Response
Max 5% voltage deviation for 10%
to 50% load step, with better than
1msec recovery time
Output Ripple/Noise
Better than 40mVrms or 200mVpp
on each 12V output (20MHz BW)
Overload Protection
Rectangular current limiting with
short-circuit protection (non-hiccup
type)
Thermal shutdown on each module
in case of insufficient cooling (self
resetting)
Output Overvoltage Protection
Second regulator loop, completely
stable and independent of main
regulator loop
OVP limit: 14V ± 1V

Operating Temperature
0ºC to 50ºC for full specification

Cooling
By high quality internal fans,
drawing air into the unit
Environmental Protection
Ruggedizing
Conformal coating
Shock/Vibration
IEC 61373 Cat 1 A&B
Humidity
5-95% non-condensing
MTBF
Min 140,000 hours @45ºC
on each module
Demonstrated MTBF is
significantly higher.
Fans are not included.

Indicators
Green “Output ON” LED visible
through cooling slots
Controls
None
Alarm Output
None
Package/Dimensions (W x H x D)
U11713: 334 x 189 x 317 mm
13.2” x 7.45” x 12.5”
(depth incl. connectors)
Weight
Approx. 10kg (22 lb)
Connections
Input: AWG 16 Line cord
Output: Threaded studs 1/4” 20NC
RoHS Compliance
Fully compliant
Warranty
Two years subject to application
within good engineering practice
Contamination related failures,
fans and shipping costs exclude

Please note that the above specifications set only generic guidelines for the design.
Customizing and enhancements are possible. Please contact us with your specific requirements.
Designer and manufacturer of quality converters, inverters, UPS systems, complete rack mount systems
and DC-input fluorescent lamp inverters since 1982. Custom or standard. Absopulse is a BABT-approved Facility
ABSOPULSE ELECTRONICS LTD
110 Walgreen Road, Ottawa. Ontario. K0A 1L0. CANADA
Tel: +1-613-836-3511 | Fax: +1-613-836-7488
E-mail: absopulse@absopulse.com | http://www.absopulse.com
Binder Section: AC/DC Power Supplies
http://www.absopulse.com/Absopulse_powersystems.php

November 11, 2013/TS/CL

Made in Canada