400W AC/DC Power Supply Suits Railway and other Extreme Environments0 pages

400W, Encapsulated AC/DC Power Supply for Railway and other Heavy Duty Environments
POL 400R Series
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Rugged, field-proven design
Full encapsulation
Wide temperature range
Full electronic protection
N+1 redundancy by built in diode on request

This fully encapsulated, railway quality AC/DC power supply delivers 400W output
power. The design is based on field-proven topology with a track-record in
numerous applications. An optional built-in redundancy diode allows for parallel and N+1 operation. This converter is entirely potted
with a thermally conductive MIL-grade silicon rubber compound to ensure immunity to shock, vibration and humidity. It is conduction
cooled via a base plate to a heat-sinking surface. Low component count, large design headroom, and the use of components with
established reliability result in a high MTBF. The unit meets relevant sections of EN50155 for electronic equipment used on rolling
stock. It is also suitable for transportation, mining, oilrigs, military and other harsh environments. The converter is manufactured at
our plant under strict quality control. Customized versions are also available.

SPECIFICATIONS
Standard Input Voltage & Range
115Vac (97‐132Vac) 47-63Hz, or
230Vac (195-264V), 47-63Hz
Consult factory for other voltages
and ranges
Input Protection
Inrush current limiting
Varistor
Internal safety fuse
Lower voltage than specified
minimum input will not damage
unit
Isolation
1500Vdc input to chassis
3000Vdc input to output
1500Vdc output to chassis
Standards
Meets EN60950 and relevant
sections of EN50155
Immunity
Meets criteria of relevant sections
of EN50155 and EN50121-3-2
including:
EN61000-4-2 (ESD)
EN61000-4-3 (RF Immunity)
EN61000-4-4 (Fast transients)
EN50155
(Surge)
EN61000-4-6 (Conducted Imm.)
EN50155 (Voltage Variations)
EMI
EN55022 Class B and EN50121-3-2
Conducted and radiated
Hold Up Time
Min. 5ms at nominal input for 5%
drop of the output voltage

Switching Frequency
55kHz ±3kHz
Standard Output Voltages
12Vdc/33A, 24Vdc/17A,
36Vdc/12A or 48Vdc/9A or
110Vdc/3A
Outputs are floating; either
terminal can be grounded
Consult factory for other outputs

Efficiency
80 to 90% depending on
input/output configuration
Operating Temperature Range
-40 to +70oC cold plate temperature
for full specification
Temperature Drift
0.03% per ºC over operating
temperature range

Redundancy Diode
Not installed
Available on request

Cooling
Conduction cooling via base plate
to customer chassis or heat-sink

Line/Load Regulation
± 1% combined from zero load
to full load on each output

Environmental Protection
Full encapsulation with thermally
conductive silicon potting
compound with UL94V-0
flammability rating

Dynamic Response
Max 5% voltage deviation for 10%
to 50% load step, with better than
1msec recovery time
Output Ripple/Noise
Less than 1% peak-to-peak or
0.2% RMS of the output voltage
(20MHz BW)
Output Overload Protection
Rectangular current limiting with
short-circuit protection (no hiccup)
Thermal shutdown with automatic
recovery in case of insufficient
cooling

Shock/Vibration
IEC 61373 Cat 1 A&B
Humidity
5 – 95% non-condensing
MTBF
140,000 hours @ 45 oC
Demonstrated MTBF is
significantly higher

Indicators
None
Optional ’ON’ LED adapter can be
installed on the terminal block.
Control Input
None
Enable or inhibit input as option
Alarm Output
None
Available on request
Package/Dimensions (W x H x L)
P400: 131 x 66 x 232mm
(5.2" x 2.6" x 9.2") including
terminal block and flanges
Mounting holes are clear
Weight
2.2 kg (4.9 lb)
Connections
12-pole barrier type terminal block
RoHS Compliance
Fully compliant
Warranty
Two years subject to application
within good engineering practice

Terminal Block Pin-out

Output Overvoltage Protection
Second regulator loop completely
stable and independent of main
regulator loop

Enhancements to these general specifications and customizing can be accommodated upon request. Specifications are subject to change.
Designer and manufacturer of quality ac-dc power supplies and battery chargers, converters, inverters, dc-output 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
For further information, please see:
May 23, 2012/TS/CL
http://www.absopulse.com/Absopulse_railway_mobile_extreme_environment_solutions.php

Made in Canada