Input Specifications
Parameter
Conditions
Min
Typ
Max
Units
Operating Range
47-63 Hz
90
264
VAC
Inrush Current Limiting
120 VAC, cold start
240 VAC, cold start
30
60
APK
APK
%
Efficiency
Nominal line and full load
75
Power Factor Correction (PFC)
0.99
Meets IEC 1000-4-7/EN61000-3-2 (formerly IEC 555-2)
ReverseVoltage Protection
All outputs are protected to rated load current.
Remote Sense
Remote Sense is provided on Output #1 and will
compensate for 1.0V of line drop. Remote Sense leads are
protected against open, short and reversal.
Power Fail Signal
Upon AC input voltage removal, the power fail signal drops
to logic zero at least 10msec before loss of DC output.
Upon AC input turn-on, signal remains low until outputs are
in regulation. Consult the factory for other options.
Remote On/Off
The power supply is turned on with aTTL logic‘1’(or open)
signal and turned off by a switch closure or TTL logic ‘0’
referenced to (-) sense terminal. Consult the factory for other
options.
N+1 Load Share (PX402)
Output #1 has active load sharing circuitry. Units will load
share within 1% of the Maximum Rated Load.
OverVoltage Protection
OverTemperature Protection
Output #1: 6.5V, 0.5 VDC
Thermal switch turns off power supply if overheating occurs
and automatically restarts.
The power supply will latch off until AC power is cycled.
Over Current Protection
Individual current limit on all outputs. Automatic recovery
Safety
UL Recognized: UL File Number E14675 (1950 & 1012)
CSA Certified: CSA File Number LR 9070-154C
(C22.2 No9. 234-M90, Level 6)
upon fault removal.
Transient Response
The peak output voltage excursion will not exceed 2% and
will recover within 1% in 200 μsec for a 25% step load.
TUV License Number: R9576029 (EN60950) (IEC950)
Cooling
Output Isolation
All outputs are fully isolated.
The unit is designed to operate with 40 CFM of airflow.
Page 2
PX400/402 4/98 REV B