Input Specifications
Parameter
Conditions
Min
Typ
Max
Units
Operating Range
47-63 Hz
90
264
VAC
Inrush Current Limiting
120VAC, cold start
240VAC, cold start
35
70
APK
APK
Efficiency
120V
120V, full load
240V, full load
70
75
%
240V
%
Power Factor Correction (PFC)
0.99
Meets IEC 1000-4-7/EN61000-3-2 (formerly IEC 555-2)
Remote Sense
Power Fail Signal
Remote Sense is provided on Output #1 and will
compensate for 0.7V of line drop. Remote Sense leads
are protected against open, short and reversal.
Upon AC input voltage removal, the power fail signal drops
to logic zero at least 5msec before loss of DC output. On
AC input turn-on, signal remains low until outputs are in
regulation. Consult the factory for other options.
Remote On/Off
N + 1 Load Share
Output #1 has active load sharing circuitry. Units will load
share within 1.5% of Maximum Rated Load.
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.
Over Temperature Protection
Thermal switch turns off power supply if overheating occurs
and automatically restarts.
Over Voltage Protection
Output #1: 6.5V ± 0.5 VDC.
The power supply will latch off until AC power is cycled.
Safety
UL Recognized: UL File Number E14675 (1950 & 1012)
CSA Certified: CSA File Number LR 9070-154C
(C22.2 No. 234-M90, Level 6)
Over Current Protection
Individual current limit on all outputs. Automatic recovery
upon fault removal.
TUV License Number: R9576031 (EN60950) (IEC950)
Transient Response
The peak output voltage excursion will not exceed 2% and
will recover within 1% in 200 µsec for a 25% load step
change.
Cooling
The unit is designed to operate with 30 CFM of airflow.
Output Isolation
All outputs are fully isolated.
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NX301 3/98 REV B
