PX400/402 4/98 REV B

Page 2

Input Specifications

Parameter

Conditions

Min

Typ

Max

Units

Operating Range

47-63 Hz

90

264

Inrush Current Limiting

30

60

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)

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.

Remote On/Off

The power supply is turned on with a TTL 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 Voltage Protection

The power supply will latch off until AC power is cycled.

Over Current Protection

Individual current limit on all outputs. Automatic recovery

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.

Output Isolation

All outputs are fully isolated.

Reverse Voltage Protection

All outputs are protected to rated load current.

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.

N+1 Load Share (PX402)

Output #1 has active load sharing circuitry. Units will load

share within 1% of the Maximum Rated Load.

OverTemperature Protection

Thermal switch turns off power supply if overheating occurs

and automatically restarts.

Safety

UL Recognized: UL File Number E14675 (1950 & 1012)

CSA Certified:

CSA File Number LR 9070-154C

(C22.2 No9. 234-M90, Level 6)

TUV License Number: R9576029 (EN60950) (IEC950)

Cooling

The unit is designed to operate with 40 CFM of airflow.