PX500 1/98 REV A

Page 2

Input Specifications

Parameter

Conditions

Min

Typ

Max

Units

Operating Range

47-63 Hz

90

264

Inrush Current Limiting

30

70

Efficiency

70%

75%

Power Factor Correction (PFC)

0.99

Meets IEC 1000-4-7/EN61000-2-3 (formerly IEC 555-2)

Remote Sense

Remote Sense is provided on Output #1 and will com-

pensate for 1.0V of line drop. Remote Sense leads are

protected against open, short and reversal.

Remote On/Off (Optional)

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 400

µsec for a 25% step load.

Output Isolation

All outputs are fully isolated.

N+1 Load Share

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

share within 1.0% of Maximum Rated Load.

Power Fail Signal

Upon AC input voltage removal, the power fail signal

drops to logic zero at least 5msec before loss of DC

output. Upon AC input turn-on, signal remains low until

outputs are in regulation. Consult the factory for other

options.

Over Temperature Protection

Internal thermal switch turns off power supply if over-

heating occurs and automatically restarts. Automatic

restart when temperature drops below threshold.

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: R9576030 (EN60950) (IEC950)

Cooling

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