NX301 3/98 REV B

Page 2

Input Specifications

Remote Sense

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.

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% load step

change.

Output Isolation

All outputs are fully isolated.

Power Fail Signal

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.

N + 1 Load Share

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

share within 1.5% of Maximum Rated Load.

Over Temperature 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 No. 234-M90, Level 6)

TUV License Number: R9576031 (EN60950) (IEC950)

Cooling

The unit is designed to operate with 30 CFM of airflow.

Parameter

Conditions

Min

Typ

Max

Units

Operating Range

47-63 Hz

90

264

Inrush Current Limiting

35

70

Efficiency

120V

120V, full load

70

%

240V

240V, full load

75

%

Power Factor Correction (PFC)

0.99

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