SX400 2/98 REV A

Page 2

Input Specifications

Remote Sense

Remote Sense is provided and will compensate 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

Output #1: 15% of nominal voltage is typical.

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

Over Current Protection

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.

Reverse Voltage Protection

The output is protected to rated load.

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 output is in

regulation. Consult the factory for other options.

N+1 Load Share

Output has active load sharing circuitry. Units will load

share within 1% of the Maximum Rated Load.

Over Temperature Protection

Thermal switch turns off power supply if overheating occurs

and automatically restarts.

Safety

UL Recognized: UL File Number E13164 (1950)

CSA Certified: CSA File Number LR 9070C

(C22.2 No950, Level 6)

TUV License Number: R9773309 (EN60950) (IEC950)

Cooling

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

DC Power Good Signal

The signal is activated by a ±10% loss of regulation Active

low or high; TTL Level; common with (-) sense. Consult the

factory for other options.

Parameter

Conditions

Min

Typ

Max

Units

Operating Range

47-63 Hz

90

264

Inrush Current Limiting

Thermistor

30

60

Active Current Limit

19

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)