AC to Regulated 28VDC Power Converter 1200 Watt

AC TO DC REGULATED POWER CONVERTER
FAA TSO-C71

The WH120 DC power supply converts 115/200 VAC, 4 wire Wye, 400 Hz 3 phase input to a regulated 28 VDC up to 1200 watt maximum continuous output.

Design features include off line rectification, a pulse width modulated DC to DC step down voltage conversion and a rugged, high power IGBT power module for reliable and lightweight operation.

The WH120 is FAA TSO-C71 recognized and is designed for the operation of airborne and ground vehicle equipment and lighting systems requiring regulated 28 VDC.

Model WH120

Specifications:
Input Voltage:	115/200 VAC ± 10 VAC. 3 phase
Input Frequency:	400 Hz ± 100 Hz
Input Current:	4.2 amps per phase
Output Voltage:	28 VDC ± .2 VDC
Output Current:	42 ADC
Output Ripple:	200 mVpp nominal at 1200 Watts.
Output Power:	1200 Watts maximum continuous.
Response Time:	NL to FL; 2 mSec typical, FL to NL; 10 mSec typical
Regulation:	Line; 1.5% typical, Load; 1.5% typical
Efficiency:	80% typical at full Load.
Overload Capacity:	120% Output current overload for atleast 5 minutes.
Overshoot:	FL to NL; +2 Vpk.
Undershoot:	NL to FL; -10 Vpk.
Protection Circuits:	The unit withstands without damage or degradation loads exceeding 120% of full load and an output short circuit. The unit delivers rated output upon removal of the output short.
Remote On/Off:	Yes (Grounded to ON)
Temperature:	-55°C to +71°C (-65°F to 160°F)
Altitude:	55,000 ft.
Cooling:	Thermostatically controlled brushless fan.
Weight:	8.0 lbs maximum.
Compliance:	FAA TSO-C71

Specifications:

OUTLINE DRAWING

EXTERNAL WIRING