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.
