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 |
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