Custom Power Supplies
Custom Industrial Power Supplies

Aircraft Power Supply
Wide Range Variable Input Frequency
280 watt, Single Output

Product Description

280 watt, single output, power factor controlled power supply designed to meet the most stringent airborne requirements for variable frequency 115Vac generator systems.

Features280 Watt, Single Output Power Supply

  • 280 Watts, Single Output, 28Vdc @ 10A
  • Wide Frequency Range of 360-800Hz
  • Exceeds Boeing Spec: D6-44588 (AA) for PFC and Input Harmonic Distortion @ 360-800Hz
  • Complies with Boeing’s RTCA/DO-160D EMI & Susceptibility
  • Airbus’s ABD0100.1.8 issue D for Power Factor and Input Current Harmonic Distortion Levels
Input
  • Voltage Input Range: 97-134VAC (nominal range)
  • Frequency: 360-800Hz
  • Phase: Single Phase, 2 wire plus ground
  • Inrush Current: <5A (Cold Start)
  • Leakage Current: <5mA (AC Line/Neutral to Chassis at 115Vac, 400Hz)
  • Total Harmonic Distortion: <3.5% (Input current for power output> 280 watts)
  • Crest Factor: 1.314-1.514 (Ratio of peak/RMS current)
  • Start-Up Time: <500mSec (Output within regulation)
  • Input Surge Voltage: Input transient suppression circuitry to protect power supply from permanent damage.
  • Input Protection: Internal fast blow 2A fuse

Output

  • Output Power: 280W
  • Output Voltage: 28Vdc
  • Output Current: 10.0A Continuous (No minimum loading required)
  • Line Regulation: +/-2.0% Typical
  • Load Regulation: ±2.0% Typical (No load to full load; nominal input)
  • Output Ripple/Noise: 300mV Typical (P-P; nominal input; full load; 20MHz bandwidth)
  • Set Point Accuracy: ± 1.0% of Output Voltage (Nominal input; full load; 25°C)
  • Transient Response: Output voltage returns to within 1% in less than 2.5mS for a 50% load change and the peak transient does not excess 5%.
  • Overshoot: Turn-on and turn-off overshoot should not exceed 5% over nominal voltage.
Electrical Characteristics
  • Efficiency: 75% Minimum (Measuring at 115Vac and full load)
  • Turn On Delay:1 second maximum at 120 VAC
  • Hold-Up Time: Minimum 200mS at loss of AC power at low line, full load.
  • Isolation Voltage:
    • Input to Output: 3000Vrms
    • Input to Chassis: 1500Vrms
    • Output to Chassis: 500Vrms
  • Isolation Resistance: 10Mohms (Input to output)
  • Temperature Regulation: +/-2.0%/ºC (+/-.005%/ ºC max; over operating temp range)

Protection

  • Over Current Limit: ~115 to 120% Auto-Recovery after removal of overload condition.
  • Over-Voltage Setpoint: ~32.2Vdc Typical. Unit latched 1 minute, recycle AC input to reset at 25°C.
  • Short Circuit: Auto-Recovery after short circuit condition is removed.
  • Over temperature Protection: The power supply is protected for over temperature conditions with thermal shutdown. Auto-Recovery when temperature returns to normal.
Environmental
  • Operating Temperature: -15º to +55º C (Convection)
  • Storage Temperature: -25º to 85º C
  • Operating Humidity: 5% to 90% RH, Non-condensing
  • Storage Humidity: 5% to 95% RH, Non-condensing
  • Operating Altitude: Sea-level to 40,000 ft. in pressurized environment
  • Vibration: Operating: From 5 to 27 Hz, 0.02 in double amplitude; from 27 Hz to 500 Hz, 0.75G, 3 Axes, 3 min per octave sweep, dwell 15 min at resonance. Non-operating: From 5 to 17 Hz, 0.10 in double amplitude, from 17 to 500Hz, 1.5G peak; 3 axes, 5 min per octave sweep; dwell 15 min at resonance.
  • Shock: Operating: 5G, half sine, 11msec, 3 axes. Non-Operating: 15G, half sine, 11msec, 3 axes.
  • Conducted EMI: RTCA/DO-160D Category H
  • Cooling: Convection or Conduction Cooled

Mechanical

  • Outline Dimensions: ~5.0" X 12.0" X 2.5" (W X L X H) – Heat sink not included
  • Weight: ~3.0 lbs.
  • AC Input Connector
  • Output Connector
  • I/O Interface
  • Heatsink or Coldplate Required
Controls and Alarms
  • Remote On/Off Control: N/A
  • LED “On” Status Signal: N/A
  • Input Power “Good” Signal: N/A
  • DC Good Signal: N/A

Notes

  • Unless otherwise specified the following test conditions apply: Ta = 25°C, constant active load applied to output, Vin = 115Vrms, 360Hz to 800Hz, <1.25% sinusoid.
  • Some specifications have not been tested for actual compliance and can not be guaranteed to meet 100% compliance during system testing.
  • Complies with DO-160D, Section 16, change number 2 for A(WF) equipment, however, when operating at 47-360Hz frequency range, will reduce distortion performance of unit.
  • Product specifications subject to change without notice.
  • All rights reserved. Contents of this document may not be reproduced in any form without the prior written permission of DSC Power Solutions.
  • The information and specifications contained in this document are believed to be correct and accurate at the time of publication. DSC Power Solutions, Inc. accepts no responsibility for consequences arising from printing errors or inaccuracies pertaining to any use or application of this document.

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