(28 Vdc to 400Hz Sinewave)


  • The SC3 & SC3(A) are pulse width modulated dc to ac static inverters that provide regulated 400 Hz AC power up to 30 volt amperes.
  • An internal trim pot is provided to adjust the output voltage ± 10%
  • Circuit protection includes low input voltage shutdown, soft start, high input voltage shutdown, output over voltage limit and output short circuit current limit

Input Voltage: 28 Vdc NOM., 24 to 32 Vdc
  18 Vdc to 36.4 Vdc (Abnormal Range)
Input Current: 1.35 Amps typ at 28 Vdc input at FL
  0.6 Amps maximum at no load
Output Voltage: SC3:    115 Vac 
SC3(A):  26Vac
Output Current: SC3:    .26 Amps continuous 
SC3(A):  1.15 Amps Continuous
Frequency: 400 Hz ± 1%
Distortion (THD): 3% typical at FL (unity pf) at 28 Vdc 7% maximum for the input range & pf
Isolation: Output is isolated from input
Power 30 VA maximum
Power Factor: .95 leading to .8 lagging power factor
Regulation: 3% for load, 2% for line and 3% for temperature
Overload(OL): Deliver 150% output current for 5 min.
Protection(OL): Withstands without damage or degradation load exceeding 150% to an output short circuit. Unit delivers rated output power upon removal of the overload condition
Protection(SC): Under a output short circuit condition, the input current folds back and the output current is limited to a safe value
Protection(OV): Output voltage is limited to 145 Vac maximum
Soft-Start: Minimum soft start delay of 100 mSec at full load is provided during an application of step input voltage to reduce output in rush current.
Shutdown(SD): Output shuts down when input voltage is below 14 Vdc and above 36.4 Vdc.
Temperature: -55° C to +71° C
Altitude: 55,000FT
Compliance: FAA TSO-C73
Connector: Unit mates with MS3106A14-6S
Finish: Gold iridite per MIL-C-5541 Class 1A
Weight: 1 LBS (454 grams)
Size: 2.00 H x 3.18 W x 5.00 L inches
50.8 H x 80.8 W x 127.0 L mm
(Less protrusion of connector and screw heads)


Outline Drawing | External Wiring