SPC-75( )

750 VA

The SPC-75( ) static inverter utilizes solid state circuitry to convert 28 VDC to 115 VAC, 400 Hz sine wave power. Design features include transformerless square to sine power conversion permitting light weight and reliable operation. The SPC-75( ) is capable of delivering an overload of 150% of rated power for a duration not less than five minutes under all environmental conditions.


  • Foldback current limit during overload.
  • 200% output current capability for fault clearance.
  • Remote on-off feature to eliminate the need for a heavy and expensive solenoid.
  • Shut down in the event of Low/Hi frequency and overvoltage malfunction.
  • Soft start logic in conjunction with step input and any restart after output short, output shutdown or remote off. Prevents inverter from drawing heavy surge current during start transition.
  • Fault monitor output for malfunction indication.


Input Voltage
Nominal; 28.0 VDC ± 4 VDC, Range: 20 to 37 VDC
Input Current
32A @ full load, 3A max @ no load
Output Voltage
+5% -7% (± 2% typ. on 115V)
Output #1
115 VAC (750 VA max. cont.)
Output #2
26 VAC (150 VA max. cont.)
Output #3
5 VAC (30 VA max. cont.)
Output Power
750 VA Total max.
Output Frequency
400Hz ± 1%
Phase & Waveform
Single phase sine wave.
Harmonic Distortion
2.0% typ. (5% max.) 20 to 37 VDC in.
Power Factor
.8 to -.95
83% typical.
-55°C to 71°C
14.0 lbs.
Overload Capacity
Capable of 150% output current @ normal AC output for 5 minutes.
Input Overvoltage
Withstand 130% input overvoltage for 5 minutes while supplying full rated VA output power. Output voltage under this condition 115 VAC +5% -7%
Input Voltage Protection
Inverter withstands transients of 88 volts lasting 1 mSec on the 28.0 VDC.
Overload & Short Circuit Protection
Withstand without damage or degradation loads exceeding 150% of rated output to an output short circuit. Inverter delivers rated output on removal of above conditions. 200% output current for fault clearance.
55,000 ft.
Tested to greater than 95% for ten days, temperature cycled between 75°F to 160°F.
Qualified to meet RTCA DO-160 env. cat. D2BR----
Mating Plug
1. Total continuous output power is 750 VA
Model Frequency Sychronizing
SPC-75( ) Synchronize from 375 Hz to 425 Hz
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121 King St, Melbourne VIC 3000, Australia.