TSO-C73 STATIC INVERTER
400Hz 500 VA
The SC50 is a lightweight, static inverter that utilizes the latest state of the art, solid state circuitry to invert a 28 VDC input to a 115 VAC, 400 Hz sine wave output.
Design features include a crystal controlled oscillator for output frequency stability and a pulse-width-modulated square to sine wave power conversion scheme for efficient and reliable operation.
The SC50 is primarily designed to power airborne and ground instruments, compasses, gyros, radars and navigation equipment.
| Specifications: | |
| Input Voltage: | 28 VDC. (nominal). 20 VDC to 36.5 VDC range. |
| Input Current: | 20.7 ADC at full load. 0.5 ADC at no load. |
Output Voltage:
|
+5%, -7% (±2% typ. on 115 V).
|
Output Power:
|
500 VA total of 115 V & 26 V.
|
| Output Frequency: | 400 Hz ± 1.0 Hz. |
| Phase & Waveform: | Single phase & sinusoidal. |
| Harmonic Distortion: | 0.7% (nominal), 3% max. |
| Power Factor: | +.8 to -.8 |
| Efficiency: | 87% (nominal). |
| Regulation: | 1% Line, 1% Load, 2.5% Temp. |
| Weight: | 4.9 lb. (2.22 kg) |
| Response Time: | 300 Usec (NL to FL) |
| Overload Capacity: | 110% of rated output power for 2 hrs 150% of rated output power for 5 min |
| Protection Circuits: | The inverter will shutdown under the following conditions:
|
| Remote On/Off: | Yes. Ground Pin E to turn ON |
| Operating Temp: | -55° C to +71° C (-65° F to+160° F) |
| Altitude: | 55,000ft. |
| Environment: | RTCA DO- 160C env. cat. F2ZBB(LV)XXXXXXBXAXXXZXXX |
| Cooling: | Thermostatically controlled brushless fan. |
| Compliance: | FAA TSO-C73 |
| PIN NO. | DESCRIPTION |
| A | Input +28 VDC |
| B | Output 115 VAC, 400 Hz |
| C | Output Common |
| D | Input Return, Chassis GND |
| E | Remote On/Off. GND to ON |
| F | N/C |
| G | Output 26 VAC, 400 Hz |
| MATE | MS3106A18-9S or Equiv. |