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Solar Array Simulator (SAS) Specifications
Output Ratings
450W or 500W per channel with two channels housed in a single 5-¼ inch chassis
900W or 1000W per channel with one channel per chassis
Output voltages available from 60V to 200V
Input AC Power
AC Input 208V L-L, 3 phase 60 hertz
400V L-L, 3 phase 50 hertz
Programming Accuracy - at 25˚C ± 5˚C
Voltage 0.1% of full scale voltage
Current 0.5% of full scale source current
Readback Accuracy - at 25˚C ± 5˚C
Voltage 0.2% of full scale
Current 1.0% of full scale source current
Accumulator Accuracy
State of Charge ±2.5%
RMS Ripple and Noise
Voltage 0.5% of maximum output voltage
Current 0,1% of maximum output current
Transient Response
Load Switching Recovery Time
less than 2.5 microseconds to recover to within 90% of programmed value when switched from a short to a load.
Sensor Simulator Options
Voltage Monitors The voltage monitors are A-D converters that can monitor any voltage up to 100VDC
Thermistor The Thermistors are programmable 12-BIT resistive ladder circuits designed to emulate the readings that a battery thermistor would provide. They are manually programmable from the Sensor Simulator GUI or remotely through the BSS system's remote control input.
Strain Gauge Outputs The strain gauge outputs are programmable D-A outputs that emulate a battery strain gauge output. The sensor simulator software will cause the output of the strain gauge to output a signal when an excitation voltage is provided by the spacecraft.
Strain Gauge Excitation Sensing This is an input signal is received from the spacecraft.
Cell Open and Short
Switch Closures
Cell Voltage Simulation
Heater Loads