Stamford Generator Spare Parts SX460

Self EXcited Stamford Newage avr SX460
SX460 is single phase brushless avr for < 150kw diesel generator.
SX460 is a harlf-wave phase-controlled thyristor type Automatic Voltage Regulator(avr) and forms parts of the excitation system for a brushless generator.

Features
Voltage Regulation < ± 1%
Soft Start Voltage Ramping
Sensing Voltage Loss Protection
120 or 240 VAC Sensing, Jumper Selectable
Under Frequency Roll Off Protection
With Under Frequency LED Indicator
Sensing Input
Voltage: Jumper selectable
120(95-132)VAC, 240(190-264)VAC, single phase 2wire
Frequency: 50-60Hz nominal
Phase: 1

Power Input (PMG)
Voltage: Max 90VDC at 207VAC input
Current: Continuous 4A, intermittent 6A for 10 secs
Resistance: 15 Ω Minimum
Regulation: +/-1% RMS with 4% engine governing
Thermal Drift: 0.05% per deg. C change in avr ambient
Typical system response:
AVR reponse: 20ms
Field currnt to 90%: 80ms
Machine volts to 97%: 300ms
Voltage established: Residual voltage at avr terminal >5VAC
External Voltage Adustament: +/-7% with 1k ohm 1 watt trimmer
Under frequency protection

Set point: 95%Hz
Slope: 170% down to 32Hz
Unit power dissipation: 10 watts maxinmum
Environmental
Vibration: 20-100Hz 500mm/sec
100Hz 2Hz 3.3G
Operating temperature: -40 to +70° C
Relative Humidity 0-70c: 95%
Storage temperature: -55 to +80° C