AVR发电机R438

AVR for generator R438 The circuitry of the R438 Automatic Voltage Regulator(AVR) provides closed loop control of the generator output voltage by regulating the exciter field current. SPECIFICATION: Voltage regulation: +/- 0.5% Short circuit capability :3 × lrated for 10 seconds (AREP or PMG excitation ) Voltage sensing : 95 to 140 volts (50/60 Hz ) or 170 to 260 volts (50/60 Hz ) or 340 to 520 volts (50/60 Hz ) Response time : Normal ( 1 sec ) for +/- 20% voltage variation Or rapid (0.3 sec ) for +/- 20% voltage variation Remote voltage adjustment range of : +/- 5% 1000 series alternators do not have PMG option