Voltage regulation ±0.5% Short circuit capability: 3 x Irated 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 (1sec) 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.