AVR Voltage Regulator R448R448 Permanent Magnet Generator or A.R.E.P or Auxiliary Winding type generator voltage regulator is a compatible replacement for Leroy Somer R448, R449, R438, and AEM110RE016 and also Olympian FG Wilson 922 124. Voltage Regulation < 0.5% Load Acceptance Module (LAM) 50/60 Hz Selectable Under Frequency & Exc. Max Protection Single Phase Or Three Phase Voltage Sensing Optional Soft Start Voltage Ramping Normal Rapid Response Time (Option) Sensing Input Terminal 0-110V = 95~140VTerminal 0-220V = 170~260VTerminal 0-380V = 340~520VFrequency 50/60 Hz selectable Power Input Voltage 40~150 VAC 3 phase Output Current Max. 10A Current Droop Max. 4% @ P.F.=0.8 Voltage Regulation < 0.5% (with 4% engine governing) Voltage Build-up Residual volts at AVR terminal > 5 VAC Voltage Output Max. 160 VDC @ 120 VAC External Voltage Adjustment 10% @ 1 K Ohm 1 watt trimmer Auxiliary Winding 6~150 VAC (No load rms) Response Time 0.3~1 sec. @ 20% voltage vibration LAM Voltage Droop Rate 10% & 15% selectable Environment Operating Temperature : -40~60 CStorage Temperature : -40~85 CRelative Humidity : Maximum 95%Vibration : 1.5G @ 5~30 Hz / 5.0G @ 30~500 Hz AVR Controls Functions VOLT : Voltage AdjustmentSTAB : Stability AdjustmentV/HZ : UFRO Knee Point SetEXC.MAX : Excitation Current LimitSTAT : Droop Adjustment Dimensions 203.0 (L) x 153.0 (W) x 60.5 (H) mm Weight 970g 2% Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.