... stamford automatic voltage regulator (AVR) 1.AVR-MX321 2.Compatible alternator :STAMFORD 3.ISO9001 CE 4.IN STOCK Technical specificationInput Voltage 170~ ... detect 170~250VAC, 2 phase or 3 phaseOutput Voltage Max 120VDC Current Continuous 3.7ADC Intermittent 6A for ... 10 secs Protection Low speed, over excitation, over-voltage, over-current, LAMRegulation +/- 1.0%others provided as follows ...