-7 type voltage regulator is an advanced design electronic 5 Amp regulator that ensures excellent performance of alternators while they are running and during starting. The regulator is equipped with a complete protection system against operating conditions that could be dangerous for the machine. The SR7 regulator is suitable for use with all M.A alternators and is standard supply for outputs below 85 kVA, both three-phase and single phase. AVR SR7 and AVR SR7-2G models are designed for generator applications. Sensing Input: Terminals 1,2; 3,4; 5,6 Can be connected to Y or Delta configurations Input: 220~480VAC Single Phase 50/60Hz Input Range: 50~280VAC (Terminals 1,2), 50/60Hz Output Voltage: Maximum 90VDC @ 220VAC Harmonic Wave Output Current: Continuous 6A, Maximum 8A for 10 seconds Protection Features: - Over Excitation Protection: 25~55VDC @ 0.1~20 seconds - Under Frequency Protection: Range 42~60Hz Voltage Regulation: Less than 1% (with 6% engine governing) External Volts Adjustment: ±5% @ 100K Ohms Voltage Build-up: Residual Voltage above 5VAC at 25Hz EMI Suppression: Internal electromagnetic interference filtering Excitation Winding Resistance: DC Resistance 10~100 Ohms Material: Plastic + Metal Color: Black Package Contents: 1 x English manual 1 x Voltage regulator board Note: Light and display differences may cause slight color variation between the item in the picture and the actual product. Measurement allows an error of +/- 1-3 cm.