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The SR-7 type voltage regulator is an advanced design electronic 5 Amp regulator that ensures excellent performance of the alternators while they are running and during starting. The regulator is equipped with a complete protection system against operation conditions that could be dangerous for the machine. The SR-7 regulator is suitable for being used with all alternators and is standard supply for power outputs below 85 kVa, both three-phase and single phase. Feature: SENSING INPUT Voltage: 80~350VAC ,1 phase 2 wire POWER INPUT Voltage: 50~270VAC ,Frequency 50/60 Hz MAGNETIC FIELD OUTPUT voltage:max 63VDC 220VAC input Current: Continuous 6A Max Intermittent 7A for 10 seconds Package Included: 1 x SR7 Automatic Voltage Regulator. 1 x Manual.