Large Caliber Three Phase Power Tester 1.Current Range:0.00mA-1200A 2.Voltage Range:0.00V-600V 3.Power Range:AC 0.5W-720KW ETCR7300 Large Caliber Three Phase Power Tester.Introduction ETCR7300 Series Large Caliber Three Phase Power Tester is well designed and manufactured for measuring three phase AC voltage, current, leakage current, phase between current and voltage, phase between phase voltage ...