1)Single phase electrical socket meter 2)ANSI standard 3)Anti-Tampering function This instrument quantity is ... ),5(20),5(30),10(40),15(60),20(80)A voltage110V,120V,220V,230V,240V meter form 1S,2SNominal Voltage ... Voltage Range 0.87Un to 1.2UnImpulse Voltage6 kV, 1.2 / 50 μs Single Phase Electronic Socket Meter