IEC 62052-11Electricity metering equipment (a.c.) - General requirements, tests and test conditions - Part 11: Metering equipment DOW-CG1Multi function Damped Oscillatory Wave (DOW) generator DOW-CG1 INS-08058 kV impulse voltage tester with fixed energy and impedance. INS-0805 NW-INS-05JMatching network to INS-1250 NW-INS-05J Electricity metering equipment general requirementsIEC / EN productIEC 62052-11