TCVN 7589-11-2007 Electricity metering equipment (a.c.).Particular requirements.Part 11: Electromechanical meters for active energy (classes 0,5,1 and 2)
2007TCVN 7589-11-2007 Electricity metering equipment (a.c.).Particular requirements.Part 11: Electromechanical meters for active energy (classes 0,5,1 and 2)