多表位电能表检定装置
single phase multi-position electric energy meter testing equipment
电测量仪表检定装置
electrical measuring instrument verification devic
电能表检定装置
meter testing equipment
testing equipment for electrical energy meters
power testing device
Watt-hour meter test bench
the equipment for three-phase Watt-hour meter
多功能电能表检定装置
multi-function Walter-hour meter test equipment
交流电能表检定装置
Alternating current power detector
三相工频可控硅电源
Three-phase Power Frequency SCR Power Supply
交流标定相-相检测变压器
ac nominal phase-phase potential transformer
驻定相位定理
stationary phase principle