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大多数380伏单相电焊机用电采用两只单相电能表计量。试以电焊机跨接于A、B两相来分析计量结果。电焊机实际消耗功率为:负荷电流Iab流经表a所计量到的功率为:负荷电流Iab流经表b所计量到的功率为:电能表总共计量
Most 380-volt single-phase welders use two single-phase watt-hour meters. Try to welding machine across the A, B two-phase analysis of measurement results. The actual power consumption of the welding machine is as follows: The power measured by the load current Iab flowing through the table a is: The power measured by the load current Iab flowing through the table b is: Total energy meter