FY-1U1X5三相电压表 FY-1P1X1三相有功功率表 FY-1Q1X1三相无功功率表 FY-1H1X1功率因数表FY-1F1X1频率表42方形 FY-1I2X1交流电流表 FY-2I2X1直流电流表FY-1U2X1交流电压表FY-2U2X1直流电压表FY-1I2X5三相电流表FY-1U2X5三相电压表 FY-1P2X1三相有功功率表 FY-1Q2X1三相无功功率表