The power transmitter will measure active power, reactive power, active reactive combined power, etcAfter isolation, it is transformed into a linear output DC analog signal (0-20mAdc, 4-20mAdc, etc.). When selecting a power transmitter or debugging wiring, it is often referred to as "line voltage"、Phase voltage halo？To understand their relationship,Firstget, obtain, gainknow：What are phase voltage and line voltage.Phase voltage is actually the voltage value between the phase line and the neutral line, while line voltage is the voltage value between the phase lines.

There are three-phase three wire and three-phase four wire wiring methods for power transmitterstwoVarious methods.If the three-phase three wire connection is used, the voltage line is onlyATheBTheCThere are three phase wires, and there is no neutral wire, so in the three-phase three wire wiring method, there is only the statement of line voltage. In the three-phase four wire connection method, the voltage lineFrom threeRoot phase line andoneComposed of a zero wire, the measured phase voltage between the phase wire and the zero wire is generally220VThe measured value of the line voltage between the phase lines is380VSo the line voltage=√3Phase voltage.