What Are Phase Voltage And Line Voltage?
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For example: In a three-phase five-wire power supply system (such as a TN-S grounding protection system), the surge protector consists of three phase lines, one neutral line, and one PE line. In this three-phase five-wire power supply system, the phase voltage refers to the voltage between any phase line and the neutral line (N line), and any phase line and the PE line; the line voltage refers to the voltage between any two phase lines.
The voltage between L3 and PE line is the phase voltage, and the voltage between L3 and N line is also the phase voltage;
The voltage between L1 and L2 lines is the line voltage.
