Three Phase Pole Mounted Transformer Line And Phase Voltages

A transformer is a kind of voltage that can stabilize the circuit and ensure the stability of the voltage and current in the circuit. For the three phase pole mounted transformer, it is itself a kind of electrical equipment, which plays a huge role in various circuits and various Various advantages. The transformer has its own voltage and current. There are generally two types of transformers in terms of voltage, one is line voltage and phase voltage. They are two different voltages in the transformer, both related and different, so what is the relationship between them?
The phase voltage whose line voltage is three times the root sign refers to the voltage between the live wires.
Phase voltage is the voltage between each phase and neutral. It is the voltage between each live wire and neutral wire.
The three phase pole mounted transformer line voltage refers to the voltage between the leads from the three-phase equipment. The phase current refers to the current flowing through a phase coil of the three-phase equipment, and the phase voltage refers to the voltage applied to a single group of coils (for three-phase four Line system, the phase voltage refers to the voltage between the phase line and the neutral line). For the delta connection, the line voltage is equal to the phase voltage, and the line current is equal to three times the root of the phase current; for the star connection, the line current is equal to the phase current, and the line voltage is equal to three times the root of the phase voltage. For practical three-phase equipment, such as transformers, motors, etc., it is easier to measure line current and line voltage than to measure phase current and phase voltage, so the line current and line voltage are marked on the nameplate.
Three phase pole mounted transformer secondary side load current: line current = phase current, the line voltage between the three phases, and the phase voltage between any phase of the three phases and the neutral line.
In a symmetrical three-phase circuit, phase voltage or line voltage can be used for calculation, but the formula is different.
Use the line voltage calculation formula:
P=1.732×U×I
Use the phase voltage calculation formula:
P=3×U×I