3 Phase

Why there is 220v in 1-phase but 440v in 3-phase?

Questions by arpan singh

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The Phase voltage of an generator is 220 - 230 V but the Phase to phase
voltage (Line Voltage) will be 400 V.


Voltage of
R - Phase-230
Y - Phase-230
B - Phase-230


but


RY-400V
BY-400V
RB-400V


Because
Line Voltage will be Root3 Times of the phase voltage
In case off 3 phase Equipments we will take only line voltage for operating
mode. But in single phase will take only Phase voltage

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