Like phase voltages, the line voltages have also a phase difference of 120°.
9.4 TERMS USED IN THREE-PHASE SYSTEMS AND CIRCUITS
The following are some of the terms used while describing a three-phase system. These are as
follows:
1. Balanced supply: A set of three sinusoidal voltages (or currents) that are equal in magnitude but
has a phase difference of 120° constitute a balanced three-phase voltage (or current) system.
2. Unbalanced supply: A three-phase system is said to be unbalanced ...
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