Question

Why PT and CT terminals are star connected?

Answer 1

Answer:

Advantage of Star connection in Potential transformer:

In potential transformer the primary and secondary windings are star connected, because in star configuration, the line voltage is root 3 times of phase voltage, hence the voltage distribution to each winding is reduced or divided by 1.732 times.

Explanation:

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Answer 2

Answer:

In potential transformer the primary and secondary windings are star connected because in star configuration the line voltage is root 3 times of the phase Voltage , hence the voltage distribution to each windings is reduced or decided by 1.732 times . Due to that the insulation cost on the primary winding comes lesser.