0.072

0.083

0.0871

0.0909

Reduce copper loss

Reduce hysteresis loss

Reduce mechanical loss

Reduce eddy current loss

Copper loss > Iron loss

Copper loss < Iron loss

Copper loss = Iron loss

Copper loss =Eddy current loss

Activate in moisture presence

Activate at overloading condition

Activate at open circuit condition

Activate at high temperature condition

To minimise the burden

To maintain constant output

To prevent high static shield

To minimise the error in reading