Question

At high voltages, the current transformers are enclosed in a tank.

(a) True

(b) False

I had been asked this question by my college director while I was bunking the class.

Origin of the question is Design Features of Current Transformers topic in chapter Extension of Instrument Ranges of Electrical Measurements

Answer 1

Correct choice is (a) True

To explain: The current transformers are enclosed in a tank at high voltages of the order of more than 7 kV. The tank consists of a solid insulating compound. Since the cooling is poor, the compound introduces difficulty.