Question

What is the formula for the length of the tank?

(a) length of the tank = external diameter of h.v winding + clearance on each side between the winding and tank along the width

(b) length of the tank = external diameter of h.v winding * clearance on each side between the winding and tank along the width

(c) length of the tank = external diameter of h.v winding + 2*clearance on each side between the winding and tank along the width

(d) length of the tank = external diameter of h.v winding / 2*clearance on each side between the winding and tank along the width

The question was posed to me in examination.

This is a very interesting question from Methods of Cooling of Transformers in portion Design of Transformers of Design of Electrical Machines

Answer 1

Correct option is (c) length of the tank = external diameter of h.v winding + 2*clearance on each side between the winding and tank along the width

The explanation: The external diameter of h.v winding is obtained. Next, the clearance on each side between the winding and tank along the width is calculated and is substituted in the above formula.