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How many discs are used in suspension insulators for 220kV?

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in Design of Electrical Machines by (687k points)
How many discs are used in suspension insulators for 220kV?

(a) 3

(b) 4

(c) 8

(d) 14

The question was posed to me by my college professor while I was bunking the class.

My question is from Insulating Materials topic in chapter Electrical Engineering Materials of Design of Electrical Machines

1 Answer

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Best answer
The correct choice is (d) 14

Easy explanation: 3 discs are used when voltage is 33kV. 4 discs are used when voltage is 66kV. 8 discs are used when voltage application is 132kV.

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