The type of
insulator used on lines up to 33 kV is?
I. Pin
insulator
II. Reel
insulator
III. Train
insulator
I and IV
II and II
III and IV
I and II
I and IV
I and IV (pin
insulator & strain insulator) :
Pin type : Pin type insulator are used for transmission and distribution of electrical power at voltage up to 33 kV Beyond operating voltage of 33 kV the pin type insulator become too bulky and hence uneconomical.
Strain
Insulator : In high voltage line strain insulator
are used. For low voltage transmission line, strain
insulator consist of an assembly of suspension
insulators. The disc of strain insulator are used in thevertical plane.
Hence, the
correct option is (A).
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