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Question

Find the approximate value of sag for a line which has a span of 200 m between to 

A.

0.02 m 

B.

2 m 

C.

0.2 m 

D.

20 m

Answer ( Option B)

2 m 

Solution

As we know that

spacing 

Where

S = sag in meters

VL = line voltage in kV

Some typical values of spacing are given below :

Line voltage in kV

0.4

11

33

66

132

220

400

765

Spacing in meters

0.2

1.2

2.0

2.5

3.5

6.0

8.

14

 Hence, the correct option is (B).

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