Answer / pravin kumar

The minimum Insulation Resistance value for the power cables
2mega-ohm/kv this is both applicable for LT& HT side
for ex:
11 kv power cable need IR value is 22 mega-ohm

Answer / pgr ram

for HT cables (6.6 KV to 33KV) above 500 megohms is
required. For LT cables (1100 volts) minimum 100 meg ohms
is required

Answer / ibrahim

(cable voltage rating/1000+1M ohm)x10

Answer / deepak marya

IT IS ONE MEGA-OHM PER KVA AT 70 DEGREE CENTIGRADE.IR VALUE
IS HALF FOR TEN DEGREE CENTIGRADE RISE IN TEMP.

What is the rating of a circuit breaker needed for 300 kv load in 33KV supply line of 33/415 transformer ? Whether 800/1200 amp vaccum circuit breaker can perform for a 33 KV line in input in 415 volt in output of the transformer ?

1 Answers   Hira Group,

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what is earth fault relay 64T, why it is used in main Incomer and neutral CT of Transformer.

0 Answers  

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Define over current & earth fault ?how its functioning ?

1 Answers  

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why maintenance batteries used in DG sets not in MAintenance free Batteries.

4 Answers  

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Why earthing done?

1 Answers   CBRE,

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why do some transmission towers have two insulators at one side and three insulators at the other side

2 Answers  

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what bridge circuit is used in Tandelta circuit

1 Answers  

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OHMS Law is only applicable for ac or dc or both circuiT?.

6 Answers  

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What is majour reason of Electrical Arcing ?

9 Answers   ABB,

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WHAT IS THE HIGHEST UNDERGROUND TRANSMISSION VOLTAGE IN THE WORLD?

3 Answers   Power Grid,

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what is difference between neutral and earth

5 Answers   HP,

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Why corona takes place?

4 Answers   L&T,

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