Browse  |   Placement Papers  |   Company  |   Code Snippets  |   Certifications  |   Visa Questions Post Question  |   Post Answer  |   My Panel  |   Search  |   Articles  |   Topics  |   ERRORS new
 Do you have a collection of Interview Questions and interested to share with us!! Please send that collection to along with your userid / name. ThanQ

 Categories >> Engineering >> Electrical Engineering

 Civil Engineering Interview Questions (2985) Mechanical Engineering Interview Questions (3261) Electrical Engineering Interview Questions (13162) Electronics Communications Interview Questions (2344) Chemical Engineering Interview Questions (407) Aeronautical Engineering Interview Questions (76) Bio Engineering Interview Questions (16) Metallurgy Interview Questions (79) Industrial Engineering Interview Questions (162) Instrumentation Interview Questions (2308) Automobile Engineering Interview Questions (104) Mechatronics Engineering Interview Questions (38) Marine Engineering Interview Questions (43) Power Plant Engineering Interview Questions (69) Engineering AllOther Interview Questions (1185)
Question
```how much insulation resistance 11kv & 33kv under ground
cable between earth to phase & phase to phase.```
Question Submitted By :: Varun Irppl Noida
I also faced this Question!!     Rank Answer Posted By

Re: how much insulation resistance 11kv & 33kv under ground cable between earth to phase & phase to phase.
# 1
between earth to phase it must be from 50megaohm to
infinite. and from phase to phase it must be from
500megaohm to infinite.

 Is This Answer Correct ? 36 Yes 10 No
Vinay Gupta

Re: how much insulation resistance 11kv & 33kv under ground cable between earth to phase & phase to phase.
# 2
Thumb rule to measure the IR value is add 1.5 to the
operating voltage (convert the voltage in KVolts) the
answer is the min. required safe IR value (Mega ohm).
For Example the Operating voltage is 22kV then 1.5 + 22 =
23.5. 23.5 Mega Ohm is the min. IR value required.
The IR value must alaways be on higher side.

 Is This Answer Correct ? 23 Yes 8 No
Praful

Re: how much insulation resistance 11kv & 33kv under ground cable between earth to phase & phase to phase.
# 3
Between Earth to phase insulation resistance must be twice
of operating voltage by H.T.( 2.5 k.v./5 k.v. )megger

 Is This Answer Correct ? 0 Yes 0 No
Shivkumar Sharma