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how much insulation resistance 11kv & 33kv under ground
cable between earth to phase & phase to phase.

Answers were Sorted based on User's Feedback



how much insulation resistance 11kv & 33kv under ground cable between earth to phase & pha..

Answer / vinay gupta

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 ?    50 Yes 13 No

how much insulation resistance 11kv & 33kv under ground cable between earth to phase & pha..

Answer / praful

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 ?    28 Yes 11 No

how much insulation resistance 11kv & 33kv under ground cable between earth to phase & pha..

Answer / shivkumar sharma

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 ?    4 Yes 2 No

how much insulation resistance 11kv & 33kv under ground cable between earth to phase & pha..

Answer / mintu kumar pandit

insulation resistance 11kv to 33kv minimum IR value for new
cable ph to ph & ph to earth 400 megohms for 100 meter 1 minitue
cable after repair the resistance must not be less that
10 megohms ( megger size 1kv )

Is This Answer Correct ?    3 Yes 1 No

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