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