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Over head line ko chrge krne se pahle le step ko bataiye sir
@@vikashgaurav5790 ERT of each tower MeggerSignature OTDR
Sir.... Why ac supply is not used for megger test?
Very good question 1- DC has 0 frequency 2- we perform Megger test to check the insulation resistance and that could possible with DC source3- if we apply AC source then we get impedance instead of resistance
Over head line ko chrge krne se pahle le step ko bataiye sir
@@vikashgaurav5790
ERT of each tower
Megger
Signature
OTDR
Sir....
Why ac supply is not used for megger test?
Very good question
1- DC has 0 frequency
2- we perform Megger test to check the insulation resistance and that could possible with DC source
3- if we apply AC source then we get impedance instead of resistance