Answer / c.vadivel

Earthing of electrical machines are current are Bradly
classified in to current carrying earth and non current
carrying earth.
Current carrying earth:solid earthing,resistance
earthing,inductive earthing,grid type earthing and
capacitive earthing.
non Current carrying earth:making potential free metal part
associated to electrical machines and switch gears.
Megger are according to potential measurement classified as
low voltage megger ie 0 - 500V.,medium 0-1000V.,high voltage
megger 0-5kv,and 0-10kv

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