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Answer Posted / harmeet singh
switchgear
main function is switching operations in electrical
ckts.they r used to de-energize equipment to allow work to
be done and also to clear faults downstream.
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difine electrical ballast in HPSVL
1 “earthing” for bonding of equipment and circuits to common plant earth electrode potential, 2 “protective earthing (PE)” when this bonding is required for personal safety provisions 3 “grounding” for interference suppressing bonding of screens, sys-tems with ground level 4. low-impedance earthing ? 5.primary earthing system and secondary earthing system what is that? 6.earthing electrode or mesh net earthing electrode ? very confusing , simple but very informative help required ? i will be very very thankful to you guys.
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