why ELCB can't work if N input of ELCB do not connect to ground?

5 Answers  

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what is vA rating and class of a ct.

0 Answers   L&T,

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for a 11kv transmission line what capacity of CTs & PTs are required?

4 Answers  

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What is Hi-Pot Test for Grid Station HV Equipments?

2 Answers   Siemens,

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In India the supply voltage is 230 volt A.C. During the negative half cycle phase becomes neutral and neutral become phase? or what will happen during negative half cycle? how the electrons flow during positive and negative half cycle?

0 Answers   ITI,

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what is necessity of using isolation transformer?

4 Answers   NTPC,

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if we use fuse in neutral what will happen?

9 Answers   L&T,

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Difference in load break switch, isolator and circuit breaker.

1 Answers   KSEB, L&T, Siemens,

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A power transformer 4MVA/11KV/0.415Kv has been out of use in 12years. what maintenance actions/test need to be carried out before energizing.

0 Answers  

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In constant power region of 3-phase IM torque-speed characteristics, if frequency increases voltage A does not alter B decreases C increases D none of above

1 Answers  

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What is tan delta & PPM in transformer? and whats its IS value?

0 Answers  

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how will reduce the voltage. if 12volt/250ma transformer toreduce 6 volt

0 Answers  

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