Answer / koti

It is not minimum but maximum which is less than 1 ohm.

Answer / jithendra

static earthing is to be below 2 ohms.
plc & transformer neutral earthing is to be below 1 ohm.

lighting earthing will also come under static earthing

Answer / kanhaikumar

25 ohms

What should be the earthing resistance of an industrial substation and also What should be the house hold earthing resistance?

20 Answers   Jindal, Pharma, TAAT, TATA,

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In what voltage EHT works(133/132/33/66kv?

3 Answers   Adhunik,

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how much Amp we can put in 1200kva generator?

11 Answers   MacLellan,

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During he starting up of the motor, the upstream's MCCB (350A) always trips due to the UVT relay activated. Can Star-delta starter use for a 20kW Motor (For a powder mixer machine) cause voltage-dip in the supply line voltage? If so, what are the recommended solution to eliminate/reduce the transient voltage dip in the line voltage?

4 Answers  

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what is diff btw electric,magnetic & eletromagnetic field

0 Answers   Senthil,

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why we use end termination kit for ht xlpe cables

1 Answers  

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in the exciter the power is feeded from battry or control or whatever.and we need it in the generators for the stating . do we need it in the shutdown also?i mean the exciter>

2 Answers   Shell,

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say a transformer is designed for 33/11kv step down with ratio 0.33 for load 1 mva. if am giving 11kv as a input that same transformer what will happen to its o/p voltage. and whether it can be operated for 500kva

4 Answers  

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how much winding resistance of 0.75kw to 12.5kw 3ph sqwiralcage induction motor?

0 Answers  

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difference between generator and alternator

0 Answers   Havells,

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why the carbon brushes are used heat created rotating parts in eiectricity

1 Answers  

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what is the main purpose of line PT and bus PT?

11 Answers   L&T,

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