How much costly in percentage wise is sandwich busduct costly than air insulated busduct of any rating?

0 Answers  

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How many types of colling system it trformers?

0 Answers  

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difference between earthing and grounding?

2 Answers   ABB, Bharti, L&T,

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What is the cause for a blown fuse in one phase of primery side(HV) of a three phase transformer( 4169v-460v) in the time of closing its supply breaker. There is no load on the secondery side of the transformer in this moment.

3 Answers   Novachem,

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why transformer rating in kva

6 Answers  

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How to calculate unit consumption on the basis of load. kWH=kwXhrs.is it correct? kw is motor load.What is unit consumption at 100% load, 50% load & on no load.

6 Answers   GIL,

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What is earth system using on the floater TN-S or TT. Iam not sure and what ICCP

0 Answers  

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Why we called L-G fault as line to ground fault why ground? suppose if a line falls on building roof then can we called these fault as line to roof fault? please explain why ground term is used here?

3 Answers   Bhel,

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How can you calculate in detail the VA burden of current transformer used for Restricted earth fault protection? Please understand that the CT required here is Class PX or X. Also please show the calculations for knee point vtg, stabilizing resistor, magnetising current.

3 Answers  

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On PVC conduit the class "A" "B" or "C" is marked what does it shows. Either its thickness or its composition?

2 Answers  

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No load test of induction motor is carried out to compute= A stator resistance B rotor resistance C magnetizing reactance D rotor reactance

1 Answers  

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It is advisable 2 use auto-transformer if transformation ratio is-a)110KV/11KV,b)230kv/110kv,c)110kv/66kv,d) 400kv/230kv

2 Answers  

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