Answer / owais

dear first u do calculate you load in watt and then u do
find amp with the help of voltage in the end u have total
amp and your breaker 20% extra

Answer / r k choudhary

first u have to know the input voltage then calculate the
ampere. then suggest the VCB standard rating as per
manufacturer.

Why current shoots up in the secondary on the knee point voltage during saturation test of CT? How core saturation effects the secondary current (while the primary side is open)? What the logic behind this?

0 Answers  

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What is Skin effect of the cable?

8 Answers   L&T,

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3 shows a 415 V, 3-phase generator supplying a 3-phase 415/110 V transformer. Draw the individual and combined impedance diagrams to a base of 10 kVA. Determine the system fault kVA and the fault currents at the 415 V and 110 V busbars for short circuit faults on the transformer input or output terminals. Work in p.u. values of impedances.

0 Answers  

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What is the use for cable entry in control room?

0 Answers  

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why did youi choose this career?

0 Answers   KTB, ONGC,

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why transformer rating is always in KVA

7 Answers   GNG, NTPC,

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What do you mean by class of CTs and what is the meaning of cl 1.0, cl5P10, cl 10P10 CTs?

3 Answers  

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Wat is the best to use in a generator a 6.5kva or a 7 kw

4 Answers  

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Why only plate(copper) Earth pit given for neutral earthing? why not pipe(G.I) Earth pit?

1 Answers  

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What is the function of wave trap in an electrical substation?

2 Answers  

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how is working the auto transformer?

1 Answers  

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What are the types of Transformer? Name them.

9 Answers   Bhel, HSL, NTPC,

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