I have 30KW Motor Starter Panel, System voltage is 480V, So i have to convert voltage 480 to 220V to give the contactor coil. How i can select control transformer, Which rating transformer i can use this panel, what is the procedure, please tell me.

2 Answers  

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Definition of grid?

7 Answers   L&T, Pace Power Systems, Vijai Electricals,

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Can you any explain about active,reactive and apparent power in power system with example.

1 Answers  

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what is the diff between earth leakage relay and earth fault relay?

7 Answers  

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at what rate the micro controller increment its timer....is it 1micro seconds or 1/(12*10^6) seconds

0 Answers  

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What is LMU and LMDU. in PLCC communication of 132 kv transmission line. is it possible to use only one LMU with out LMDU ?

1 Answers  

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How can we calculate cable size in Low voltage & high voltage

0 Answers   United Breweries UB,

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in most industies hormonics present up to some level. what is limit ? and there effect?

4 Answers   Bhel,

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i need the curve duty cycle and amper for (150 kva @50% dyty cycle) transformer turn ratio :19 and vin 400

0 Answers  

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Whats the purpose of neutral earthing?

5 Answers   Electrical, Hindalco, TCS,

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Dear sir, I completed DECE In the year 1995.Now i am working in a private company from last 10 years as an Electrical supervisor.The company having a 1000 KVA transformer.Now i try to apply "C" Licence. I am eligible or not.If not eligible,pls give solution.

0 Answers   Balavigna,

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How to determine the breaking capacity such as break down current and break down voltage for VCB and CT's.

0 Answers  

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