Answer / murali

thumb rule 1KV we get 1Mohm. if suppose 415V motor we get 0.45Mohm.

Megger is the instrument name. it is insulation resistance value.

Answer / pradyumna171

megger value of any appleance should be 2 multiply with working voltage in kv plus 1 ie a 440 volt motor should have 1.88Mohm (2* .440 +1) , it is the minimum value. And megger voltage should be twice of working voltage of appleance.

if main CT is of ratio 50/5, and meter CT is -/5 what will be overall multiplying factor of meter.PT is 11000/110 .

0 Answers   BSNL,

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Can we perform parallel operation of two transformers when one transformer on load?

3 Answers  

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Why the rating of the HT breakers are in 1250 Amp, while the load on the breaker is around 50 Amp. ?

9 Answers   Wipro,

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what is the power factor?please tell me uses.

5 Answers   NTPC,

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why does connected a indutor with mnsformeretering core of current transformer ?

0 Answers  

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What is mean by PID controller? And what is its Long form?

9 Answers   Jindal,

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why the under of transformer platform is filled with rock stones.

10 Answers   TNEB Tamil Nadu Electricity Board,

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What is SMPS,How does it works?

4 Answers   Bharti, TCS,

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How to take of Transformer oil Break down voltage test?

2 Answers  

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Why is better to have a minimum ceiling voltage of 250% than 160%?

0 Answers  

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When the DG is running at the time we can connect to capacitor banK? why it is required or not

1 Answers  

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AL=0B9H,bl=75H, ADD AL,BL AL=____________? CF________? OF___________?

0 Answers  

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