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.

which type of motor is suitable for water suction pump ?

4 Answers  

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What is corona ? Mention its positve effects .

1 Answers  

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what are the shades for mimic diagram i.e for 3.3kv,6.6kv,11kv,22kv and 33kv? which is the IS for mimic diagram?

2 Answers  

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What is the unit of charge and current?

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How earth fault & earth leakage equvpment are works?

5 Answers  

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A mass of 1200g is accelerated at 200 cm/s2by a force. The value of the force required is:(a) 2.4N(b) 2400N(c) 240 kN(d) 0.24N

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transformer losses

1 Answers  

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why transformer rating in kva ?

14 Answers   Eltel, RRB,

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in case of OC+EF relay, how the burden is divided/calculated/shared by the CTs in case of normal (healthy condition) and during fault conditions.? three coils of OC & ef coil is conected in residual connection across the three CTS.

1 Answers  

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explain single phase series motor

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can we connect transformer with star conected secondary to delta connected primary in series?

1 Answers  

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What do you mean by an instrument transformer?

0 Answers  

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