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.

Logic using 1 kV or 1,1 kV grade in house wiring Low voltage cable. Explain/suggest? some use 1kV and some prefer 1.1kV grade insulation low voltage cable why??

0 Answers  

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which pump used in WTP explain the function of VFD how to dtermine capacitorbank of capacity one plant

0 Answers   Dalkia,

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AT THE TIME OF INSTALLING THE POWER PLANT POWER IS TAKEN FROM NEARBY GRID AND GIVING THE SUPPLY TO THE GENERATOR WHICH ACTS AS MOTOR. WHAT IS THE NEED OF RUNNING THE GENERATOR AS MOTOR?

6 Answers  

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What is the IS standard for MCCB to be use (As per capacity of AMP)& for ACB also.

0 Answers  

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What is the Diesel consumption between 82KVA DG Set and 180KVA DG Set for 1 hour.

1 Answers  

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Transformer Specification say 66/11KV, 23/27/35MVA OFDAN,what is OFDAN? we know ONAN,ONAF or OFAF

2 Answers   Siemens,

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what is different between grounding and earthings?

4 Answers  

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voltage of a ckt is measured by volt meter having an input impedence camparable with the out put impedance of the ckt Eror caused is 1. Gross Error 2. Errors due to lloading effect

2 Answers   GATE,

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What is ignitor and why it is use in Hpmv lamp ?

2 Answers  

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What is the meaning of insulation leavel LI 75 AC 28 About scott transformer spcification

1 Answers  

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why frequency should be constant?

2 Answers  

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Advantages of low voltage drive (control panel)

1 Answers   ABB,

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