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.

Draw the circuit of clapp oscillator?

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why generaters need four earthings

5 Answers   Sasken,

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If I want to buy a new Xformer for my plant what are the main parameter will I need to check?

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what is the reason for harmonics introduced in the line

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Need help. 3 phase system. Neutral line arced and melted upon connection of connector with 3 phase power. Why would that happen?

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Welding machine

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List the characteristics of filter?

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What are the different types of controllers?

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WHERE to use CVT & PT.

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which type of motor we are using in local train???

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What are the advantages of using distance protection schemes as opposed to normal overcurrent/ earth fault protection on high voltage feeders.

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On wat basis TSM & PSM are set? Example.TSM=30% n PSM=2.5A....Hw they are set and how we come to know that the particular relay should be set to this value only?

2 Answers  

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