Answer / sethar12

General rule is 1 MOhm/kV + 1, so for 132kV side
transformer, megger value must be at least 133MOhm.

Answer / haikal

As general rule in using megger is 1 MOhm/kV, so minimum
value is 132 MOhm.

Answer / c. devadas

132 x 2 Meg.Ohm at 70 degree celsius. Every reduction of 10
deg.C will double the insulation value.

what is the relationship between phase & neutral

0 Answers  

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How many battery required for an 3kva online ups with 3 hrs back up with usage of 3 fans,3tube lights

1 Answers  

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Hello friends., my question is related to testing of current transformer... A Ct having knee point voltage of 750 volts., and I have two step up transformer's of rating 230 v to 440 volts., can I obtain the value of 750 volts by using the two transformer's.... If yes then how could I connect the transformer's to obtain knee point voltage?? thank you in advance

1 Answers   ABB,

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In what situations relays are used in Circuit breaker? In Above what rating of Circuit breaker the relays are used? Why relays are not used for CB like MCB?

0 Answers   Elektrotek,

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What is Hot reserves and spinning reserves?

1 Answers  

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what are the advantages by using IGBT in VSC HVDC than thyristor in conventional HVDC

1 Answers   Bhel, Eskom,

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in a plug point why the hole size at the top is large?

9 Answers   Bhel, TCS,

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Megger type of instrument is used to check??

8 Answers  

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what is the difference between 2phase & 3 phase?

1 Answers   NTPC,

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why current coil has less number of turns compared to pressure coil?

8 Answers   Airtel,

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what is the diff. btwn. electronic regulator and ordinary rheostat regulator for fans?

3 Answers  

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The metal-enclosed switchgear and controlgear is subdivided into three types: 1. metal-clad switchgear and controlgear; 2. compartmented switchgear and controlgear 3. cubicle switchgear and controlgear. What is the main differnence between them. State some example.

0 Answers  

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