Why the underground cables will Punchar? or what is the reason to burst the underground cables?

1 Answers  

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We have a 33/11kv switchyard having 12.5 MVA power transformer. We export & import power through this transformer. When we export power, the PF will be depend on GRID PF & when we import power the PF will be depend on our load PF. but the problem is that,when neither we export nor import but our 33KV vCB is in close position,our meter read the power factor 0.14 to 0.25 at that moment. So how can be we improve the power factor at that moment.

3 Answers  

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What is the different types of cable & current capacity of cable

0 Answers  

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what is the breakdown voltage value in BDV test in transformers?

6 Answers   Siva, TATA,

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What are the types of Bus bar?

8 Answers   CTEVT,

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What is the basic principal, by which DC voltage level is increased more than the supplied AC voltage during conversion. As upto AC level it is contorrled by firing anlge but after maximum level how is it possible.Please clear picture. OR we have to supply the higher level AC?

0 Answers  

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if There is Short circuit in Power Transformer, what will happened to Buchholz Relay.?? How Buchholz Relay will respond.??

2 Answers  

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who can measure the size of power cable?

0 Answers   Chanar Sugar Mills,

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why does the magnetic balance tests at transformers? how to provide earthing in flight?

1 Answers  

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what is ups?how its works?and what is there in static switch how it works?

2 Answers   Bhel,

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what do you mean by the "bay" in a switchyard? how to determine exact number of bays in a substation?

8 Answers   Essar, L&T,

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FULL FORM OF MCCB

3 Answers  

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