Answer / dnyyanesh

When dg is on conditon. the apfc panel off because of power factor

if we have 380 KVA DG. how to calculate Power Factor. With detailed formula

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can v use earth as nutral. yes than y.if not y.

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how to set the time in digital timer ?

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What is RMU, and what it's function?

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What is rccb?

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During Starter Panel Com missing I Found The Main Incomer 40Amp MCB 10KA Trip When Motor Change Star To Delta Motor Rating 20HP BUT When We Use Same MCB To Other Motor It Does Not trip Or What Is Necessaries for Star Delta Starter MCB SFU MPCB OR MCCB And What are The Breaking Capacity of MCCB in the Motor above 15HP

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what is the effect of power factor to (a) voltage (b) transformers (c) generators (d)transmission lines

4 Answers  

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how to test YNyn0 vector group in transformer?

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How can we convert 11 kv to 440 volt without using transformer ?

0 Answers   Electrical,

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What are the possible causes of REF operation on a power transformer

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I completed iti in2004 I was worked in A grade contractor can I get c licence

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Sir we have 12.5 MVA(110/11KV) transformer (Y-Y) connected,which tripped showing earth fault,when we charged transformer it stood OK ,but on connecting 11 KV feeders it tripped showing earth fault.our service engineers found that the B phase and R phase phase connecting to neutral broken from HV OLTC(on load tap changer),and R phase and Neutral is ok.Dissolved gas analysis shows that accetline content is high,tan delta value is 12.My dout is it is an internal fault of transformer,why REF or diffrential relay is not acted?

1 Answers  

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