How we check vector group for a Dyn1 transformer?

6 Answers  

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Explain how Hormonics will effect the Electrical System?

5 Answers  

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what the good value of earth resistance test

3 Answers  

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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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why tube light flicks??

1 Answers  

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In constant power region of 3-phase IM torque-speed characteristics, if frequency increases slip A does not alter B decreases C increases D none of above

0 Answers  

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What does the term power factor shows?

0 Answers  

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why transmission voltages are in multiple of 11kv?

10 Answers  

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what is IDMT relay.

4 Answers   Birla,

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Why the ceiling fan rotates in clockwise direction and table fan rotates in anticlockwise direction.

3 Answers   Kirloskar, MPF, Wipro,

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wht do u mean by constant flux linkage theorem ?

3 Answers  

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What is the megger value for ht

16 Answers   Electrical,

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