Answer / engr. shomaz ul haq

The available power will decrease due to one missing phase and the decrease is not 33.3% but 43.3% due to the exchange of reactive power between the other two transformers windings.

Answer / guru

open ckt is appeared on the line.so the remain two lines are
get in much current.it's name as single phasing.

VCB in closed position during opertion if vaccume break then what will happend? it has any protection ?

1 Answers  

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in our sub station why we step down firstly 33kv\11kv then 11kv to 430v. can we direct step down 33v to 430.v.

7 Answers  

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why we have to do tan delta test of the transformer oil???

5 Answers  

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what is the main parts of DG? how it is working?

3 Answers   Kirloskar,

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Is MV canble armour can be earthed at both ends?

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Why servomotor and induction motor are in different shape

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In Which vector group power transformers are mostly manufactured?

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3 Answers  

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we use Dyn11 trafo for distribution purpose, if it`s possible for replacing Dyn1. if it`s change means what will happen?

1 Answers  

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