why always out of the 3 phase(RYB) of supply, in Y phase w.r.t the voltage is higher? on R & B phase the voltage will be lower as compared to Y phase?

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Purpose of lighting transformer.

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why nearly all voltages are in the multiples of 11?

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What is the meaning of Dyn11 of Transformer.

17 Answers  

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how does an open delta transformer works

2 Answers  

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What is the working of AVR in AC generators?

13 Answers   Navrachana University,

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what is stay bow?

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why do you add the load short circuit impedance when considering short circuit amperage. It seems that you should only consider supply. If you need to consider loads and you don't know what loads are to be added , what would be a good sub-transient reactance rating for the loads?

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What is the source of dependent source ?

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Why Utility Distribution System in India is mainly at 11 kV? Why not Utility go for 33 kV?

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what is magnetizing current test in power transformer

0 Answers   ABB,

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How much allowable difference current between on three phases Dear sir, We have a 1870 KW HT motor, 11 Kv supply,FLA-120A,2870 rpm,2-pole squirrel cage induction Motor.And stator is connected in star connection with Liquid resistance stater to limit the starting current.It has coupled with Centrifugal air compressor.My question is it is loading 73% of FLA taking R-phase 86.7 A, Y-phase-85.4A,B-phase- 78.3A.why the B phase current is that much of difference.Is it allowable, or any one tell me how much allowable current.If any method to calculate.

1 Answers  

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