What is the function of NGR for the parallel operation of alternator? whats happen when different rating of alternator are running with parallel?

0 Answers   Welspun,

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how to reduce earth resistance in sandy soil.

1 Answers  

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what is the efficiency of thyristor

0 Answers  

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phase colour is indicated by R Y B (red yellow blue) but in transformer i have seen U V W instead of (R Y B) have any meaning of this

3 Answers   Areva, Kim Yew,

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Hi, I've just got into my electrical engineering course and I need some help with a question of mine here. During a site visit, we were shown a main LT panel which has switchgears, ammeters and different kinds of relays and the distribution network from that panel. In the main LT panel I've noted down the current readings as Ir - 163A, Iy - 150A and Ib - 147A. The Line to Line voltage is 415 V at 50 Hz and Line to Neutral voltage is 230V at 50 Hz. From the above details, how would I calculate the kVA rating of transformer? The primary side voltage of the transformer is 11 kV and the secondary side voltage is 415V and the frequency is 50 Hz.

2 Answers  

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how hydrogen or helium is a cooling agent for alternator./ generator of big size.

1 Answers  

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What is the formula to calculate capacitor bank rating for a certain load.

2 Answers  

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In VSD (variable speed drive)I/P and O/P connections given wrongly what will happen?

5 Answers  

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What is the reasonable voltage between Neutral & Earth of an electrical system for good earthing?

6 Answers   HAL,

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what is surge impedance loading?

1 Answers  

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what is difference between 2wire method and 4wire method of winding resistance testing of transformer?

1 Answers  

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How the over load setting for HT Motors calculated-provided in Numerical Relay

0 Answers   Damodar Valley Corporation,

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