Answer / k.prakashchandra

It will act when the resultant unbalanced current of phase
CTs is different from the current in NCT

Why not implimenting power factor in Diesel generator

6 Answers   HP,

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why core of transformer in square or rectangular why not in circle or ellipse if this what happens

2 Answers  

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what is the formula to calculate the distance between one phase to another phase in single phase line and 3 phase line for different volt for example ; 33kv, 11kv ,22kv,230v

1 Answers   Suzlon,

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its Kva and Kv are same?

3 Answers  

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2 t/f operating in parallel will share the load according 2 their- a)leakage reactance,b)pu impedence,c)efficiency,d) rating.

1 Answers  

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When we use air circuit breaker, it has O/L protection ,time delay SC protection, Instataneous SC protection & ground fault protection. They all have some setting range. But what is the suitable/allowable setting for the above protection which will be safe for the equipment? For example-O/L protection setting have a range of (0.4,0.45,0.5,0.55,0.6,0.65,0.7,0.8,0.9,1.0)xIn Time delay SC protection have a range of (1.25,1.5,2,3,4,6,8,10,12)xIn Time delay setting is 0.02,0.1,0.2,0.3,0.4 Instataneous setting is fixed to 20xIn Gound fault setting is given 100A,300A,600A,900A,1200A This setting are for 2500A ACB. So what will be the basic allowable setting for the above protection? is there any formulae to calculate this<

0 Answers   Lupin,

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What is the main cause of magnetism?

0 Answers  

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what is the importance of earthing system on the generators big capacity and small?

0 Answers  

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what is main advantage if motor connected in star or delta?

3 Answers   Essar,

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how can we test the polarity of a 3-phase transformer?

2 Answers  

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what happens to the supply voltage if there is any change in frequency?

1 Answers   Gridco,

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Why we use ups battery and dsdb battery in thermal power plant

0 Answers   MDeC,

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