Answer / k.prakashchandra

Potential tr is for measurement and control tr is for
supplying power to control and auxiliary equipments which
can not use the regular main supply.

what is meant by differential protection of transformer

1 Answers  

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why in three phase 440 circuit in all phase current is almost equal L1-35 A,L2-34 A ,L3-31 A but in nutral when i check with clamp meter it shows 25 A?

4 Answers   OPS,

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why is the vector group analysis done in transformer tests

28 Answers   K K Rao, Lloyds, Nicco Engineering Services Limited, Qatar Petroleums,

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Sir if i have 2kv ups in which 17ah 8 battries load 600watts how much back up time i get and if i put 6kv ups with the same no of battries same amp can i get more back up time please give reply exactly what is the procedure to calculate back up time for different kv,s

3 Answers  

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what is LOS(line of sight)?

1 Answers  

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what are the types of basic earthing?and why we are doing that?

3 Answers   Bharti,

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How to design CT for connected with Transformer OLTC operation? normally CT output design for 1A/5A range but during OLTC Tap position changing time how to function the CT?

1 Answers   HEG,

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how to build a network which step down 415v to 1v rms

0 Answers  

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what is the difference between the 94 lockout relay and 86 lock out relay. I have noticed that the 94 lockout relay is activated when the distance realy is activated and 86 is activated when the 87T differential is activated. but why can't the same lockouts be used for both the protection schemes

10 Answers   ABB,

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Which has more losses, AC or DC??

4 Answers   Infosys, TATA,

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what is a drive ?

3 Answers  

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hi can you give any body fault level calculation, generator fault level calculation,transformer fault level calculation for system fault level with equation? i have 3.3kv generation voltage three gas gen sets, one is 1.9MW,2nd is 2.5MW,& 3rd is 3.8MW & i have 11 kv generation voltage one gas gen sets is 3.8MW, we are step up to 22kv by transformer

3 Answers   Hindalco, Piramal Healthcare,

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