Answer / sameer

transformer is device protected by buchholzz relay from fault (short ckt) in the winding of transformer. capacity above 500 Kva this relay is used.

Answer / e.subhash

pressure relief valve

We have 800KW motor operating at 6600Volt,50 Hz supply.During 1st startup it tripped on overcurrent trip.It's FLA is 88 Amps.The K factor of Thermal overloaaad was set on .94 initially.then we set at 0.97 and then it started fine.i dont understand why it tripped first?What are the protections which comes in picture during starting ?

6 Answers  

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while we select CT, why the CT ratio is divided by 5?? ex:250/5,15VA,CLASS-1 CT.Why it is divided by 5??Help me please

2 Answers  

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galloping in transmission line is due to

2 Answers   DVC,

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what is the role of MPU in DG set

1 Answers   Weltech Engineering,

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what happen when increase or decrease size of lamp,light.glass.

0 Answers  

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what is the dis-advantage of 3 phase 3 wire energy meter?

1 Answers   Exide, Nelco,

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State Maximum Power Transfer theorem.

0 Answers   ABB,

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How to power regulated by AVR in Alternator?

3 Answers   EPGL,

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What is broken wire condition in transmission line?

2 Answers   TATA,

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How to protect a Dosing pumps/any sensitive equipment (single phase) from surge protection inside a food factory.

0 Answers  

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what is reactive poower

3 Answers  

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How to Calculate the current drain in the battery (1.4V) for the 2mins time period?

7 Answers  

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