Why we use auxillary relay ? what is function of differential relay, directional o/c relay?

0 Answers   Century Rayon, Mechanical,

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what is high pot test on 11kv switchgear and how to apply high voltage on panel what is spheare gap and how to determine its celeberation.

1 Answers  

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why reactor is connected before capacitor in APFC panel

2 Answers  

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1 unit or 1 kwh means how much kva

7 Answers   TATA,

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what is power factor ? why is it so important?

2 Answers   Telco,

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What is meant by CFL & PL lamps

1 Answers  

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A group of machines (wind turbines) connected with 33KV feeder and each machines are having individual VCB. The 33KV feeder connected with 110KV/33KV substation. The 33KV feeder tripped by over current at Substation and fault recorded at Substation as OC-R&Y phase. Same time the group of machines VCB tripped by over voltage, the fault recorded voltage was above 66KV by numerical Under/Over voltage relay. While grid drop time, this much of voltage hike is possible?

1 Answers  

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Which protection detects both AC and DC?

3 Answers   Megatron Solutions,

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how can we decide where we have to DYn11 or other vector group transformer

4 Answers   BSL, Knight Frank, Security Printing and Minting Corporation of India Limited,

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is high voltage or high current is danger

16 Answers   L&T,

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how the voltage between all the three phase is zero can any body explain me

5 Answers  

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Why transformer, generator, ups rating kva?

2 Answers  

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