What is the drawback of static coefficients?

0 Answers  

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what will happens if one phase is missing for 33/11kv power transfomer and why?

0 Answers  

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what is the difference between cable routing and scheduling?

4 Answers   Techno Labs,

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Damping resistor provided in open delta (tartiary) winding of a measuring PT at the incoming of a MV inverter drive panel is getting heated up. Can any body explain the reasons and suggest the remedy?

0 Answers   Danieli,

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what is the pressure in side transformer under normal condition?

1 Answers  

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Any one can explain if there is any harm from humming noise heard from air circuit breaker : we have 415 switch board having two incomers from transformers 3.3KV/415V , when bus coupler closed, and open one ACB incomer to work in one of the transformers, the current started hunting around 50 Amps, and heard humming noise from the air circuit breaker, although the load current was only 1200 amps while the ACB capacity is 2500 Amps, and the transformer 1600 KVA. The same didn't happen when taken the other transformer offline. Why this humming noise and current fluctuation? is there any implication or danger, bearing in mind that we just returned everything back to normal and stopped the maintenance of the transformer. Shall we go ahead and ignore this noise?

6 Answers  

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can we use 400w coke instead of 250w choke in 250w fittings

2 Answers  

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What is the test block protection relay if any body know plz explained

0 Answers  

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if we keep frequency constant can we cal a synchronous generator as a dc generator

2 Answers   Cummins,

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What is the drawback of class b amplifier? How is this minimized?

0 Answers  

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How synchronous motor helps to improve PF? plz explain

1 Answers  

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why use in & out Diesel line in dg set.

1 Answers   NHPC,

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