What was the Dg set radiator and lube oil temperatures trip in ACB

0 Answers   Gland Pharma,

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Why scr and igbt used in  ups systeam ????

1 Answers   JLL,

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why induction motor speed is decress with increase in load? how synchronous motor speed is constant?

1 Answers  

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how to determine capacitor bank capacity of one plant..

2 Answers   Dalkia, SPDC,

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In IDMT RELAY the term minimum (M) indicates what?

7 Answers  

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What is difference between SMC supportg and Glass Fibre Reinforced Plastic Support.

0 Answers  

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Draw the vector diagram and condition for the following: 1) Dyn1 2) Ynd0 3) YnYn0

0 Answers  

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is there any concept of armature reaction in Induction motor?

4 Answers  

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Generally in AC we consider voltage, frequency and phase sequence for parallel operation ... Can we parallel two DC battery chargers? If yes, then what precaution to be taken when we parallel two DC power?

5 Answers   Reliance,

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Resistance of low voltage side of transformer compared to high voltage side is A less B equal C more D depens on design

1 Answers  

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we have a lot of model of rectifier but thyristor rectifier is the most rectifier that use in power system. Do you know why this rectifier is used?

0 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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