why any inductive load need free wheeling diode?

4 Answers   Essar,

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what about the power of wattmeter at starting and loding?

0 Answers   TATA,

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How vaccum is formed to create a vaccum interrupter or anything related with vaccum?

6 Answers  

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I have 2 Nos of 2500kVA 33/0.415V cast resin transformers. How to decide on ampere rating of HT Panel? Also advise me how many panel RMG i have to consider whether 4 panel ok?

1 Answers  

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Hi.I want to ask how to calculate contactor rating current? for example I have 460 V , 100 A (induction motor) calculate contactor rating current?

2 Answers  

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How much allowable difference current between on three phases Dear sir, We have a 1870 KW HT motor, 11 Kv supply,FLA-120A,2870 rpm,2-pole squirrel cage induction Motor.And stator is connected in star connection with Liquid resistance stater to limit the starting current.It has coupled with Centrifugal air compressor.My question is it is loading 73% of FLA taking R-phase 86.7 A, Y-phase-85.4A,B-phase- 78.3A.why the B phase current is that much of difference.Is it allowable, or any one tell me how much allowable current.If any method to calculate.

1 Answers  

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how to calculate the current if i know power in MW and voltage 11kv/415v and also want to know that incoming cables for trnsformer

6 Answers   Daikin, KOC, Reliance,

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Hi How can you start-up the 40w tube lite with 230v AC/DC without using any choke/Coil.

5 Answers  

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When do you use a VFD motor?

1 Answers  

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what is rated voltage?

1 Answers  

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expansion of rccb

3 Answers  

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Why a tesa lamp is glow between two phase?

0 Answers  

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