Answer / aman kumar

Basically mcb /mccb work on electromagnetic induction so if dc voltage supply in it then tripping coil in mcb/mccb does not produce magnetic field and so not trip. so it was not work in short circuit condition
On other hand if overload current is high then bimetallic strip in mcb/mccb expand and disconnected the circuit.

why is a power transformer used only occasionally?it is used to step up at generating stations?and that needs to be done all day long !!!!!!!

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PLZ EXPLAIN CORONA,SKIN,BIRD PALE,SPAN,SAG Effects of power cable.

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detailed procedure how we calculate cost for pcc m10 and rcc m20 including centering and labour excluding steel/ iron

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what do you mean by star connection?

4 Answers   Denver, Satyam,

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1.Is there any difference between terminologies,HT-HV &LT- LV? 2.What is the highest transmission voltage level in india?

5 Answers  

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What are the steps for Testing of 6.6KV HT Panels?

5 Answers   BSL,

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Myself completed B.Tech ECE in private university but i am working as an testing and commissioning engineer in electrical field whether i am eligibility to apply electrical licence.

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What is the basic principle of circuit breaker?.. I read that it works on electro-mechanical principle... Does it require both electric n magnetic conversion to act?

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why the vfd motor take current high in vfd panel then mcc panel.current in vfd panel=160A in 93%.and mcc panel it shows 130A. (132kw motor)

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We have received supplies of the ordered material. payments against the supplies also released. Where ST paid 4% against form C. Meanwhile it has been observed that 25% of material supplied was defective. Please suggest whether the issuance of C form from our side would be stopped till settlement of liabilities.

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How to calculate the Meter constant for the given Meter (by using any formula)

4 Answers   HCL, Viva,

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Hello friends i am facing one problem in lighting panel. Frequently neutral link near to MCCB is burning(firing. What may be the reason for this one. Please answer me.

5 Answers  

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