Answer / saish n kharkar

In case of SF6 CB SF6gas is used as arc quenching medium in.
when CB trip the male-female contact (we can say fix and
moving contact otherwise) gets opened at the same time SF6 gas
at particular pressure enters between the contacts and quench
the arc, also act as a coolant and insulating medium.

I have 3 1000 kva single phase transformers and I wish to replace them with one three phase transformer. What is he kva rating of the new three phase, is it 1000 kva also or 3000 kva.

5 Answers   Central Moloney,

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In an panel board if the outgoings are power plugs and motor equipments...what should we choose as the incomer of the of the panel board?? MCCB OR ISOLATOR?? Should we use ELCB protection??if so where??

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how can we test the vector group of transformer

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what is wave trap? And how it works?

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fundamentals of transformers.

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what is the ambient temperature of transformer oil & winding?

2 Answers   Reddy Labs,

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why we used stone chips under the transformer area..

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What is UJT PNP, NPN transistor & working principles?

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how to calculate capacitor bank value to maintain unity power factor plz xplain with some suitable xample?

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MCB is used for high rating &MCB is used for lower rating.What is technical difference between ACB & MCB?

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After synchronization with grid what is the demand value QKVAR and how we will maintain that?

0 Answers  

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