Answer / k.prakashchandra

LBB relay is for failure of breaker to trip , and back up protection relay ( usually EM ) is for failure of main relay ( usually electronic )

what you mean by vector group of a 3 ph transformer

1 Answers  

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what is phase to phase fault? what is line to line fault?

6 Answers  

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Why electricity in India is in the multiples of 11 like 11kv, 22kv, 33kv

2 Answers   KPIT,

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how to calculate ups and battery rating

2 Answers  

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If not into production, how far did you follow the design and why did not you see it into production?

0 Answers   Bharti, Havells, Intel,

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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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What is rotary phase converter?

0 Answers  

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what you have to see after one week or month from the day of installation of transformer ?

0 Answers  

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What is lifting power for 1 wb/m2 and 1 A magnet?

0 Answers   Techno Labs,

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The magnitude of sum of two sinusoidal av voltage is equal to 230 volt.the magnitude of each individual voltage is also equal to 230 volt.what must be the phase difference between voltages?

0 Answers   PGVCL Paschim Gujarat Vij Company Limited,

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which tap of the transormer you will use in critical condition(worst)?

1 Answers  

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Why we are mention U1, V1, and W1 in primary side of transformer give technical reason

1 Answers  

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