Answer / k.prakashchandra

The electronic relays do not have heavy duty contacts and they are usually self reset. Tripping relay is required to take high trip currents and they are to be reset . Otherwise the contacts of e- relays will burn out and breaker may close without clearing fault . In addition , a back up EM relay may be required

What is LCI drive & how does it work & why it is used?

1 Answers   EIS, ONGC,

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assume we are put both df/dt and vector surge relay in same bus the df/dt relay setting is +5 hz an -5HZ. we want operat the vector surge relay before the df/dt how i calculate the setting of the vector surge relay.

1 Answers  

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In control room of our one plant there is a continuously the incoming power goes to PC is vary,means in stabilizer it continuously indicate from high input to low and low input to high. what is the reason and its solution.

0 Answers  

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SUPPOSE A CIRCUIT BREAKER HAS TRIPPED THE THE LINE WHEN A FAULT OCCUR ON IT.NOW WHEN THE FAULT HAS BEEN CLEARED, HOW THE CIRCUIT BREAKER WILL CLOSE AUTOMATICALLY NOT MANUALLY.

6 Answers   Bureau of Energy Efficiency, DVC,

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static chagre

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Can motor act as generator (OR) vice versa? explain how does it do please post the answer technically

11 Answers   GM General Motors,

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How does the phase sequence controller works, how it identifies the phases? confirm working principle

0 Answers  

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when generator short circuit condition, the current how dissipates. or at short circuit voltage not available then current how can flow?

0 Answers   Power Grid,

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What is meant by IP55 motor.Where it is used?

2 Answers   Zuari,

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what is diff. b/w of earth & neutral?. why we are separately using ?

3 Answers  

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1.WHAT IS A SMART CAPABLE DB ( DISTRIBUTION BOX) ? 2. HOW TO DECIDE THE TYPE OF DB TO BE USED ( RECESSED/ PLUG TYPE/ SMART ETC ETC? 3. WHAT IS MILLENEUM BUS BAR USED IN DB? 4.DIFFERENTIATE MCCB AND MCB.

0 Answers  

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how to calculate cable size with respect kw

0 Answers   SPMI,

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