Answer / zahrani

To Trip circuit breakers remotely .
Example : They are used in "ESD"(Emergency Shutdown system )to trip Circuit Breakers.

Answer / sa

TRIP CIRCUIT BREAKER REMOTELY..
EXAMPLE: ESD SYSTEM (EMERGENCY SHUTDOWN SYSTEM)

Why we are testing a tan delta test in transformer? which purpose conduting that test? and time priode test?

1 Answers  

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WHY STABILIZER SHOULD USED

2 Answers  

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what is the primary current in 415/415 v when secondry of dry type transformer is shorted.?

3 Answers  

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why neutral used in three phase motor connection?

3 Answers   BEL,

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what are the duty ratings in DG sets?

1 Answers   L&T,

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I have a question, I visit 01 site and face a problem, there is 2.5 ton Air Con working, when air con compressor is running at that time rectifier voltages are increasing upto 290-295 v and rectifier is giving main high alarm (rectifier is APC single phase), before starting compressor rectifier voltages was 230v. when air con is going off rectifier voltages are decreasing smoothly at its actual voltages 230v. Load on Genset phases is this: Red-13.5 amp AC (Air Con load), Yellow-1.7 amp AC (BTS lights etc.) and Blew-4 amp AC (telecom system load), Genset phase to phase and neutral to phase voltages are also ok. These are 10 sites having same system and same rectifier APC brand at every site 02 genset are working but the problem is same at all these 10 sites. What will be the reason behind???

1 Answers  

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back emf of motor at the time of starting ?

2 Answers  

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what is differance between kvarh $ kvah

1 Answers  

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why induction motor takes high current?

1 Answers   Emerson,

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what is the diffrence between kav and kvar?

5 Answers  

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defult setting in p220 micom motor proction relay for 11kv,640kw,f.l.a.-40a,1440rpm ht motor?

0 Answers  

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How to know the Max. current caring capacity of the cable by its size ?

0 Answers   SFPL,

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