Answer / mostafaghodrat

protection from motor becoming a generator.(reverse power)
Secondary zone of protection for internal faults.(directional)
good luck

what is the maximum current carrying capacity of a 95 sqmm cupper under ground cable laid partialy in land and partialy in ground?

4 Answers  

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what happens when we apply dc to a transformer

7 Answers   Siemens,

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Usually in the L & T make MCC feeders' power circuit,we have BMR after the MAIN CONTACTOR.,can we interchange their position, keeping the control logic same???

0 Answers  

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what is the differnce b/w voltage and current

8 Answers   Steel Plant,

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why some time Railway Fan not Rotate,But after a small rotation by human then it rotate normally? Why?

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ow can i get certificate of competency as electrical supervisor and my diploma in electrical engineering from jalgaon.

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any calculation method for decide cable size for current?

1 Answers  

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why we use circuit breakers for switching instead of normal switching device?

0 Answers  

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0 Answers   Hyatt,

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wat is the difference between BE &BTECH.

8 Answers  

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Types of circuit breaker

1 Answers  

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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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