directional relay is typically used to respond in fault condition who it can be used just as reverse power protection which purely senes direction reversal to operate a circuit breaker?

1 Answers  

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what happen if generator exitation lost?

7 Answers  

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how to calculate the no load current in transformer?

0 Answers  

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I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?

0 Answers   Siemens,

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WHAT IS SPEC OF CLEANROOM MOTOR AND LIGHT FITTINGS?

0 Answers   Apotex, JLL,

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How wti of transformer works?

5 Answers   Vedanta,

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when we design electrical schemes of 11/.415kv distribution..wen and were should we show the relays??what is the function of it?for example..we place EFR Relay CT between transformer neutral link and transformer earth.Like this what are the other type of relays we should use?why?where?Explain please..Thank you

0 Answers   ETA,

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What is the Ideal Earth to Neutral Rating for Techonology Equipment like Routers, Switched, PABX, Computers etc etc?

2 Answers  

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What is Harmonics & what are its efect & which harmonic is dangerous

5 Answers   IBM,

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we have two motors 1250kW,6.6kV to be coupled on the same shaft ,so please provide assistance for their synchronisation.

0 Answers  

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what is the difference between the characteristics of two different phase bushing of any transformer

0 Answers   NIT,

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how a synchronous motor is used as a resistor,capacitor and an inductor?

3 Answers   Technocon Services,

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