what is the difference between the 94 lockout relay and 86 lock out relay. I have noticed that the 94 lockout relay is activated when the distance realy is activated and 86 is activated when the 87T differential is activated. but why can't the same lockouts be used for both the protection schemes

10 Answers   ABB,

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Is there any Institution (Not AMIE)for giving B-Tech/M-tech in Electrical engineering for those who r in service? Give the details please.

2 Answers  

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what is the use of choke on tube light fitting

37 Answers   Bhel, Dharma, HSBC, TCS,

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What are the causes of unbalanced current on 34.5kv feeder Ia=0.05,Ib= 0.25, Ic=0.15 and In=0.27 prior to tripping current are balance?

0 Answers  

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Define open loop control system.

0 Answers  

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i heard that power factor(PF) is the main concern for industries, if they are maintaining PF around 0.6 they will be fined for that. now the question is, how can they improve the PF ranging between 0.9 to 0.95 which is safe for them i,e escaping from the fine?

5 Answers  

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can i use the six sigma method which is used in management area, in state estimation of power systems?

0 Answers  

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What is notching in dc machine?

0 Answers  

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Which is stiffer between salient pole rotor and cylindrical rotor synchronous machines? Justify your answer.

1 Answers  

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Why do we avoid electrical conduits in floors at apartments?

0 Answers  

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What sort of protection scheme do you suggest for the protection of a 10 HP motor?

1 Answers   Chevron,

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could an induction motor be used for regenerative braking in electric-train control? in this type of application would some scheme have to be devised to obtain low synchronous speeds while braking? would induction-motor drive, therefore, be suitable for passenger service?

0 Answers  

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