What is differential relay? How it operates?
it is a protective zone relay it sence the vector
difference between two or more similar quantities.
generally it is current operated .at normal operating time
the sum of Ia+Ib+Ic=0 ,but in abnormal conditation the
resultant current will not zero some current will flow
through trip coil & trip the circuit. most differential
relays are baised current differential current.
| Is This Answer Correct ? | 6 Yes | 2 No |
when the supply of MSEB is cut off & all the load of the industry is driven on generator at that time the capacitor which is connected in industry for power factor control is switched off why?
i need some project topics along with circuit diagram in the electrical adnd electronics engg and also give ome website regarding projects.my mail id is thenmozhi2k7@gmail.com .please help me.
What is the formula formula for Busbar sizing and what are the things to be consider for Busbar Calculation?
If not into production, how far did you follow the design and why did not you see it into production?
0 Answers Bharti, Havells, Intel,
how to calculate load if i have three phase & single phase connection from power transformer( in term of kw & kva).can i take single phase load/3 for total kw calculation
What safety precaution are to be taken for avoiding electric hazards ?
What are the temperature elements?
what is earthed and inearthed cable or system?
does frequency affects the load? if yes elaborate it.
why the weight of oil in transformer is specified (on the nameplate) in litres as well as kilo grams?
what is the working principle of a DG Set, Alternator, & exiter
1)What will happen when 240 VDC supply is connected to 240VAC supply(DC supply +ve is connected to phase of AC supply & DC supply is to neutral of AC supply). 2)Also what will happen when 240 VDC supply is connected to 240 VAC supply in reverse polarity as of Sr. No 1.
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