what is the diffrantial relay???????why we use it on the MDB
- 5 Answers
- 7126 Views
- I also Faced
- E-Mail Answers
Answer Posted / sudheer
DIFFERENTIAL RELAY is used to sense generator supply in two
different locations. in generator out put leads are six. in
three phase winding- three leads of begining of coils and
three leads of ends of coils.three leads are named R,Y,B
and other three leads are R1,Y1,B1. we make star connetion
by joint R1,Y1,B1 and make neutral point by this
junction.we ground this neutral.we provide three CT'S in
RYB side and three CT'S in R1 Y1 B1 side.
if any fault occurs in winding between RYB and R1 Y1 B1 the
resultant supply operates the differential relay and the
generator stops automatically.
| Is This Answer Correct ? | 6 Yes | 2 No |
Post New Answer View All Answers
In synchronization circuit what is the function of Interposing voltage transformer(IVT)and Reverse voltage transformer(RVT)
can anyone explain the star-delta motor control wiring ,which wire go where and how they operate?
Define conversion efficiency of a power amplifier.
hi friends i m from electrical branch and seeking for tech. + apti. both papers of hpcl plz get it available as soon as possible
explain remenance . differentiate high remenance type ct & low remenance type ct
How to decide no. of Step and Kvar for APFC Panel 40 kvar MD: 33.12 KVA Avg pf : 0.8540
difference between main metering kiosk and check metering kiosk
Do any one know exacatly when the results for NHPC held on 8th march 09 for engineering trainees will be released ?. if so please post it, i'm eager to know it.
how to make an earthing certificate
can any one suggest paper presentation topies for electrical engg?
What is the loss of power of transformer 220kv/33kv,63/80mva of % imp12.05 at 80%load
Classify milling machines.
What are the reasons for the parallel operation of transformers?
Comparision of Air break circuit breaker, SF6 Circuit breaker and vacuum circuit breaker.
WHY SEPARATELY EXCITED MACHINE NEEDS EXCITATION BY DC SUPPLY WHY NOT BY AC
