how df/dt relay operates & how it works?

Answer Posted / k.prakashchandra

The relay measures rate of drop in frequency ,which is due sudden increase in load or decrease in generating capacity . When df/dt exceeds the set value ,the relay closes the trip circuit.

Is This Answer Correct ?    2 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Explain the different regions in frequency response?

645


can we find the inductance of a induction motor?

1557


hai now i am working as a electrical design engineer in construction field can i get a job in oil and gass field or power plant project as a electrical design engineer?

1459


what is the safety of voltage power transformer(2250KVA0

1555


What is the complete procedure of erection of electrical panel in industry

1384






how electical engineer is related to apsrtc (general) post? if they ask a question in interview as why did u choose this job what shd be answer

1645


what is mean by NPS (Negative phase sequence)fault? what is the difference between EFR & OCR faults?

1779


How to calculate size of HT breaker with the help of Amp (current)? Please provide answers with examples.

1909


we have 15 ampere variyac but we want 30 ampere variyac what we do

1423


Both generator parallel condition shared load equally but one genrator taking ampere more than the other what are all the causes to make like this

1243


Explain about c.t?

706


sir i have a car stereo system and there is jack on him so can u tell me a way to find out their power terminals on the jack or on the circuit board"

1566


what is the need of starter in tube light and what type of starter is used in that?

1518


How to select HT/MV cable size ?

2003


In Power cable specification what is U0/U and Um.

3224