Simultaneous trip of incoming and outgoing breakers of
400kv/220kv trnasformer. What are the probable causes?
Answer Posted / raj kumar
Incomer side or outgoing side current transformer terminals connected wrongly by mistake.so reverse current will flow in the secondary.secondary is connected to the metering device and protective devices.so protective devices will sense the reverse current flow.if that current reaches certain level,this protective device trip the circuit breaker.
If both side CB's are tripping simultaneously means transformer winding side only fault happened.
Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
How can we find out LT UG cable fault (size,from-4*25mm sqr to 4*300mm sqr)? How mani types UG cable faults?
I want to merge a cable..in between two metering Cubicals which contains CT's and PT's and Energy meter..before taking merger..what are the common things required?
Hi, This is Laila. I am selected for syndicate bank interview. Could you please share your views and the questions asked if you have faced the interview My email id is laila_honey09@yahoo.com Please send as fast as u can.Thank You Thanks... Laila.
Keywords: Die, Card, Coin, B/N 2 To 12
if a 3phase 100kva distribution transformer , 400 v,50 hz, 4-wire system is loaded at 160 k.w mostly 1-phase Lighting & Airconditioning split a.c load what will be the net effect on the power system in terms of voltage, powerfactor, current , efficiency of xformer
for 11KV OH system what will be typical per KM "R" "L" "C" parameter. for 33KV OH system what will be typical per KM "R" "L" "C" parameter. for 33KV UG system what will be typical per KM "R" "L" "C" parameter.
What is resonant frequency?
What is class ab operation?
1.what is difference between ATS & STS main use. 2.what is difference between ACB& VCB With symobles,and main partes, manimum range. 3.How many types of relays and main function.
What is marx circuit?
How to identify the start and end of 3phase 12 lead motor if U1, U2, etc numberings are lost or erased.
grr resistance & contrator malt continuous
why not starting switch first connect in direct on line starter?????
can anyone please help me to find the rupturing or breaking capacity in KA of circuit breaker (MCCB,VCB,ACB etc) of HT and LT side of a distribution transformer...please help with detailed step by step answer...thank you
difference bewteen reverse current and alternating current