My requirement is 1VA,50/5A Current Transformer for
Metering .If I select 15VA , 50/5A CT.Is there any
possibility of Technical Problem ?
Answers were Sorted based on User's Feedback
Answer / c r venkatesh
Absolutely no problem.you can always use higher burden CT'
without any problem
Is This Answer Correct ? | 11 Yes | 1 No |
Answer / roy
Hi ,
Yes there is . and a highr rated VA is never recommented
for metering ( again it depends the accuracy but still not
used as per IEC)
Note:The accuracy class will not be guaranteed for burdens
above rated burden or below 25% of the rated burden.Check
IEC 60044
Amd more interstingly , we are allowing or excepting to
saturate this metering core during fault to protect the
metering Equipment reff. IEC 44
Is This Answer Correct ? | 3 Yes | 0 No |
Answer / chandru_williams
no problem at all when we increase the burden . But It
should be noted that the current ratio should not be
increased, since it leades to sensing problem which inturn
hinders the metering values.
Is This Answer Correct ? | 3 Yes | 1 No |
Answer / anbuselvan
No problem.
Bcaz CT is an Instrumental Transformer(i,e.,Measurement of
High rating current) to measure only Current.
So there will be no of tapping for each range of current.So
that it will easily sense the rating which u set.
Here both your current rating is same.so no problem at all,
even if the voltage varies.
Is This Answer Correct ? | 2 Yes | 1 No |
Answer / satvinder kumar
50/5 1va is suitable for bar primary ct if you go for
higher 15 va then it is good to opt wound primary ct{WPL}
OTHERWISE THE SIZE OF THE CT WILL INCREASE
Is This Answer Correct ? | 1 Yes | 1 No |
I need the proper answer on :- What is the Earthing Value as per the standard for Raw power and UPS Pit and in panel /DB N-E value ???
Is your generator is automated or manual if so do you know the circuits?
Hi friends. is it possible that SCADA System through RTUs can connect Via PLCC Communication carriers ? thanks
What is NGR . What is the purpose of 10 sec ,60 sec rating of NGR.
what is working of communitator in a dc generator?
Hai I have 2500KVA,Transformer,13.8KV/380.DELTA/STAR.How much load that I can take interms of current?How can I calculate also when I have loads in KW?
in case of three phase induction motor,when it is connected to three phase supply,why the magnetic field is rotets around the armeture?
why we are caling 440 volt 3 phase supply instead of 660 volt 3 phase supply? because each phase as a voltage of 220 volt. if anybody know the answer for my question please send it to my mail id. thank you.
3 Answers College School Exams Tests, Jindal Steel and Power, JIOL, NEC,
Can i use to 3 phase 4 wire energy meter inplace of 3 phase 3 wire energy meter ?
How to Measure A.C Resistance for Earthing ?
we often use the word HT (high tension) line.or we say HT switch gear, whats does HT basically mean. is it different from high voltage.
how to check 3phase motor winding with help of multimeter?