Interested to Buy Any Domain ? << Click Here >> for more details...
Why ct secondary is not kept open while primary charged. Answer in terms of ct parameters.
- 4 Answers
- 6367 Views
- Power Grid, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / aashish
Because a very high voltage is generated in the secondary due to large no of turns so if open circuited ct will get damage
| Is This Answer Correct ? | 14 Yes | 1 No |
Answer / raja
Understand CT is a voltage step up transformer.
HT side has higher voltage but low current.
LT side has lower voltage but high current.
So for CT of rating 500/1 Amps, 500 Amps side(Primary of CT) has very low voltage and 1 Amp side (Secondary of (CT)
has very high voltage(Insane value in KVs).
This high voltage is beyond the maximum impulse withstand voltage of the CT and it blasts the CT. Hence secondary is always short circuited.
Current and voltage are inversely proportional.
| Is This Answer Correct ? | 5 Yes | 0 No |
Answer / vipin singhal
when secondary is open then in primary flows very large current which burn the winding of the core.
| Is This Answer Correct ? | 8 Yes | 4 No |
Answer / gautam
if we open circuit the secondary terminal current across this terminal falls to zero. as VI is constant for a Xmer voltage across secondary side increase drasticly,which results electrical breakdown across secondary.
| Is This Answer Correct ? | 1 Yes | 0 No |
why we use the fuse in only one wire? althrough in ac current the current flows in both directions. why the neutral wire can be taken half the magnitude of phase wire while same current returns from neutral wire?
IF we have 500kva transformer & know the current on HT & LT side, how can we consider for its breaker?
Why HT 11 KV Slipring Motors are connected in star ?
DEAR SIR,I GOT THE CALL LETTER FROM RRB, SECUNDERABD AS A JE-II SO PLEASE PROVIDE ME SOME MODEL QUESTION AND ANSWER PAPERS AND LAST YEAR QUESTION PAPERS
What is reactance? what is the function in Auto transformer and why high leakage reactance?
how to carried out DAR test in 11 KV Alternator ?
How we calculate DC inducation moter Amp? Sir pls give me formula......
Why is the uniform distribution of the capacitor discs in a suspension type insulators essential , what can u do to improve the string efficiency ?
Differentiate between digital phase converter and ordinary phase converter.
Before i went to bed my master bathroom lights were working fine. At 2 am, when I went to use the lights, none of them were working. The outlets throughout the bathroom work, but the lights and fan above the toilet don't. I have two panels of switches. The one panel has four switches. One of the switches turns on the hall light, and that works. The other three are to other lights, and they don't. The other panel has three switches. One of those is to the fan, and the other is to a light above the toilet. The other is a to light that is also on that other panel. I tried the breakers, and the one that turns off the outlets, marked for the bathrooom, turns on and off the outlets. None seemed to be tripped. I checked the lightbulbs, and they are fine. Please help
what is meant by leakage current of a capacitor?
what is MULTIPLYING FACTOR in substations??
-
Civil Engineering (5086) - Mechanical Engineering (4456)
- Electrical Engineering (16639)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
