Interested to Buy Any Domain ? << Click Here >> for more details...
what will happen if the secondary of current transformer
kept open....
- 16 Answers
- 35279 Views
- KSEB, I also Faced
- E-Mail Answers
Answer Posted / sripellirajukumar
ya ...this is rajukumar testing engineer...
As per my knowledge ...
it is very important that the secondary of a CT should never
be open-ckted,when the primary is carrying a heavy current.
this is so because
1)if the secondary is open,there is no secondary current and
no secondary flux.The large current in the primary winding
establishes a large primary flux which is unopposed,and this
not only results in huge core losses and excessive heating
of the core,but a high voltage would be induced in the
secondary, this posing a danger to the operator
2)the core gets saturated and
3)the insulation of the windings would be dameged
| Is This Answer Correct ? | 65 Yes | 1 No |
Post New Answer View All Answers
I AM GOING TO ATTEND APTRANSCO ON 26TH OCT 08.PLEASE SEND ME ANY MATERIAL OR TYPE OF QUESTIONS OR EXP QUESTIONS.
Discuss the effect of sudden loading of an induction motor
why need to be maintain power factor for industrial customer?
What is the form name of 'c' license, I want to download in web
Why saturation region slowly shifted in the left side?
How cmd is calculated in case of energy neters
how does grading rings & spacers in transmission line works? Working Principle?
what is the min and max ohmic resistance for the earthing rod installed for lighting poles for street light network
PAC and simple Ac different
what is the mechanism of operation of brushless dc motor why is it more wexpensive then ordinary permanent magnet motors
Could u pls tell me the NPCIL electrical engineering interview questions for Executive trainee, and also guide me how to face the interview.
True or false question. 1.The fuse provide phase and neutral 2.power loss in electrical circuit can take place in (resistance or inductance or capacitance). 3.two phase system each phase has separated by a phase difference of (90 or 180 or 270 or 45). 4.3 phase balanced star connected load neutral current shall be (line current or phase current or zero or unity)
I need bhel electrical test pattern & paper
specific difference of ICT&Auto Transformer
What is the BS(British Standard)code for 11kv motor
