What happen when ct secondary are open circuited? why same
thing is not happen in ordinary transformer?
- 3 Answers
- 6729 Views
- BARC, I also Faced
- E-Mail Answers
Answer Posted / nithi
when SEC of the CT open circuited,
1.high-voltage buil-up in the sec side
2.core saturation-over heat-result in fire(if
prolonged).
these things will not happen in ordinary
transformer.because,
PRIMARY CURRENT IS REFLECTION OF SECONDARY
CURRENT.SO,WHEN THERE IS NO CURRENT IN sec SIDE,ONLY NO-
LOAD CURRENT WILL FLOW IN PY WINDING.BUT IN CASE OF CT,PY
CURRENT IS INDEPENDENT.SO,IF SEC OPENED,NO DE-MAGNETISING
EFFECT &FORCED TO OVERFLUXING CONDITION.
| Is This Answer Correct ? | 22 Yes | 0 No |
Post New Answer View All Answers
What is the high series capacitance winding on high voltage power transformer ?
defination of controlled shunt reactor
List the characteristics of filter?
How does "OUT OF STEP" relay ,for Synchronous motor protection, work?
how braking & making capacity of circuit breaker are calculated?
What will happen if the armature resistance is in minimum position and the field resistance is in maximum position while starting the motor
what is the difference between electrical and electronic choke?
can i use the six sigma method which is used in management area, in state estimation of power systems?
what happen if generator of micro hydro running at only a small percentage of its capacity, as a comparison, if the diesel generator that runs on only a fraction of its capacity there will be a wet stacking
How to design the no. of ceiling fans required in 5mtr X 10 mtr X 3 Mtr hight room?
How to calculate the Efficiency of Chiller
Dear Respected sir how to test ABB REX521 protection relay by relay tester.
What is capacitance?
Why back emf used for a dc motor? Highlight its significance.
WHY IS THE EARTH FAULT CURRENT ALWAYS LESS THAN THE NORMAL CURRENT??
