In what circumstanced the CT used for protection relay will be saturated?and w

In what circumstanced the CT used for protection relay will
be saturated?and what will happen to the relay is the CT is
saturated?

Question Posted / velulu

3 Answers
6642 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

In what circumstanced the CT used for protection relay will be saturated?and what will happen to t..

Answer / nilamani

if we will operate the CT in open circuit then due to heavy
magnetising current due to primary winding will effect the
saturation ll be affected.

Is This Answer Correct ?

5 Yes

1 No

In what circumstanced the CT used for protection relay will be saturated?and what will happen to t..

Answer / tameshwar singh

The CT saturation occurs when secondary winding is kept
open. At this time there is no demegnatising current flows
in secondary winding and due to this primary winding will
carry very high megnatising current.As the high megnatising
current produces high megnatic flux which causes the CT
core saturation

Is This Answer Correct ?

5 Yes

1 No

In what circumstanced the CT used for protection relay will be saturated?and what will happen to t..

Answer / santhosheee

Normally Protection CT will designed by some saturation
level ie Knee Point Voltage. its depepending upon the
protection level. for example if any fault the voltage will
build up in the CT because its transfomer.according to
fault level the manufacturer designing the CT with some
saturation level. If any heavy fault Like lightning,( some
time substation system will affect heavy lightning ) may
be that time and above knee point voltage the CT will be
saturate. its like a short circuit in the CT winding. so
flash over may occur in the CT.

Is This Answer Correct ?

5 Yes

5 No

Post New Answer

More Electrical Engineering Interview Questions

what is IDMT relay.

4 Answers Birla,

An input device is interfaced with Intel 8085A microprocessor as memory mapped I/O.The address of the device is 2500H.In order to input data from the device to accumulator,the sequence of instruction will be

1 Answers GATE,

electical engg basic question

1 Answers Power Plant,

how to identified power tranfer line is how much KV????

5 Answers Essar,

why noise occurn when transformer is working ?

1 Answers Honda,

What is the previous name of Cox's Bazar

0 Answers

why generation is done in delta nad transmission in star? brief

3 Answers

where was current transformer protection units used and why??