Which ciass CT can be use in diff. protection. Can be use 5p20?

Categories >> Engineering >> Electrical Engineering
Suggest New Category

Which ciass CT can be use in diff. protection. Can be use
5p20?

Question Posted / impatelunava1970

5 Answers
12489 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Which ciass CT can be use in diff. protection. Can be use 5p20?..

Answer / amit khamesra

Conventionally only PS class CT shall be used for unit
protections. But now a days, with the use of miro processor
based relays having facility of low impedance or biased
differential protection, 5P20 may be used as biasing in the
relay takes care of the unmatched characteristics of the
both side Cts.

Is This Answer Correct ?

10 Yes

0 No

Which ciass CT can be use in diff. protection. Can be use 5p20?..

Answer / avdhesh

Class 5p20 CT is a protection class CT which is used for
normal protections. For differential protection you must
use class PS CT.

Is This Answer Correct ?

13 Yes

4 No

Which ciass CT can be use in diff. protection. Can be use 5p20?..

Answer / persistence

yes 5P20 class CT can be used for differential
protection,In our industry they have been used for
transformer differential protection,transformer being 10 mva
and for bus differential protn. class PS has been used.

Is This Answer Correct ?

10 Yes

5 No

Which ciass CT can be use in diff. protection. Can be use 5p20?..

Answer / dharmaraj

For diff.protn you must use ps(or) px class CT.

Is This Answer Correct ?

5 Yes

2 No

Which ciass CT can be use in diff. protection. Can be use 5p20?..

Answer / dheena hitech

For diff protection we should be use PS or PX class Because
of yjat one ine is spl. class for diff and Dist protection

Is This Answer Correct ?

1 Yes

2 No

Post New Answer

More Electrical Engineering Interview Questions

why anti pumping relay is not given to tripping coil of the breaker? why only to closing coil?

2 Answers INEL, Siemens,

What is current divider rule (cdr)?

0 Answers

What is signal flow graph?

0 Answers

transmission line losses

1 Answers SVS Constructions,

Brief use of isolation transformer & how it works.

1 Answers

we have 400kv/6.6kv transformer ,it has total 9 taps on HV side with normal tap on tap no 5.when we took the ratio test we observed that ratio was decreasing from tap 1 to tap 5 and was found increasing from tap 5 to tap 9.What is the reason?if anyone have related document then please send me on the email id ankushbahale@gmail.com......plz plz

1 Answers

What is the Working principle of ELCB and RCCB?

1 Answers Geo Miler, L&T,

why dc is used in control circuits for MV & LV switchgeras instead of ac

0 Answers

ASTM D 3455 - Standard Test Methods for Compatibility of Construction Material with Electrical Insulating Oil of Petroleum Origin has been used for Testing Transformer Oils with a product placed in it. Aged Control Oil has a Power Factor of 0.032% at 100°C. Aged Oil with a Test component has a Power Factor of 0.093% at 100°. Is this increase acceptable? If not why? How much increase is acceptable?

0 Answers

why the protection turbo generators is most complex?

0 Answers Infres, L&T,

Why AC current leads voltage in capacitor and how?

0 Answers BMB,

Is your generator is automated or manual if so do you know the circuits?

7 Answers RRB,

For more Electrical Engineering Interview Questions Click Here