is there any difference between protection C.T and measuring C.T?if yes then w

is there any difference between protection C.T and
measuring C.T?if yes then what is the difference?

Question Posted / tushar

4 Answers
12752 Views
BARC, Century Rayon, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

is there any difference between protection C.T and measuring C.T?if yes then what is the differenc..

ct used for protection has to carry full load current and
fault current.ct core shudnt get saturated while carryin
fault current.So the ct used for protection shud hav high
saturation factor.But ct used for measuring shud hav high
accuracy

Is This Answer Correct ?

17 Yes

4 No

is there any difference between protection C.T and measuring C.T?if yes then what is the differenc..

Answer / gunasekaran

protection ct is operating below the knee point voltage but
metering ct is operating almost saturation point.accuracy is
more in metering ct accuracy is not important under normal
condition. metering ct accuracy is 25%to 120% of the rated
current but protection ct is not like that suppose the ct
5P10 and 20VA burden 10times current in primary 5% error is
acceptable up to 10 times current it will feed 20VA burden

Is This Answer Correct ?

9 Yes

2 No

is there any difference between protection C.T and measuring C.T?if yes then what is the differenc..

Answer / d.lakshmi narayana

The difference of protection ct & measuring ct is the
protection ct secondary current is very accuracy .Ex 600/1A
ct is the sec current is Exactly coming 1A But metering ct
is not accuracy That same ct is coming Sec current is
0.98--0.97 A

Is This Answer Correct ?

2 Yes

4 No

is there any difference between protection C.T and measuring C.T?if yes then what is the differenc..

Answer / ahir ashish

protection ct is depand upon the ratio error and measureing
ct is depand upon phase angle error.

Is This Answer Correct ?

2 Yes

4 No

Post New Answer

More Electrical Engineering Interview Questions

operation of protection relay watchdog contact?

0 Answers L&T,

Can you use step up generator transformer of voltage ratio 16.5kv/420kv in place of step up generator transformer 15.75kv / 420 kv

1 Answers

I have been using an 600VA with 0.6 p.f UPS with my desktop which has 450W power supply unit. Can anyone explain how can this happen . Because the output of the UPS is 360W (600*0.6) (<450W)

0 Answers

How to calculate busbar size & what is the procedure we make for determine that?

35 Answers Auko Tex, Integra, PowerTech, Shadhin Group,

for leading power factor penalty by SEB why

2 Answers

What should be the Sandwitch type Al. bus bar capacity for 2 M.W.Gen. set, having continuous full load current- 3463 Amps,ambient temp.- 50 Deg. C., Required temp. raise-20 deg.C., it will run 24 hrs, 365 days on full load, required highly reliable.

0 Answers

Can we use generator transformer as step down transformer? How?

3 Answers

Is earthing done for AC or DC or both?

6 Answers

WHY WE GENERATE 3 PHASE POWER ONLY AND NOT 4 OR 5 OR 6 PHASE??? PLS REPLY.

7 Answers

I am getting above 60 V as open delta voltage against single phase unit ICT at tertiary delta formed and ICT getting trippped on NDR. ICT tested and found in order. PTs provided on tertiary are tested and in order. what may be the reason?

0 Answers

What will be the output voltage of a transformer if it is primarily energized from a square wave voltage source?

0 Answers HPCL,

Why synchronous motor is used in power factor improvement,dc series in lift

0 Answers

For more Electrical Engineering Interview Questions Click Here