Current Transformer Q&A


1.       What is CT
2.       Why CT required
3.       Name plate details of CT
4.       What is the difference between metering core and protection core
5.       Class of accurancy for metering and protection cores
6.       What is special protection core
7.       What is meant by saturation in CT
8.       What is knee point voltage
9.       Manufacturers of CT
10.   CT cost
11.   Testing of CT
12.   Why CT secondary should not be open circuited
13.   Cable size between relay and CT secondary
14.   What is ratio error
15.   100/1 or 100/5
16.   CT rating starts at Min and max value
17.   Different types of CTs
18.   What is burden on CT
19.   How clamp meter works

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