Q.What is the need of doing winding resistance test?
A. For different types of CT 's we have different secondary resistance values which are specified on name plate details.It will mainly depend upon burden to be connected to CT and knee point voltage of CT.
Q.Can this test done by multi meter? or should we use any kit?
A. We can do by using multi meter because CT winding resistance is some what higher so multi meter probe resistance will not effect so much. For better values we can use 1amp winding resistance kit also.
PROCEDURE:
1. Isolate secondary of CT from any other winding.
2. By using multi meter measure winding resistance.
3. Repeat the same for different taps if it has tappings.
A. For different types of CT 's we have different secondary resistance values which are specified on name plate details.It will mainly depend upon burden to be connected to CT and knee point voltage of CT.
Q.Can this test done by multi meter? or should we use any kit?
A. We can do by using multi meter because CT winding resistance is some what higher so multi meter probe resistance will not effect so much. For better values we can use 1amp winding resistance kit also.
PROCEDURE:
1. Isolate secondary of CT from any other winding.
2. By using multi meter measure winding resistance.
3. Repeat the same for different taps if it has tappings.
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