knee point voltage

[kandelnpj]

pl explain knee point voltage in current transformer? how can it be tested? what r the advantages to note the knee point voltage

 

[DanDel]

If you are refering to a saturation curve, the knee point is where the CT response starts to change from linear and where saturation sets in. Up to this point, the output is linear to the input. After this point, a large change in the input will cause only a small change in the output.

 

[melone]

Why don't you tell us your problem, and why it needs to be solved. Your orignal post implies that you are out of your specialty (especially since you are a computer engineer).

 

[busbar]

Reference CT "excitation tests" described in IEEE Standards C57.13, outlined at standards.ieee.org/reading/ieee/std_public/description/ dtransformers/C57.13-1993_desc.htm
and, C57.13.1, outlined at standards.ieee.org/reading/ieee/std_public/description/ dtransformers/C57.13.1-1981_desc.html

CT manufacturer’s literature may have similar descriptive information.