CT

why we ground the one terminal of ct.

 

[jwerthman]

Instrument transformers (CT's and VT's) should always be grounded to avoid high voltages from being capacitively coupled from the primary to secondary windings. Ungrounded instrument transformers on high voltage equipment are a serious safety hazard.

 

[busbar]

thread238-25701
thread237-24644
thread238-18531
thread238-16877
thread238-12608

http://www.geindustrial.com/products/applications/GET-97D.pdf

http://www.powellelectric.com/ptb_pdf/ptb87.pdf

http://standards.ieee.org/reading/ieee/std_public/description/relaying/C57.13.3-1983_desc.html

 

[jbartos]

Suggestion: Wherever the application does not preclude it. If the application precludes it, then there is no ground on the CT secondaries.