Protection CT Grounding
Protection CT Grounding
(OP)
For protective relaying circuit such as transformer differential protection, there are two sets of bushing CT used, on the HV side and LV side. The question is where should the CT be grounded? At the transformer side which is in the transformer control panel or the relay side which could be 200 meters away? What about other protection circuit with only one CT? Thanks a lot in advance.






RE: Protection CT Grounding
RE: Protection CT Grounding
For HV side and LV side bct it would be in the relay panel as IEEE standard