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  1. BassamD

    Same CT for phase and residuel meaurements

    I have 2 protective relays (one is an O/C and the other in only a resisdual Wattmetric protection used in case of Petersen Coil earthed system).I use the same CTs for the 3 phases O/C protection and the Summation method of these 3 CTs to supply the residual input of the other relay. Is there a...

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