Page 359 - Practical Power System and Protective Relays Commissioning
P. 359

354  Practical Power System and Protective Relays Commissioning


























































            FIGURE 20.6.5 Primary injection of reference circuit F1 and bus section Bus Section (BS).

            4. Trip test
                  This test measures the operating time of BBProt, including trip relays
               time, and measures the overall operating time to trip the CB practically
               in the BBProt scheme.
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