Reset Ratio (Hysteresis) - Deif GPC-3 Designers Reference Handbook

GPC-3 DRH 4189340587 UK Protections
Trip of the NEL groups due to the load of a running generator set will reduce the load on the busbar and thus
reduce the load percentage on the running generator set. This may prevent a possible blackout at the busbar
caused by an overload on the running generator sets.
NEL groups are set up in menu 1800 to 1910.

5.5 Reset ratio (hysteresis)

The reset ratio, also known as hysteresis, of the individual types of protections (f, Q/P, I and U) can be adjus-
ted in menu 9040. Use the jump function to access this menu.
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