Eaton EMR-4000 - Page 627

EMR-4000 IM02602009E
•81R – Rate of Change of Frequency (df/dt);
•81UR – Underfrequency and Rate of Change of Frequency (df/dt);
•81OR – Overfrequency and Rate of Change of Frequency (df/dt);
•81UΔR – Underfrequency and DF/DT (absolute frequency change per definite time interval);
•81OΔR – Overfrequency and DF/DT (absolute frequency change per definite time interval); and
•78V – Vector Surge.
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