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EDR-5000
IM02602007E
•
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);
•
81U
Δ
R – Underfrequency and DF/DT (absolute frequency change per definite time interval);
•
81O
Δ
R – Overfrequency and DF/DT (absolute frequency change per definite time interval); and
•
78V – Vector Surge.
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