Alstom MiCOM P54 Series - Page 273

Operation P54x/EN OP/La4
MiCOM P543, P544, P545 & P546 (OP) 5-99
OP
When enabled, the following signals are set by the under/overfrequency logic according to
the status of the monitored functions.
F<1 Timer Block (DDB 1149) - Block Underfrequency Stage 1 Timer
F<2 Timer Block (DDB 1150) - Block Underfrequency Stage 2 Timer
F<3 Timer Block (DDB 1151) - Block Underfrequency Stage 3 Timer
F<4 Timer Block (DDB 1152) - Block Underfrequency Stage 4 Timer
F>1 Timer Block (DDB 1153) - Block Overfrequency Stage 1 Timer
F>2 Timer Block (DDB 1154) - Block Overfrequency Stage 2 Timer
F<1 Start (DDB 1155) - Underfrequency Stage 1 Start
F<2 Start (DDB 1156) - Underfrequency Stage 2 Start
F<3 Start (DDB 1157) - Underfrequency Stage 3 Start
F<4 Start (DDB 1158) - Underfrequency Stage 4 Start
F>1 Start (DDB 1159) - Overfrequency Stage 1 Start
F>2 Start (DDB 1160) - Overfrequency Stage 2 Start
F<1 Trip (DDB 1161) - Underfrequency Stage 1 Trip
F<2 Trip (DDB 1162) - Underfrequency Stage 2 Trip
F<3 Trip (DDB 1163) - Underfrequency Stage 3 Trip
F<4 Trip (DDB 1164) - Underfrequency Stage 4 Trip
F>1 Trip (DDB 1165) - Overfrequency Stage 1 Trip
F>2 Trip (DDB 1166) - Overfrequency Stage 2 Trip
Inhibit F<1 (DDB 1167) - Inhibit stage 1 Under frequency protection
Inhibit F<2 (DDB 1168) - Inhibit stage 2 Under frequency protection
Inhibit F<3 (DDB 1169) - Inhibit stage 3 Under frequency protection
Inhibit F<4 (DDB 1170) - Inhibit stage 4 Under frequency protection
Inhibit F>1 (DDB 1171) - Inhibit stage 1 Over frequency protection
Inhibit F>2 (DDB 1172) - Inhibit stage 2 Over frequency protection