ABB Relion 670 Series Technical Reference Manual page 12

Table of contents
6
Function block...........................................................................184
Input and output signals............................................................184
Setting parameters....................................................................184
Technical data...........................................................................185
Directional underpower protection GUPPDUP...............................185
Introduction................................................................................185
Principle of operation.................................................................186
Low pass filtering..................................................................188
Calibration of analog inputs..................................................189
Function block...........................................................................190
Input and output signals............................................................191
Setting parameters....................................................................191
Technical data...........................................................................192
Directional overpower protection GOPPDOP ................................193
Introduction................................................................................193
Principle of operation.................................................................194
Low pass filtering..................................................................196
Calibration of analog inputs..................................................196
Function block...........................................................................197
Input and output signals............................................................198
Setting parameters....................................................................198
Technical data...........................................................................200
Capacitor bank protection CBPGAPC............................................200
Introduction................................................................................200
Principle of operation.................................................................200
Measured quantities.............................................................200
Reconnection inhibit feature.................................................203
Overcurrent feature..............................................................204
Undercurrent feature............................................................205
Capacitor harmonic overload feature...................................205
Capacitor reactive power overload feature...........................207
Function block...........................................................................208
Input and output signals............................................................209
Setting parameters....................................................................210
Technical data...........................................................................211
Section 7 Voltage protection........................................................213
Two step undervoltage protection UV2PTUV ................................213
Introduction................................................................................213
Principle of operation.................................................................213
Measurement principle.........................................................214
Time delay............................................................................214
Blocking................................................................................219
Design..................................................................................220
Technical reference manual