5-196 L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUALGROUPED ELEMENTS CHAPTER 5: SETTINGS55.7 Grouped elements5.7.1 OverviewEach protection element can be assigned up to six sets of settings with designations 1 to 6. The performance of theseelements is defined by the active setting group at a given time. Multiple setting groups allow the user to convenientlychange protection settings for different operating situations (for example, altered power system configuration or season ofthe year). The active setting group can be preset or selected in the SETTING GROUPS menu (see the Control Elements sectionlater in this chapter). See also the Introduction to Elements section at the beginning of this chapter.5.7.2 Setting group 1SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6)Each of the six setting group menus is identical. Setting group 1 (the default active group) is active automatically when noother group is active.If the device incorrectly switches to group 1 after power cycling, upgrade the firmware to version 7.31 or later to correctthis issue. SETTING GROUP 1 LINE DIFFERENTIAL ELEMENTSSee below LINE PICKUPSee page 5-202 DISTANCESee page 5-204 POWER SWING DETECTSee page 5-225 LOAD ENCROACHMENTSee page 5-234 PHASE CURRENTSee page 5-235 NEUTRAL CURRENTSee page 5-247 WATTMETRIC GROUND FAULTSee page 5-255 GROUND CURRENTSee page 5-259 NEGATIVE SEQUENCE CURRENTSee page 5-266 BREAKER FAILURESee page 5-272 VOLTAGE ELEMENTSSee page 5-282 SUPERVISING ELEMENTSSee page 5-294 POWERSee page 5-300
