GE Power ManagementL90 Line Differential Relay5-535 SETTINGS 5.5 GROUPED ELEMENTS55.5 GROUPED ELEMENTS 5.5.1 OVERVIEWEach protection element can be assigned up to 8 different sets of settings according to SETTING GROUP designations 1to 8. The performance of these elements is defined by the active SETTING GROUP at a given time. Multiple setting groupsallow the user to conveniently change protection settings for different operating situations (e.g. altered power system con-figuration, season of the year). The active setting group can be preset or selected via the SETTING GROUPS menu (seethe CONTROL ELEMENTS section). See also the INTRODUCTION TO ELEMENTS section at the front of this chapter.5.5.2 SETTING GROUPPATH: SETTINGS Ø GROUPED ELEMENTS Ö SETTING GROUP 1(8)Each of the 8 SETTING GROUP menus is identical. SETTING GROUP 1 (the default active group) automatically becomesactive if no other group is active (see the CONTROL ELEMENTS section for additional details).5.5.3 LINE DIFFERENTIAL ELEMENTSPATH: SETTINGS Ø GROUPED ELEMENTS Ö SETTING GROUP 1(8) Ö LINE DIFFERENTIAL ELEMENTS SETTING GROUP 1 LINE DIFFERENTIAL ELEMENTS See page 5-53.MESSAGE LINE PICKUP See page 5-58.MESSAGE DISTANCE See page 5-60.MESSAGE POWER SWING DETECT See page 5-72.MESSAGE LOAD ENCROACHMENT See page 5-78.MESSAGE PHASE CURRENT See page 5-86.MESSAGE NEUTRAL CURRENT See page 5-92.MESSAGE GROUND CURRENT See page 5-99.MESSAGE NEGATIVE SEQUENCE CURRENT See page 5-101.MESSAGE BREAKER FAILURE See page 5-103.MESSAGE VOLTAGE ELEMENTS See page 5-112.MESSAGE SUPERVISING ELEMENTS See page 5-118. LINE DIFFERENTIAL ELEMENTS CURRENT DIFFERENTIALMESSAGE STUB BUS
