GE Multilin B90 Low Impedance Bus Differential System 5-935 SETTINGS 5.5 GROUPED ELEMENTS55.5GROUPED ELEMENTS 5.5.1 OVERVIEWEach protection element can be assigned up to six different sets of settings according to setting group designations 1 to 6.The performance of these elements is defined by the active setting group at a given time. Multiple setting groups allow theuser to conveniently change protection settings for different operating situations (for example, altered power system config-uration, season of the year, etc.). The active setting group can be preset or selected via the SETTING GROUPS menu (see theControl elements section later in this chapter). See also the Introduction to elements section at the beginning of this chap-ter.5.5.2 SETTING GROUPPATH: SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6)Each of the six setting group menus is identical. Setting group 1 (the default active group) automatically becomes active ifno other group is active (see Section 5.6.3: Setting Groups on page 5–119 for further details). SETTING GROUP 1 BUS DIFFERENTIAL See below.MESSAGE BREAKER FAILURE See page 5-98.MESSAGE VOLTAGE ELEMENTS See page 5-106.MESSAGE CURRENT ELEMENTS See page 5-107.MESSAGE END FAULT PROTECTION See page 5-114.
