GE Digital Energy L30, Инструкция по эксплуатации, Страница: 264 / 644

5-138 L30 Line Current Differential System GE Multilin
5.6 GROUPED ELEMENTS 5 SETTINGS
5
5.6GROUPED ELEMENTS 5.6.1 OVERVIEW
Each 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 the
user 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 the
Control elements section later in this chapter). See also the Introduction to elements section at the beginning of this chap-
ter.
5.6.2 SETTING GROUP
PATH: 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 if
no other group is active (see the
Control elements section for additional details).
5.6.3 LINE DIFFERENTIAL ELEMENTS
a) MAIN MENU
PATH: SETTINGS

GROUPED ELEMENTS

SETTING GROUP 1(6)

LINE DIFFERENTIAL ELEMENTS

SETTING GROUP 1


LINE DIFFERENTIAL

ELEMENTS
See page 5-138.
MESSAGE

PHASE CURRENT

See page 5-144.
MESSAGE

NEUTRAL CURRENT

See page 5-155.
MESSAGE

GROUND CURRENT

See page 5-162.
MESSAGE
 NEGATIVE SEQUENCE

CURRENT
See page 5-165.
MESSAGE

BREAKER FAILURE

See page 5-167.
MESSAGE
 VOLTAGE ELEMENTS

See page 5-175.
MESSAGE

SUPERVISING

ELEMENTS
See page 5-182.

LINE DIFFERENTIAL

ELEMENTS

CURRENT

DIFFERENTIAL
See page 5-139.
MESSAGE

STUB BUS

See page 5-143.