Overview; Setting Group 1; Line Differential Elements; Grouped Elements - GE L90 Instruction Manual

GROUPED ELEMENTS

5.7 Grouped elements

5.7.1 Overview

Each protection element can be assigned up to six sets of settings with 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 configuration or season of
the year). The active setting group can be preset or selected in the
later in this chapter). See also the Introduction to Elements section at the beginning of this chapter.

5.7.2 Setting group 1

SETTINGS  GROUPED ELEMENTS  SETTING GROUP 1(6)
 SETTING GROUP 1

5
Each of the six setting group menus is identical. Setting group 1 (the default active group) is active automatically when no
other group is active.
If the device incorrectly switches to group 1 after power cycling, upgrade the firmware to version 7.31 or later to correct
this issue.
5-196
 LINE DIFFERENTIAL

 ELEMENTS
 LINE PICKUP


 DISTANCE


 POWER SWING

 DETECT
 LOAD ENCROACHMENT


 PHASE CURRENT


 NEUTRAL CURRENT


 WATTMETRIC

 GROUND FAULT
 GROUND CURRENT


 NEGATIVE SEQUENCE

 CURRENT
 BREAKER FAILURE


 VOLTAGE ELEMENTS


 SUPERVISING

 ELEMENTS
 POWER


menu (see the Control Elements section
SETTING GROUPS
See below
See page 5-202
See page 5-204
See page 5-225
See page 5-234
See page 5-235
See page 5-247
See page 5-255
See page 5-259
See page 5-266
See page 5-272
See page 5-282
See page 5-294
See page 5-300
L90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS