Grouped Elements; Overview; Setting Group 1 - GE C70 Instruction Manual

GROUPED ELEMENTS

5
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

5-166
Figure 5-84: Non-volatile latch operation table (N = 1 to 16) and logic
Latch n type Latch n
set
Reset ON
Dominant
OFF
ON
OFF
Set ON
Dominant
ON
OFF
OFF
 PHASE CURRENT


 NEUTRAL CURRENT


 GROUND CURRENT


 NEGATIVE SEQUENCE

 CURRENT
C70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL
Latch n Latch n Latch n
reset on off
OFF ON OFF
OFF Previous Previous
State State
ON OFF ON
ON OFF ON
OFF ON OFF
ON ON OFF
OFF Previous Previous
State State
ON OFF ON
menu (see the Control Elements section
SETTING GROUPS
See below
See page 5-182
See page 5-194
See page 5-197
CHAPTER 5: SETTINGS