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Line differential relay
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4.2 FACEPLATE INTERFACE
d) CONTROL OF ONE BREAKER
For this application the relay is connected and programmed for breaker No. 1 only. Operation for this application is identical
to that described for two breakers.
a) NAVIGATION
Press the
key to select the desired header display page (top-level menu). The header title appears momentarily fol-
lowed by a header display page menu item. Each press of the
illustrated below.
ACTUAL VALUES
Ø
TT TT
ACTUAL VALUES
TT TT
4
STATUS
Ö Ö
USER DISPLAYS
( when in use )
Ø
User Display 1
b) HIERARCHY
The setting and actual value messages are arranged hierarchically. The header display pages are indicated by double
scroll bar characters (
pages represent the highest level of the hierarchy and the sub-header display pages fall below this level. The MESSAGE
and
keys move within a group of headers, sub-headers, setting values, or actual values. Continually pressing the
MESSAGE
key from a header display displays specific information for the header category. Conversely, continually
pressing the
MESSAGE key from a setting value or actual value display returns to the header display.
HIGHEST LEVEL
TT TT
SETTINGS
TT TT
PRODUCT SETUP
TT TT
SETTINGS
TT TT
SYSTEM SETUP
4-10
Ö Ö
SETTINGS
Ø
TT TT
SETTINGS
„„ „„
PRODUCT SETUP
TT TT
), while sub-header pages are indicated by single scroll bar characters (
LOWEST LEVEL (SETTING VALUE)
T T
PASSWORD
T T
SECURITY
L90 Line Differential Relay
key advances through the main heading pages as
Ö Ö
COMMANDS
Ø
TT TT
COMMANDS
TT TT
VIRTUAL INPUTS
ACCESS LEVEL:
Restricted
4 HUMAN INTERFACES

4.2.8 MENUS

Ö Ö
TARGETS
Ø
No Active
Targets
T T
). The header display
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