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8. KEYBOARD AND DISPLAY
GEK-106168E DBF Breaker Failure Protection 43
8.2. SETTINGS GROUP (SET KEY)
This group allows to see and modify the DBF settings. It is accessed by pressing the SET key when the DBF is in
steady state. When the SET key is pressed the following message appears on the screen:
VIEW SETTINGS
PROTECTION
When the UP/DOWN arrows are pressed the message changes to:
MODIFY SETTINGS
PROTECTION
And the last UP/DOWN action gives:
MODIFY COUNTERS
PROTECTION
For the above windows, the menu tree is shown in the following tables. Note that to go down a level in the tree the
ENT key must be pressed, and the CLR keytogoup
Level 1 Level 2 Level 3 Level 4
RELAY STATUS In/Out of service
IDENTIFICAT 20 characters
FREQUENCY 50 – 60 Hz
PHASE CT RATIO 1-4000
GENERAL SETTINGS
GROUND CT RATIO 1-4000
BREAKER NUMBER 4 digits
KI2t OP. MODE Fixed / Measuring
KI2t INT TIME 0.03 - 0.25 s
BREAKER SETTINGS
KI2t LIMIT 1 – 999999 kA2s
ACTIVE
TABLE SET
ACTIVE TABLE 1 –3
PREFAULT CYCLES 0-4
PICKUP ENABLE/DISABLE
1
st
STAGE TRIP ENABLE/DISABLE
2
nd
STAGE TRIP ENABLE/DISABLE
INTERNAL ARC ENABLE/DISABLE
50BF A TRIP ENABLE/DISABLE
50BF B TRIP ENABLE/DISABLE
50BF C TRIP ENABLE/DISABLE
50BF 3P TRIP ENABLE/DISABLE
EXTERNAL TRIGGER ENABLE/DISABLE
COMM. TRIGGER ENABLE/DISABLE
HI-SET A PICKUP ENABLE/DISABLE
HI-SET B PICKUP ENABLE/DISABLE
HI-SET C PICKUP ENABLE/DISABLE
50BF A INIT ENABLE/DISABLE
50BF B INIT ENABLE/DISABLE
50BF C INIT ENABLE/DISABLE
LO-SET A PICKUP ENABLE/DISABLE
LO-SET B PICKUP ENABLE/DISABLE
LO-SET C PICKUP ENABLE/DISABLE
3 POLE 50BF INIT ENABLE/DISABLE
NEUTRAL PICKUP ENABLE/DISABLE
ARC A PICKUP ENABLE/DISABLE
VIEW PROTECTION SETTINGS
OSCILLOS MASK
ARC B PICKUP ENABLE/DISABLE
ARC C PICKUP ENABLE/DISABLE