GE UR Series Instruction Manual page 227

5 SETTINGS
BKR 1 ARC AMP DELAY:
This setting is used to program the delay interval between the time the tripping sequence is initiated and the time the
breaker contacts are expected to part, starting the integration of the measured current.
BKR 1 ARC AMP LIMIT:
Selects the threshold value above which the output operand is set.
SETTING
BREAKER 1 ARCING
AND
AMP FUNCTION:
Disabled=0
Enabled=1
OR
SETTING
BREAKER 1 ARCING
AMP INIT:
Off=0
AND
SETTING
BREAKER 1 ARCING
AMP BLOCK:
Off=0
SETTING
BREAKER 1 ARCING
AMP SOURCE:
A
B
C
COMMAND
CLEAR BREAKER 1
ARCING AMPS:
NO=0
YES=1
Figure 5–74: BREAKER ARCING CURRENT SCHEME LOGIC
GE Power Management
Breaker
Contacts
Initiate
Part
Programmable
Start Delay
Start
Integration
Figure 5–73: ARCING CURRENT MEASUREMENT
SETTING
BREAKER 1 ARCING
AMP DELAY: 100 ms
0 0
RUN
Add to
Accumulator
Integrate A -Cycle
Integrate B -Cycle
Integrate
C -Cycle
Set All To Zero
L90 Line Differential Relay
Arc
Extinguished
Total Area =
Breaker
Arcing
Current
(kA·cycle)
100 ms
Stop
Integration
2
Select
2
Highest
Value
2
ACTUAL VALUE
BKR 1 ARCING AMP A
BKR 1 ARCING AMP B
BKR 1 ARCING AMP C
5.6 CONTROL ELEMENTS
SETTING
BREAKER 1 ARCING
AMP LIMIT: FLEXLOGIC OPERAND
2
KA Cycle Limit BKR1 ARC OP
*
827071A2.CDR
5-143
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