GE D30 Instruction Manual page 268

5.6 CONTROL ELEMENTS
The feature is programmed to perform fault duration calculations. Fault duration is defined as a time between operation of
the disturbance detector occurring before initiation of this feature, and reset of an internal low-set overcurrent function. Cor-
rection is implemented to account for a non-zero reset time of the overcurrent function.
Breaker arcing currents and fault duration values are available under the
NANCE BREAKER 1(2)
• BKR 1(2) ARC AMP INT-A(C): Select the same output operands that are configured to operate the output relays used
5 to trip the breaker. In three-pole tripping applications, the same operand should be configured to initiate arcing current
calculations for poles A, B and C of the breaker. In single-pole tripping applications, per-pole tripping operands should
be configured to initiate the calculations for the poles that are actually tripped.
• BKR 1(2) 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(2) 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
SETTING
BREAKER 1 ARCING
AMP BLOCK:
Off=0
AND
SETTINGS
BREAKER 1 ARCING
AMP INIT-A:
Off=0
BREAKER 1 ARCING
AMP INIT-B:
Off=0
OR
BREAKER 1 ARCING
AMP INIT-C:
Off=0
SETTING
BREAKER 1 ARCING
AMP SOURCE:
IA
IB
IC
COMMAND
CLEAR BREAKER 1
ARCING AMPS:
NO=0
YES=1
5-170
menus.
Initiate
Programmable
Start Delay
Figure 5–97: ARCING CURRENT MEASUREMENT
SETTING
BREAKER 1 ARCING
AMP DELAY: 100 ms
OR 0 0
AND RUN
Integrate
AND RUN
Integrate
AND RUN
Integrate
Figure 5–98: BREAKER ARCING CURRENT SCHEME LOGIC
D30 Line Distance Relay
ACTUAL VALUES
Breaker
Arc
Contacts
Extinguished
Part
Total Area =
Breaker
Arcing
Current
(kA·cycle)
100 ms
Start Stop
Integration Integration
Add to
Accumulator
IA -Cycle 2
IB -Cycle 2
2
IC -Cycle
ACTUAL VALUE
Set All To Zero
BKR 1 ARCING AMP A
BKR 1 ARCING AMP B
BKR 1 ARCING AMP C
BKR 1 OPERATING TIME A
BKR 1 OPERATING TIME B
BKR 1 OPERATING TIME C
BKR 1 OPERATING TIME
5 SETTINGS
RECORDS MAINTE-
SETTING
BREAKER 1 ARCING
AMP LIMIT:
FLEXLOGIC OPERANDS
Select
2
Highest KA Cycle Limit BKR1 ARC OP
*
Value
BKR1 ARC DPO
Φ
Φ
Φ
827071A3.CDR
Φ
Φ
Φ
GE Multilin