GE F35 Instruction Manual page 330

CONTROL ELEMENTS
breaker before the contacts have parted. This interval includes the operating time of the output relay, any other auxiliary
relays, and the breaker mechanism. For maximum measurement accuracy, measure the interval between change-of-state
of the operand (from 0 to 1) and contact separation for the specific installation. Integration of the measured current
continues for 100 ms, which is expected to include the total arcing period.
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.
Correction 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
menus.
BREAKER 1(6)
BKR 1 ARC AMP INT-A(C)
breaker. In three-pole tripping applications, configure the same operand to initiate arcing current calculations for poles A,
B, and C of the breaker. In single-pole tripping applications, configure per-pole tripping operands to initiate the calculations
for the poles that are actually tripped.
BKR 1 ARC AMP DELAY
initiated and the time the breaker contacts are expected to part, starting the integration of the measured current.
BKR 1 ARC AMP LIMIT
5
5-204
— Select the same output operands that are configured to operate the output relays used to trip the
— This setting is used to program the delay interval between the time the tripping sequence is
— Selects the threshold value above which the output operand is set.
Figure 5-106: Arcing current measurement
Initiate
Programmable
ACTUAL VALUES  RECORDS  MAINTENANCE 
Breaker
Arc
Contacts
Extinguished
Part
Total Area =
Breaker
Arcing
Current
(kA·cycle)
100 ms
Start Delay
Start Stop
Integration Integration
F35 MULTIPLE FEEDER PROTECTION SYSTEM – INSTRUCTION MANUAL
CHAPTER 5: SETTINGS