GE M60

CHAPTER 5: SETTINGS CONTROL ELEMENTS
M60 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL 5-303
5
Breaker arcing currents and fault duration values are available under the ACTUAL VALUES  RECORDS  MAINTENANCE 
BREAKER 1(2)
menus.
BKR 1 ARC AMP INT-A(C) — Select the same output operands that are configured to operate the output relays used to trip the
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 — 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.
BKR 1 CLR ARC AMPS — Selects a FLexLogic Operand to clear the accumulated I
2
t values (kA
2
-cycle), reset fault duration
items (breaker operating time), clear ARCING AMPS (kA
2
-cycle) and AMP MAX (kA) values of the last event.
BKR 1 INTERUPTION RATING — This setting specifies the maximum symmetrical interruption rating of the circuit breaker.
Figure 5-172: Arcing current measurement