GE Multilin G650 Manual page 167

5.3 SYSTEM SETUP
5.3.3.2 BREAKER MAINTENANCE
To consider used breakers, the relay allows to set initial I
into account previous breaker operations, as well as operations produced during testing. Breaker maintenance parameters
can be set in the breaker maintenance menu.
BREAKER MAINTENANCE (Setpoint > System Setup > Breaker > Breaker Maintenance)
Table 5–23: BREAKER MAINTENANCE SETTINGS
SETPOINT > SYSTEM SETUP > BREAKER > BREAKER MAINTENANCE
setting Description
(KI)
(KI)
(KI)
Openings counter
Closings counter
In this group of settings, the start values of the breaker Counters can be set.
These Counters allow the breaker Maintenance. They are used to accumulate the breaker aging produced by a trip or a
breaker opening. In order to incorporate the breaker's history, in case of used breakers, the system allows assigning an
initial value to accumulated amperes, and to the number of opening and closing operations.
To supervise breaker aging, Σ(KI)
rated current is not exceeded, as in the case of a manual opening command, without fault current, the relay uses the rated
current instead of the measured value.
5
2
(KI) t value is accumulated and maintained in independent Counters for each phase. Counters can be accessed through
the local HMI as well as through the EnerVista 650 Setup software. The element incorporates a setting to select the
integration time ((KI)
The signals associated to the opened or closed status of the breaker can be monitored at "Actual > Status > Breaker"
Table 5–24: BREAKER STATUS
BREAKER STATUS
BREAKER OPEN
BREAKER CLOSED
BREAKER UNDEFINED
The signals associated to breaker maintenance can be monitored at "Actual > Status > Records Status > Breaker
Maintenance", and they are as follows:
Table 5–25: BREAKER MAINTENANCE STATUS
BREAKER MAINTENANCE
2
(KI) t PHASE A ALARM
2
(KI) t PHASE B ALARM
2
(KI) t PHASE C ALARM
BKR OPENINGS ALARM
BKR OPEN 1 HOUR ALRM
2
RESET (KI) t COUNTERS
RESET BKR COUNTERS
BREAKER OPENINGS
BREAKER CLOSINGS
5-24
Name
2 2
t Counter Phase A (KI) t BKR Ph A Cnt
2 2
t Counter Phase B (KI) t BKR Ph B Cnt
2 2
t Counter Phase C (KI) t BKR Ph C Cnt
BKR Openings Cnt
BKR Closings Cnt
2
t accumulated values are calculated and stored for each phase in each opening. If the
2
t Integ. Time).
DESCRIPTION
Breaker in open position.
Breaker in close position
Breaker undefined
DESCRIPTION
This signal activates when the set value for phase A is exceeded.
This signal activates when the set value for phase B is exceeded.
This signal activates when the set value for phase C is exceeded.
Relay total Number of Openings alarm
Relay total Number of Openings in one hour alarm
2
(KI) t Counters reset signal. This signal is configured at Setpoint > Relay Configuration > Protection
Elements, and it is used for resetting the (KI)
digital input, etc.
Reset signal for the Opening and Closing Counters. This signal is configured at Setpoint > Relay
Configuration > Protection Elements, and it is used for resetting the breaker Opening and closing
counters.
Number of Breaker openings
Number of Breaker closings
G650 Generator Protection & Control System
2
t values as well as an initial number of operations, in order to take
Default Value Step
0.00
0.01 (KA)
0.00
0.01 (KA)
0.00
0.01 (KA)
0 1
0 1
2
t counter through the corresponding signal, command,
5 SETTINGS
Range
[0.00 : 9999.99]
2
s
2 [0.00 : 9999.99]
s
[0.00 : 9999.99]
2
s
[0 : 9999]
[0 : 9999]
GEK-113285A