GE Multilin 489 User Manual

CHAPTER 6: ACTUAL VALUES
489 GENERATOR MANAGEMENT RELAY – INSTRUCTION MANUAL 6–27
The number of trips by type is displayed here. When the total reaches 50000, all counters
reset. This information can be cleared with the
S1 489 SETUP ZV CLEAR DATA ZV
CLEAR TRIP COUNTERS
setpoint. Trip counters will not update if a digital input programmed
as Test Input is shorted. In the event of multiple trips, the only the first trip will increment
the trip counters.
6.5.2 General Counters
PATH: ACTUAL VALUES ZV A4 MAINTENANCE ZV GENERAL COUNTERS
One of the 489 general counters will count the number of breaker operations over time.
This may be useful information for breaker maintenance. The number of breaker
operations is incremented whenever the breaker status changes from closed to open and
all phase currents are zero. Another counter counts the number of thermal resets if one of
the assignable digital inputs is assigned to thermal reset. This may be useful information
when troubleshooting. When either of these counters exceeds 50000, that counter will
reset to 0.
The
NUMBER OF BREAKER OPERATIONS counter can also be cleared using the S1 489 SETUP
ZV CLEAR DATA ZV CLEAR BREAKER INFORMATION setpoint. The NUMBER OF THERMAL
RESETS counter can be cleared using the S1 489 SETUP ZV CLEAR DATA ZV CLEAR
GENERATOR INFORMATION setpoint.
The number of breaker operations will not update if a digital input programmed as Test
Input is shorted.
6.5.3 Timers
PATH: ACTUAL VALUES ZV A4 MAINTENANCE ZV TIMERS
The 489 accumulates the total online time for the generator. This may be useful for
scheduling routine maintenance. When this timer exceeds 1000000, it resets to 0. This
timer can be cleared using the
S1 489 SETUP ZV CLEAR DATA ZV CLEAR GENERATOR
INFORMATION
setpoint. The generator hours online will not update if a digital input
programmed as Test Input is shorted.
 GENERAL [Z]
COUNTERS
NUMBER OF BREAKER
OPERATIONS: 0
Range: 0 to 50000
MESSAGE
NUMBER OF THERMAL
RESETS: 0
Range: 0 to 50000. Seen only if a
Digital Input is assigned to
Thermal Reset.
 TIMERS [Z] GENERATOR HOURS
ONLINE: 0 h
Range: 1 to 1000000 hrs.
Courtesy of NationalSwitchgear.com

GE Multilin 489 Specifications

General

Brand	GE
Model	Multilin 489
Category	Relays
Language	English