Ge 489 User Manual download pdf (Page 154)

5-22 489 Generator Management Relay GE Multilin

5.5 A4 MAINTENANCE 5 ACTUAL VALUES

5.5.2 GENERAL COUNTERS

PATH: ACTUAL VALUES ÖØ A4 MAINTENANCE ÖØ 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 digi-

tal inputs is assigned to thermal reset. This may be useful information when troubleshooting. When either of these counters

reaches 50000, that counter will reset to 0. Each counter can also be cleared using the

S1 489 SETUP ÖØ CLEAR DATA ÖØ

CLEAR BREAKER INFORMATION setpoint. The number of breaker operations will not update if a digital input programmed as

Test Input is shorted.

5.5.3 TIMERS

PATH: ACTUAL VALUES ÖØ A4 MAINTENANCE ÖØ TIMERS

The 489 accumulates the total online time for the generator. This may be useful for scheduling routine maintenance. When

this timer reaches 1000000, it resets to 0. This timer can be cleared using the S1 489 SETUP ÖØ CLEAR DATA ÖØ CLEAR

GENERATOR INFORMATION setpoint. The generator hours online will not update if a digital input programmed as Test Input is

shorted.

 GENERAL COUNTERS

 [ENTER] for more

NUMBER OF BREAKER

OPERATIONS: 0

Range: 0 to 50000

NUMBER OF THERMAL

RESETS: 0

Range: 0 to 50000. Seen only if a digital input is

assigned to Thermal Reset.

 TIMERS

 [ENTER] for more

GENERATOR HOURS

ONLINE: 0 h

Range: 1 to 1000000 hrs.

ENTER

ESCAPE

MESSAGE

ESCAPE

ENTER

ESCAPE

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Ge 489 User Manual Page 154