Maintenance
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2013-08-28
Maintenance plan
continued on next page
No. Work to be done Operating and auxil-
iary materials
Frequency Remarks
annually
every 10,000*
)
every 30,000*
)
after 60,000*
)
*
)
mechanical operating
cycles
1. Vacuum circuit-breaker
1.1 Clean insulating parts and outer
parts
Warm water, house-
hold cleaners
x Note 1)
1.2 Grease all bearing points and sliding
surfaces as per Fig. 70 and Fig. 69.
Perform 3 to 5 mechanical test
switching operations after greasing
Isoflex Topas L32
Shell Tellus Oil 32
x See Fig. 70 and Fig. 69
Note 2), 3), 6)
1.3 Check all electrical operating materi-
als in the drive for correct functioning
x
1.4 Check line connections for tight seat x
1.5 Check all screw connections and
locking elements for tight fit and
check for completeness
x
2. Pole assembly
2.1 Exchange vacuum interrupters x Possibly depending on the
electrical operating cycle
number as per “Interrupter
service life”,
Note 4)
x Only for 3AH4305-7,
3AH4305-8, 3AH4306-7,
3AH4306-8 maintenance at
the Siemens plant
2.2 Exchange spring guide and insulat-
ing operating rod
x Note 4)
2.3 Angle lever x Only for 3AH4305-7,
3AH4305-8, 3AH4306-7,
3AH4306-8,
Note 4)
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