6 Maintenance
6.3
Maintenance Schedule
The maintenance schedule provides an overview of work to be done in the individual checks/inspections. A
detailed description of the work steps is given in section 6.4
Work to be Carried Out in Accordance with the
Maintenance Schedule.
In both sections, the work steps are referred to by the same numbers.
WARNING
Danger to maintenance personnel can result from
- hazardous voltage
- operating mechanisms under spring pressure
- gas pressure in the pole columns
- SF
6
-gas and its decomposition products
- falling and/or toppling parts and/or moving parts.
The Safety rules listed in section 6.2 should be followed.
Check and maintenance
service
Due to time interval
Due to wear
Remarks
Checks
After 12 years
after 3000 operating cycles
I < I
nom
Circuit-breaker must be taken
out of service and must be
isolated. Gas compartments
need not be opened.
Maintenance
After 25 years
after 6000 operating cycles
I < I
nom
Circuit-breaker must be taken
out of service and must be
isolated.
Gas compartments
are opened.
Check of contact system
Permitted conductor pull F
Circuit-breaker must be taken
out of service and must be
isolated.
Gas compartments
are opened.
Table 13 Maintenance services
88
