Maintenance Schedule - ABB SACE Emax 2 Installation, Operation And Maintenance Instructions

Maintenance schedule Proper maintenance of the equipment allows good electromechanical operation to be maintained over time.
45 | © 2021 ABB | 1SDH002083A1002 - ECN000119014 - Rev. A
The maintenance plan for SACE Emax 2 circuit-breakers specifies two periodic levels of maintenance for the
different types of site conditions.
The following is a table of maintenance frequency with the periodic intervals and the routine maintenance
operations.
Type of mainte- Frequency of maintenance in stan-
nance dard environments
One year or 20% of mechanical life or
First Level
20% of electrical life
Three years or 50% of mechanical life or
Second Level 50% of electrical life or after a trip due to
short-circuit
Compliance with the following rules is also recommended:
• Even circuit-breakers that operate infrequently or that remain closed or open for long periods of time must
be subjected to programmed maintenance.
• All the circuit-breakers provide information on the number of operations performed in the presence of
auxiliary power supply of the Trip Unit.
• During the service, visually inspect the circuit-breaker from the outside to check for the presence of dust,
dirt or damage.
ABB | SACE Emax 2
Frequency of maintenance in dusty
environments (dust level measured
> 1mg/m 3 )
6 months or 10% of mechanical life or
10% of electrical life
18 months or 25% of mechanical life or
25% of electrical life or after a trip due to
short-circuit
Putting into service and maintenance | 3 - Maintenance