ABB SACE Emax E2.2 Installation, Operation And Maintenance Instructions For The Installer And The User page 61

Maintenance schedule Proper maintenance of the equipment allows good electromechanical operation to be maintained over time.
59 | © 2019 ABB | 1SDH001000R0002 - ECN000109166 - Rev. D
Continued from the previous page
Interrupted
rated current
circuit-breaker
UL 1066
Iu (40°C) [A]
< 1600
E2.2-A 1600
2000
< 2500
E4.2-A 2500
3200
4000
E6.2-A 5000
6000
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 Frequency of maintenance in
maintenance standard 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
(1)
Only for 900V and 1150V circuit-breakers Operating sequences/hour = 10.
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. With Ekip Dip trip units, the information can be obtained with the
aid of Ekip T&P and a PC on which the Ekip Connect software is installed. With Ekip Touch trip units, the
information is available at any time on the appropriate display. With Ekip Dip trip units, installation of the
mechanical operation counter is recommended (supplied on request).
• During the service, visually inspect the circuit-breaker from the outside to check for the presence of dust,
dirt or damage.
Mechanical life with
regular maintenance
No. of Frequency of
operations operations/
(x 1000) hour
25 60
25 60
25 60
20 60
20 60
20 60
12 60
12 60
12 60
Frequency of maintenance in dusty
environments (dust level measured
(1)
> 1mg/m3)
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
ABB | SACE Emax 2
Electrical life
508V AC 635V AC
Frequency of
No. of No. of
operations/
operations operations
hour
(x 1000) (x 1000)
15 15 30
12 10 30
10 8 30
10 10 20
8 8 20
7 7 20
4 4 10
3 2 10
2 2 10