Circuit-Breaker Life; Maintenance Schedule - ABB SACE Emax 2 Series Installation, Operation And Maintenance Instructions

Circuit-breaker life Emax 2 circuit-breakers, with or without opening or closing releases, can withstand the
Maintenance schedule Proper maintenance of the equipment allows good electromechanical operation to be
252 | © 2013 ABB | 1SDH001000R0002 - L7804
following operating cycles if regularly serviced
Interrupted
rated
current
Circuit-
breaker
Iu (40°C)
[A]
< 1600
1600
E2.2
2000
2500
< 2500
2500
E4.2 3200
4000
3200
4000
E6.2 5000
6300
(1)
See chapter 5 - Environmental conditions on page 22 .
maintained over time.
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 maintenance
First Level
Second Level
(1)
See chapter 5 - Environmental conditions on page 22 .
Compliance with the following rules is also recommended:
• Even circuit-breakers that are operated 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 carried out. With
Ekip Dip releases, 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 releases, the information is
available at any time on the appropriate display. With Ekip Dip releases, 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.
.
(1)
Electrical life
Mechanical life with
regular maintenance
440V AC
Frequency
No. No.
of
operations operations
Operations/
(x 1000) (x 1000)
hour
25 60 15
25 60 12
25 60 10
20 60 8
20 60 10
20 60 8
20 60 7
15 60 5
15 60 2
12 60 4
12 60 3
12 60 2
Frequency of maintenance
in standard environments
(1)
One year or 20% of
mechanical life or 20% of
electrical life
Three years or 50% of
mechanical life or 50% of
electrical life or after a trip
under short-circuit
Putting into service and maintenance | 3 - Maintenance
ABB | SACE Emax 2
690V AC
Frequency
of
No.
Operations/
operations
hour
(x 1000)
15 30
10 30
8 30
7 30
10 20
8 20
7 20
4 20
2 20
4 10
2 10
2 10
Frequency of maintenance
in dusty environments
(dust level measured >
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
under short-circuit