ABB SACE Emax E4.2-A - Page 61

ABB | SACE Emax 2
Putting into service and maintenance | 3 - Maintenance59 | © 2019 ABB | 1SDH001000R0002 - ECN000109166 - Rev. D
Continued from the previous page
circuit-breaker
UL 1066
Interrupted
rated current
Mechanical life with
regular maintenance
Electrical life
508V AC 635V AC
Frequency of
operations/
hour
Iu (40°C) [A]
No. of
operations
(x 1000)
Frequency of
operations/
hour
No. of
operations
(x 1000)
No. of
operations
(x 1000)
E2.2-A
< 1600 25 60 15 15 30
1600 25 60 12 10 30
2000 25 60 10 8 30
E4.2-A
< 2500 20 60 10 10 20
2500 20 60 8 8 20
3200 20 60 7 7 20
E6.2-A
4000 12 60 4 4 10
5000 12 60 3 2 10
6000 12 60 2 2 10
Maintenance schedule
Proper maintenance of the equipment allows good electromechanical operation to be 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
Frequency of maintenance in
standard environments
(1)
Frequency of maintenance in dusty
environments (dust level measured
> 1mg/m3)
First Level
One year or 20% of mechanical life or
20% of electrical life
6 months or 10% of mechanical life or
10% of electrical life
Second Level
Three years or 50% of mechanical life or
50% of electrical life or after a trip due to
short-circuit
18 months or 25% of mechanical life or
25% 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.