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L6555
Emax
19/74
Doc. No
Model
Apparatus
Scale
Page No
1SDH000460R0002
8. Maintenance
8.1. Warning
WARNING: Before carrying out any maintenance task, you must:
-
Open the circuit-breaker and check that the operating mechanism springs are unloaded;
-
In the case of withdrawable circuit-breakers, work with the circuit-breaker racked-out (DISCONNECTED) of
the fi xed part;
-
For action on fi xed version circuit-breakers or on fi xed parts disconnect the power circuit and the auxiliary
circuits and visibly earth the terminals both on the power supply side and on the load side;
-
Make safe in compliance with current laws.
WARNING ELECTRICAL SHOCK HAZARD: Shock Hazard or Injury.
ABB declines all responsibility for damage to things and injury to people due to failure to comply with the instructions contained
in this document. Maintenance tasks must be performed by qualifi ed staff who are thoroughly familiar with the equipment.
8.2. Maintenance
programme
8.2.1. Switch
life
With regular maintenance, SACE Emax circuit-breakers, either with or without opening or closing releases, can withstand the
following operation without replacement of parts.
(1)
Rated uninterrupted
current
Mechanical life
(2)
Electrical life
(2)
Iu (40 °C)
[A]
No. of
operations
x 1000
Frequency
operations/hour
440 V ~
No. of operations
x 1000
690 V ~
No. of operations
x 1000
Free
operations/hour
E1 B-N
800
25
60
10
10
30
1000-1250
25
60
10
8
30
1600
25
60
10
8
30
E2 B-N-S
800
25
60
15
15
30
1000-1250
25
60
15
15
30
1600
25
60
12
10
30
2000
25
60
10
8
30
E2 L
1250
20
60
4
3
20
1600
20
60
3
2
20
E3 N-S-H-V
800
20
60
12
12
20
1000-1250
20
60
12
12
20
1600
20
60
10
10
20
2000
20
60
9
9
20
2500
20
60
8
7
20
3200
20
60
6
5
20
E3 L
2000
15
60
2
1,5
20
2500
15
60
1,8
1,3
20
E4 S-H-V
3200
15
60
7
7
10
4000
15
60
5
4
10
E6 H-V
3200
12
60
5
5
10
4000
12
60
4
4
10
5000
12
60
3
2
10
6300
12
60
2
1,5
10
Emax LTT - Low temperature version
E1 B-N
800-1600
8
60
8
8
30
E2 B-N-S
800-1600
8
60
8
8
30
E2 L
1250-1600
8
60
3
2
20
E3 N-S-H-V
800-2000
8
60
8
8
20
E3 N-S-H-V
2500
8
60
8
7
20
E3 N-S-H-V
3200
8
60
6
5
20
E3 L
2000-2500
8
60
1,6
1,3
20
(1) Data referring to standard installation conforming to product standards. For other applications, consult ABB Sace.
(2) Extreme atmospheric conditions, polluted atmosphere or vibrations may shorten the application’s life. Consult ABB Sace.