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L2234
L2778
Emax
20/158
Doc. No.
Model
Apparatus
Scale
Page No.
1SDH000460R0002
7
5
6
2
1
4
3
5
7
9
8
E1-E3
E4-E6
6
9
8
2
1
3
4
8.2 Maintenance program
Fig. 32
8.3 Maintenance operations
8.3.1
Preliminary operations
– Remove the flange (1) of the release, turning the screws (2) as shown in the figures
– Remove the front escutcheon plate (3) by removing the four screws (4)
– Remove, if present, one or both side guards (5) by removing the front (6) and lateral (7) screws
– Remove the arcing chambers (8) by removing the screws (9).
Maintenance operations
Interval
Installation in normal rooms
Installations in dusty or polluted rooms
General inspection (see par. 8.3.2)
One year or after a short-circuit trip
Six months or after a short-circuit trip
External visual check and inspection
One year
Six months
of the power section
Operating mechanism maintenance (par. 8.3.4)
One year or 10000 operations
Six months or 10000 operations
Checking trip of the release
One year
Six months
(*) With regular ordinary maintenance
With regular maintenance, SACE Emax circuit-breakers, either with or without a geared motor, can withstand the following operation without
replacement of parts.
Rated uninterrupted current
Mechanical life (*)
Electrical life
Iu (40 °C)
No. of operations Frequency
440 V ~
690 V ~
Frequency
[A]
x 1000
operations/hour No. of operations x 1000 No. of operations x 1000 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