L3447
Emax DC
19/108
Doc. No.
Model
Apparatus
Scale
Page No.
1SDH000635R0002
L3728
7
5
6
2
1
4
3
5
7
9
8
E2-E3
E4-E6
6
9
8
2
1
3
4
Rated uninterrupted Mechanical life (*) Electrical life
current
Iu (40 °C)
No. of operations
Frequency
500 V
750 V
1000 V
Frequency
[A]
x 1000
operations/hour No. of operations No. of operations No. of operations
operations/hour
x 1000
x 1000
x 1000
E2B
800
25
60
15
15
15
30
E2B 1000-1250
25
60
15
15
15
30
E2B/N
1600
25
60
10
10
10
30
E3N
800
20
60
12
12
12
20
E3N 1000-1250
20
60
12
12
12
20
E3N/H 1600
20
60
10
10
10
20
E3N/H 2000
20
60
9
9
9
20
E3N/H 2500
20
60
7
7
7
20
E4S
1600
15
60
7
7
7
20
E4S
2000
15
60
7
7
7
20
E4S
2500
15
60
7
7
7
20
E4S/H
3200
15
60
4
4
4
20
E6H
3200
12
60
5
5
5
10
E6H
4000
12
60
4
4
4
10
E6H
5000
12
60
2
2
2
10
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.
