LEGRAND DMX3 Maintenance Guide

45
DMX
3
- Maintenance guide
Check the general condition of breaker, if there
are broken parts, ageing or damaged parts
- front covers and IP protection
- identification labels
- Protection Unit display and enclosure
- Connections
- Chassis
- Structure of breaker
Check the compatibility between electrical acces-
sories and the voltage used
Disconnect the breaker from the supply, both the
power and auxiliary circuit
Perform a close/open cycle
Open the breaker and discharge the springs
(OFF-DISCHARGED)
In case of draw-out breaker, remove the breaker from chassis
Remove the front cover
3. Preparatory work
Unless otherwise
specified in the
maintenance
procedures, all
operations must
be carried out
without supply
(power and
aux circuit) and
with breaker in
position OFF-
DISCHARGED.
If in procedure
there are different
indications, at the
end of procedure
the breaker must
anyway be in
the safe condi-
tion: no supply in
power and aux
circuit and OFF-
DISCHARGED
discharged
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
Im
6
4
5
s
xIn
0.1
0.0
0.01
20
5
10
@6Ir
30
tr
30
20
0.3
tm
0.2
0.3
0.2
0.1
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
I
2
t=k@12Ir
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
discharged
discharged
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
Im
6
4
5
s
xIn
0.1
0.0
0.01
20
5
10
@6Ir
30
tr
30
20
0.3
tm
0.2
0.3
0.2
0.1
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
I
2
t=k@12Ir
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
discharged
discharged
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
Im
6
4
5
s
xIn
0.1
0.0
0.01
20
5
10
@6Ir
30
tr
30
20
0.3
tm
0.2
0.3
0.2
0.1
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
I
2
t=k@12Ir
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
I
xIn
0.
20
5
10
@6Ir
30
tr
30
20
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
Im
6
4
5
s
xIn
0.1
0.0
0.01
20
5
10
@6Ir
30
tr
30
20
0.3
tm
0.2
0.3 0.2
0.1
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
I
2
t=k@12Ir
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
discharged
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
Im
6
4
5
s
xIn
0.1
0.0
0.01
20
5
10
@6Ir
30
tr
30
20
0.3
tm
0.2
0.3
0.2
0.1
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
I
2
t=k@12Ir
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
discharged
discharged
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
Im
6
4
5
s
xIn
0.1
0.0
0.01
20
5
10
@6Ir
30
tr
30
20
0.3
tm
0.2
0.3
0.2
0.1
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
I
2
t=k@12Ir
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
discharged
discharged
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
Im
6
4
5
s
xIn
0.1
0.0
0.01
20
5
10
@6Ir
30
tr
30
20
0.3
tm
0.2
0.3
0.2
0.1
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
I
2
t=k@12Ir
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
I
xIn
0.
20
5
10
@6Ir
30
tr
30
20
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
Im
6
4
5
s
xIn
0.1
0.0
0.01
20
5
10
@6Ir
30
tr
30
20
0.3
tm
0.2
0.3 0.2
0.1
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
I
2
t=k@12Ir
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
discharged
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
Im
6
4
5
s
xIn
0.1
0.0
0.01
20
5
10
@6Ir
30
tr
30
20
0.3
tm
0.2
0.3
0.2
0.1
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
I
2
t=k@12Ir
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
discharged
discharged
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
Im
6
4
5
s
xIn
0.1
0.0
0.01
20
5
10
@6Ir
30
tr
30
20
0.3
tm
0.2
0.3
0.2
0.1
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
I
2
t=k@12Ir
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
discharged
discharged
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
Im
6
4
5
s
xIn
0.1
0.0
0.01
20
5
10
@6Ir
30
tr
30
20
0.3
tm
0.2
0.3
0.2
0.1
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
I
2
t=k@12Ir
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
I
xIn
0.
20
5
10
@6Ir
30
tr
30
20
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
10
5
2
0.7
0.4
5
0.6
0.5
Ir
2
0.9
8
0.8
10
xIr
3
Im
6
4
5
s
xIn
0.1
0.0
0.01
20
5
10
@6Ir
30
tr
30
20
0.3
tm
0.2
0.3 0.2
0.1
I>1.05
I>.90
xIr
ON
N
0.00
0.02
0.04
0.06
0.08
0.1
I
2
t=k@12Ir
MEM=OFF
s
1
.
.
5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
Draw-out
version
Fixed version

LEGRAND DMX3 Specifications

General

Brand	LEGRAND
Model	DMX3
Category	Industrial Equipment
Language	English