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Megabreak® - Maintenance guide
M
ain
tenanc
e guide
63
4.9
MCSR - Mechanical accessories
Tools necessary:
none
4.9.1 - MCSR-I - Open position lock
• Functional
- Open the breaker
- Push the open push button and activate the “open position lock”
- Verify it is not possible activate “open position lock” without open the breaker and keeping pushed
the open pushbutton
4.9.2 - MCSR-II - Draw-out shutter key lock
• Functional
- Get the breaker in inserted position – test position – drawout position
Type A
Verify that in all position it is possible to lock the shutter and extract the key
Type B
Verify that only in TEST and Draw out position it is possible to lock the shutter and extract the key
discharged
10
5
2
5
2
8
10
xIr
3
Im
6
4 5
s
0.1
0.0
0.0
1
20
5
10
@6Ir
30
tr
30
20
0.3
tm
0.2
0.3
0.2
0.1
0.08
0.1
I
2
t=k@12
Ir
MEM=OFF
s
1
.
.
5
Icw
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
0.0
1
20
5
10
@6I
r
30
tr
30
20
0.3
tm
0.2
0.3
0.2
0.1
I>1.05
I>.90
xIr
ON
N
0.0
0
0.0
2
0.04
0.0
6
0.0
8 0.1
I
2
t=k@12I
r
MEM=OFF
s
1.
.5
Ii
Icw
4
3
2
8
6
10
12
15
xIn
Padlock
Key lock
TEST
Inserted
TEST
Test
TEST
Draw-out
TEST
Inserted
TEST
Test
TEST
Draw-out
TEST
Inserted
TEST
Test
TEST
Draw-out
TEST
Inserted
TEST
Test
TEST
Draw-out