Alstom FKG1X - Page 69

Function description
FK 3-12 spring operating mechanisms
For circuit
brea
kers
06.04.2011
48-020-212EN02
10/15
Closing operation
7
0
.
2
5
7
0
.
2
2
7
0
.
2
1
7
0
.
2
0
7
9
.
0
4
7
1
.
3
2
7
0
.
0
5
7
0
.
0
7
7
0
.
0
6
70.10 70.11
70.05
Closing
latch
70.21
Auxiliary
switch
70.06 Closing
magnet
70.22
Motor
limit
switch
actuating
cam
70.07
Manual
CLOSE
release
70.24
Motor
limit
switch
70.09
Closing
shaft
70.25
Closing
spring
70.10
Cam
disc
70.26
Closing
chain
70.11
Roller
lever
70.29
Crank
journal
70.12
Main
shaft
70.31
Spring
position
indicator
70.16
Trip
latch
70.52
Cicuit
breaker
position
indicator
70.18 Operating
lever
71.32 Pair
of
winding
lever
with
return-stop
70.19
Trip
chain
71.43
Crank
lever
70.20
Trip
spring
79.04
Gearing
•
Circuit breaker
and operating
mechanism
are in
operating state
2.
Operating state
2: steady
Motor Closing
Opening
•
Closing latch
70.05 is released
by the electrical
command to
closing
magnet 70.06 or by actuation of mechanical manual release 70.07.
•
Closing shaft
70.09 is
accelerated by
the effect
of closing
spring 70.25,
which is attached to crank lever 71.43.
70.19
70.52
70.18
70.12
70.16
70.26
70.24
70.31
70.09
71.43
70.29
B