Alstom FKG1X - Page 54

Description and operation
Description of circuit breaker pole
G12
-
-1
09EN03
3/4
02--2011
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ion contained in
this document is indicative only. No
representati
on or
warrant
y is
given or should
be
relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is
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 GRID
Interrupting chamber
Extinguishing
Environment
The arc extinguishing environment is low--pressure SF
6
gas.
Interrupting principle
 Install
ed
hor
izo
ntal
ly
,
the
asse
mbly
is
of
a
ther
mal,
auto-
-char
gin
g
pne
umati
c,
double arc--blowing design
Diagram
A
 1
0
1
1
12
1
4
2
0
23
24
B
21
22
15
16
17
13
18
Table of
the
compone
nts
The following table lists the components both within and around the inter-
rupter
chambe
r:
M
a
r
k
C
o
m
p
o
n
e
n
t
I
n
f
o
r
m
a
t
i
o
n
10
Mo
vi
ng
co
nt
ac
t
mounting
supported by the mechanism casing (
A
).
1
1
Mo
vi
ng
co
nt
ac
t
fi
tt
ed
wi
th
a
co
nt
ac
t
tu
be
(1
2)
.
13
Bl
ow
in
g
de
vi
ce
fi
tte
d
wi
th
a
no
zz
le
(1
4)
,
arc contacts (17),
a front arc valve guide (15),
a rear arc guide (16),
a piston (18).
20
Fi
xe
d
co
nt
ac
t
mounting
supported by the casing (
B
).
21
Per
man
en
t
co
nta
ct
fitt
ed
wi
th
a
co
nta
ct
tul
ip
(22
).
2
3
F
i
x
e
d
c
o
n
ta
c
t
a
n
d
i
ts
c
o
n
ta
c
t
s
h
a
ft
(
2
4
)
.