Alstom FKG1X - Page 199

Maintenance
Maintena
nce
plan
G51
-
-0
01EN07
2/18
02--2011
© ALSTOM 2010. All rights reserved. Informat
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
provided without liabili
ty and
is subject to
change without notice. Reproduction, use or disclosure to
third parties, without express writt
en authority, is
strictly prohibited.
 GRID
Maintenance plan
of circuit
-
-
breaker
(20000 guaranteed mechanical cycles)
Maintenance
frequency
Under normal operating conditions, the maintenance plan of circuit--breaker
may be defin
ed as follo
ws
:
Type of
examination
F
r
e
q
u
e
n
c
y
C
o
m
m
e
n
t
Maintenance
visits
Once
or
twice
a
year
It
is
ad
vi
sa
bl
e
to
pe
rf
or
m
at
lea
st 2
CO duty
cyc
les per
yea
r
,
when
app
ara
tus
are
scarcely used, in order to
ch
ec
k
th
at
the
cir
cu
it-
--
br
ea
ke
r
an
d
as
so
ci
at
ed
con
tro
l
cir
cuit
s
are
work
-
ing properly.
In
s
p
e
c
ti
o
n
s
E
v
e
r
y
fi
v
e
y
e
a
r
s
This
nec
essi
tates
circ
uit-
--
br
ea
ke
r
sh
utd
ow
n.
It
is
no
t
necess
ary
,
howev
er
to
dis-
mantle
interrup
ting
chambe
rs
and other sub--assemblies.
Overhaul
Perform when one of the fol-
lowin
g criteria is reach
ed
:
D
operating time
≥
20 years
D
electric wear
D
Service life for the motor---
driven fans (if applicable)
≥
25,000 hours/fan
However, it is recommended
to proceed with inspection of
the
pol
e
or
circ
uit-
-brea
ker
used the most, then to adapt
the
maintena
nce programme
f
o
r
t
h
e
o
t
h
e
r
b
r
e
a
k
e
r
s
de
pe
nd
in
g
on
th
e
re
su
lt
s
observed.