Alstom FKG1X - Page 201

Maintenance
Maintena
nce
plan
G51
-
-0
01EN07
4/18
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 earthing switch
(if applicable)
(10000 guaranteed mechanical cycles)
Maintenance
frequency
Under normal operating conditio
ns, t
he maintenance plan of
earthing switch
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
th
e
ea
rt
hi
ng
switch and associated con-
tr
ol
cir
cu
its
ar
e
wor
kin
g
properly.
In
s
p
e
c
ti
o
n
s
E
v
e
r
y
fi
v
e
y
e
a
r
s
This
necess
itates
appara
tus
shutdown.
Overhaul
Perform when one of the fol-
lowin
g criteria is reach
ed
:
D
operating time
≥
20 years
However, it is recommended
to proceed with inspection of
the
po
le
or
ea
rth
ing
sw
itc
h
used the most, then to adapt
the
maintena
nce programme
fo
r
th
e
o
th
e
r
a
p
p
a
r
a
tu
s
de
pe
nd
in
g
on
th
e
re
su
lt
s
observed.
Interv
ention
following
a
guara
nteed max-
imum
short-
-circuit
Under the specific conditions of a guaranteed maximum short--circuit, pro-
ceed as below:
Type of
examination
F
r
e
q
u
e
n
c
y
C
o
m
m
e
n
t
Intervention
After
a
guaran
teed
maximum short--circuit
A
ft
e
r
o
v
e
r
h
a
u
li
n
g
t
h
e
e
a
r
t
h
i
n
g
s
w
i
t
c
h
,
i
t
i
s
re
co
mm
en
de
d
th
at
yo
u
ca
rr
y
ou
t
at
le
as
t
2
C-
-O
c
y
c
le
s
wi
t
h
th
e
a
im
of
che
cki
ng
its
cor
rec
t
func-
tioning.