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Alstom FKG1X - Page 209

Alstom FKG1X
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Maintenance
Maintena
nce
plan
G51
-
-0
01EN07
12/18
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
Detail of
circuit-
-breaker maintenanc
e operations
, continued
Condition of
crontr
ol
rod system
Check presence and condition of retaining clips and spacer washers on the
axles of the control rod/crank assembly.
During all dismantling of the
control rod assembly
,
replace the retaining clips
removed by new ones of the same type. For correct orientation of clips see
section entitled : “ERECTION”.
Electrical densimeter
thresholds
Check the electrical contact SF
6
densimeter thresholds.
If the values found are outside required tolerances replace the densimeter.
Operati
ng
times of
poles and
auxiliar
y
contacts
Mea
su
re
the
op
er
ati
ng
tim
es
of
po
le
s
an
d
au
xil
ia
ry
co
nta
cts
,
fol
lo
wi
ng
pr
oc
e-
dure in section entitled : ”PRE-COMMISSIONING INSPECTIONS”.
If
the
va
lu
es
fou
nd
are
ou
tsi
de
tho
se
gi
ve
n
in
the
do
cu
me
nt
Ac
ce
pta
tio
n
Cr
i-
teria” contact
ALSTOM Grid
S.A. Customer Service
.
Measu
reme
nt
of
con-
tact resistance
see section
“MESUA
RING
MAIN
CIRCUIT RESISTA
NCE”
Thi
s
op
er
ati
on
mu
st
be
pe
rfo
rme
d
for
thefirst
tim
e
at
fac
tor
y
,
the
va
lu
es
fou
nd
are taken as a reference to judge how the apparatus evolves with time.
CAUTION
: BEFORE ANY MEASUREM
ENTS ARE TA
KEN IT IS
ABSO-
LUTEL
Y
NECES
SAR
Y
THA
T
THE
APP
ARA
TUS
BE
ELECTR
ICALL
Y
AND
MECHANICALL
Y
INOPERATIVE.
Tightening of
mountings
Check and adjust, with a torque wrench, the tightening torques of screws on
sub--assemblies not subjected to gas pressure. The tightening torques are
given in paragraph ”Tightening torques”.
Tightening
LV terminals
With the electric cubicle out of service, check that the connectors and tips of
con
duc
tors
are
tigh
tene
d
corr
ectl
y
and
che
ck
the
torq
ue
of
con
nec
tion
mou
nt-
ings.
T
oo
l
us
ed
:
4
mm di
am
ete
r
scr
ew d
ri
ve
r
, for
ter
min
al
s of
the
En
tre
le
c
typ
e
(for
exampl
e).
CAUTION
: SCREWS ON
TERMIN
ALS MUST NOT
BE OVER-
-TIGHT-
ENED.
Relay operation
Che
ck
rel
ay
ope
ratio
n
by
exe
cuti
ng
the
foll
owi
ng
circ
uit-
-brea
kersequen
ces
:
D
closing lock--out,
D
automatic opening,
D
Continued on next page.

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