Alstom FKG1X - Page 81

Description and operation
SF
6
gas
monitor
ing
M20
-
-0
02EN03
2/10
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
Threshold densimeter
Function
Permane
nt
SF
6
gas density monitoring.
Localization
 The
thr
es
ho
ld
de
ns
ime
ter
(1)
is
in
sta
ll
ed
on
to
the
co
ntr
ol
bl
oc
k
(2
)
sit
ua
ted
on
the first pole.
1
1
horizontal assembling
vertical assembling
2
2
1
2
FKG1
horizontal assembling
FKG2
FKG2
Working
 The
de
ns
ime
ter
is
fitt
ed
wi
th
two
in
ter
na
l
co
nta
cts
.
The
se
co
nta
cts
clo
se
su
c-
cessively if the gas’s density diminishes and determine 2 distinct thresholds.
The
se
co
nta
cts
ar
e
wi
re
d
to
the
ter
min
al
bl
oc
k
in
si
de
the
cu
bi
cle
an
d
are
us
u-
ally left at the user’s disposal for the following use :
D
Alarm pressure ”
p
ae
” acts as a warning (topping up necessary).
D
Minimum fonctional pressure for insulation ”
p
me
” must be used either to
loc
k
the
cir
cu
it-
-bre
ak
er
in
po
sit
ion
or
to
ca
us
e
au
tom
ati
c
op
en
in
g.
The
op
tio
n
is chosen by the client in keeping with operating requirements.
All the circuit-
-breaker’s rated performan
ces are guarante
ed up to
the mini-
mum
spe
cifie
d
amb
ien
t
tempe
ratu
re
and
the
mini
mum
fonc
tion
al
pre
ssu
re
for
insulatio
n
”
p
me
”.