Alstom GL314 - Page 111

Maintenance
Electrical contact densimeter threshold in sp ectio n
L51--107EN/01
3/8
06--2003
E ALSTOM
Prep aring the den simeter
Introduction
The densimeter is located at the base of the pole of the circuit--breaker , and
is joined to the SF
6
(or SF
6
+CF
4
) gas volume of the circuit--breaker .
To realize the electrical contact densimeter threshold inspection, it is impera-
tive to isolate the densimeter volume from the pole SF
6
(or SF
6
+CF
4
) gas vol-
ume.
Process
The table below gives the process to preparing the densimeter :
Step Action Diagram
1 Remove the densimeter
(1), held in place by screws
(8), on the housing cover (2)
of the circuit--breaker.
x3
8
HM6--20
0,7 daN.m
2
1
2 Remove the protective
plates (9) and (10), of the
connection valve block (5),
held in place by screws (14)
and (15).
x3
14
HM6--20
0,7 daN.m
x3
15
HM6--20
0,7 daN.m
9
5
10
3 Install the seal (16) on the
connection valve block (5).
16
5
4 Install the connection valve
block (5) on the housing
cover (2), of the circuit--
breaker, using screws (8).
2
5
x
3
x3
8
5 Install the densimeter (1) on
the connection valve block
(5) using screws (15).
NOTE
: Before installing,
check the presence of
seals on the densimeter.
1
x
3
15
HM6--20
8
HM6--20