Maintenance
Control of contact densimeter thresholds
P51--1001EN/03
2/8
07--2012
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GRID
Preparing the densimeter
Introduction
The densimeter is at the base of the circuit--breaker pole. It is linked to the
circuit--breaker’ s volume of SF
6
gas (or SF
6
+CF
4
).
To check the contact densimeter’s thresholds, it is mandatory to isolate the
densimeter’s volume from the pole’s volume of SF
6
gas (or SF
6
+CF
4
).
Instructions
The following table defines the procedure for preparing the densimeter:
Step Action Illustration
1
Remove the densimeter
(1), attached by the
fastener (8) to the circuit
breaker pole casing (2).
1
2
x3
8
HM6--20
2 Remove the fastener
(14).
x3
14
HM6--20
3 Install the seal (16) on
the connection valve
block (5).
16
5
4 Install the connection
valve block (5) on the
circuit breaker pole
casing (2) using the
fastener (8).
2
5
1
x3
14
HM6--20
0,7 daN.m
x3
8
HM6--20
0,7 daN.m
5 Install the densimeter
(1) on the connection
valve block (5) using a
fastener (14).
NOTE
: Before
installation, check for
the presence of seals
on the densimeter.
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