GE SF6 Instruction Manual page 183

Densimeter threshold inspection, continued
Testing
08- 2016
Maintenance
Electrical contact densimeter threshold inspection
The table below gives the steps of densimeter testing:
Step Action
1 Connect a test lamp to the
"Alarm pressure for the insu-
lation" p
ae
threshold.
2 Calculate the effective pres-
sure at which the "Alarm
pressure for the insula-
tion" p contact switches
ae
over - corrected in keeping
with temperature and local
atmospheric pressure.
3
D Create a leak by unscrewing
the "REGULATION" screw (20) -
of the gauge (11) -, making sure
that the contact switches over at
the previously calculated value.
D Proceed in the same way to
check the contact of "Minimal
pressure for the insulation" p
GE Information
Connection to the terminal block of
the operating
densimeter accordance with the electrical dia-
gram.
Value p : see technical charac-
ae
teristics).
See the module "Calculation of
the SF gas filling pressure to
6
using the
(tool)".
.
me
20
If one of the thresholds does not
comply with the specified value,
replace the densimeter.
Comment
mechanism in
pressure gauge
11
L51- 108EN/06
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