S
PECIAL
E
QUIPMENT
(O
PTIONAL
)
OI 250 (EN)
REV7
/REV0
12.1.3
Test condition
The shut-off valve Q1 is closed, the gas compartments (G1) and
(G2) are disconnected from each other.
The density monitor P1 monitors only the gas pressure in the volu-
me G2, but not the gas pressure in the switchgear gas compart-
ments.
The actuation lever (H) is placed vertically.
The central fill coupling (X1) can be used to change the gas pressu-
re in the volume G2 and check the display as well as the switching
points of the density monitor without influencing the gas pressure in
the switchgear gas compartments.
For this, a suitable test facility (e.g. SF
6
-multi analyser by DILO)
must be used that collects the escaping gas.
In the test condition, the density monitor can be exchanged as well
without emitting any gas to the environment.
In the test condition, the dial of the density monitor is covered to the
greatest part.
When the lever is returned to the position "Operation", it will latch
on its own.
H
Z
ba-246-ha205175
11-04
Summary of Contents for GL 311 F3/4031 P/VE
Page 2: ......
Page 10: ...INTRODUCTION 10 146 OI 250 EN REV7 REV6...
Page 12: ...SAFETY 12 146 OI 250 EN REV7 REV3...
Page 48: ...INSTALLATION 48 146 OI 250 EN REV7 REV7...
Page 80: ...INSPECTION AND MAINTENANCE 80 146 OI 250 EN REV7 REV3...
Page 102: ...RECONDITIONING 102 146 OI 250 EN REV7 REV7...
Page 104: ...END OF LIFE MANAGEMENT 104 146 OI 250 EN REV7 REV2a...
Page 114: ...SPECIAL EQUIPMENT OPTIONAL 114 146 OI 250 EN REV7 REV0...
Page 128: ...REPLACEMENT PARTS AND ACCESSORIES 128 146 OI 250 EN REV7 REV6...
Page 130: ...HANDLING USED SULFUR HEXAFLUORIDE 130 146 OI 250 EN REV7 REV2...