832-6063.0 * DESCRIPTION SIMOSEC * REVISION 02 23
Description
8.10 ‘‘Ready-for-service“ indicator for SF
6
gas
The ready-for-service indicator for SF
6
gas shows the gas density in the three-position
switch required to operate the panel.
If a three-position switch filled with SF
6
gas is not ready for operation (see “Checking the
ready for service indicator” on page 42), then:
• Do not energize the switchgear
• Do not operate the switchgear
• Contact the Siemens Field Service (see “Field Service Operation” on page 6).
Features
• Easy to read
• Self-monitoring
• Independent of temperature and pressure variations
• Option:
Alarm switch 1NO + 1NC for remote electrical indication
Fig. 19: Ready-for-service indicator for SF
6
gas
a
Indication of operating state
s
Green area: Panel ready for operation
d
Red area: Panel not ready for operation
DO NOT SWITCH! Isolate this feeder
immediately!
Fig. 20: Principle of
gas density monitoring with
ready-for-service indicator
a
Measurement box in gas-filled stainless-steel vessel
s
Magnetic coupling
d
Indication in red area:
PANEL NOT READY FOR OPERATION
DO NOT SWITCH!
f
Indication in GREEN area:
PANEL READY FOR OPERATION
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