Checking The Sf6 Gas Pressure - Siemens 8DA10 Series Installation And Operating Instructions Manual

Installation
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20.7 Checking the SF
To exclude any gas losses caused by transportation in the gas compartments filled at
the factory, the indications of the gas pressure manometers at the panels must be checked.
Insufficient gas filling can cause injury or property damage.
Operating the switchgear without service readiness due to insufficient gas filling can
cause injury and the destruction of parts of the switchgear.
➭ Before performing any switching operation, check the gas pressure in the compartments
pre-filled at the factory on the associated gas pressure indicators. The values must not drop
below the temperature-dependent limit values.
➭ Do not install, commission or operate a switchgear with incorrect or too low SF
pressures. If required, isolate the switchgear and put it out of service.
➭ Inform the competent regional Siemens representative.
Fig. 37: Gas pressure manometers at the panel
Fig. 38: Indication of gas pressure manometer
Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • 861-9601.9
gas pressure
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CAUTION
① Gas pressure manometers for
the busbar compartments
② Gas pressure manometers for
the circuit-breaker /
panel connection housings
① Signaling contact: Pressure lower
than minimum functional level
②
Signaling contact:
Minimum functional level 100 kPa
③
Gas pressure indicator:
Rated functional level 120 kPa
④ Signaling contact:
Maximum functional level 180 kPa
The data in kPa are values at 20 °C
ambient air temperature
gas
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