Description and operation
SF
6
gas monitoring
GE Information07- 2016 L20- 001EN/08
1/6
Presentation
Introduction
The circuit- breaker uses pressurized SF
6
gas as electric arc quenching gas.
The SF
6
gas pressure monitoring is essential to assure the circuit- breaker
performances.
Principl e
There is two SF
6
gas pressure monitoring types :
D Permanent monitoring with the help of a threshold densimeter.
D Periodic monitoring with the help of a dial densimeter (visual control)
Symbols
IEC symbols for the apparatus technical characteristics.
Symbol Designation
p
re
Filling rated pressure for the insulation
p
ae
Alarm pressure for the insulation
p
me
Minimal pressure for the insulation
In this module
This module contains the following topics :
Topic Page
Gas pressure and density 2
Pressure measurement 3
Measuring density 4
Densimeter 5
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