Description and operation
SF
6
gas monitoring
GE Information
07- 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.
Principle
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
Summary of Contents for GL317D
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