Installation
Calculating the SF
6 gas filling pressure
For u sing th e pressure gau g e (tools)
P31--9001EN/02
1/4
01--2011
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GRID
Presentation
Introduction
The SF
6
gas perssure values, for filling, must be read on the pressure
gauge 0...1 MPa (tooling). Do not take any account of the reading on the
densimeter dial (MPa -- psi), as it is not precise enough for the filling.
Pressure gauge 0...1 MPa
Units of pressure
(reminder)
D The international unit of pressure is the pascal (Pa).
1 bar = 1 000 hPa
1 bar = 100 kPa
10 bar = 1 MPa
Symbols
IEC symbols for the technical characteristics of the equipment.
Symbol Description
p
re
Assigned filling pressure for insulation
p
ae
Alarm pressure for insulation
p
me
Minimum insulation pressure
In this module
This module covers the following subjects:
Subject Page
Example of filling pressure calculation 2
Calculating the filling pressure on site 3
Corrected SF
6
gas relative pressure values
for temperature
4
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