GE GL317D Instruction Manual page 129

Presentation
Introduction
Pressure units
(reminder)
Symbols
In this module
Important
02- 2017
Installation
Calculation of the SF
for using the pressure gauge (tool)
SF pressure values, for the filling, must obligatorily be read on the pressure
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gauge 0- 1 MPa (tooling). Pay no attention to indications given by the dial
densimeter (MPa - psi), it is not accurate enough for the filling.
D The international unit pressure is the Pascal (Pa).
1 bar (14.503 psi) = 1,000 hPa
IEC symbols for the apparatus technical characteristics.
Symbol
p Filling rated pressure for the insulation
re
p Alarm pressure for the insulation
ae
p Minimal pressure for the insulation
me
This module contains the following topics :
Example of the filling pressure calculation
Calculation of the filling pressure at site
Values of the SF gas pressures in accordance
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with the temperature
The filling pressure may be incorrectly shown at low temperatures due to the
risk of partial liquefaction of the SF
filling or top- up operations be carried out at low temperatures (L) from the
tables entitled "Effective, temperature- corrected SF
GE Information
gas filling pressure
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Pressure gauge 0...1 MPa
1 bar = 100 kPa
10 bar = 1 MPa
Designation
Topic
gas. It is therefore not recommended that
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Page
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gas pressure values".
L31- 921EN/03
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