GE GL317D, Instruction Manual

Page: 131 / 296

Installation
Calculation of the SF
6
gas filling pressure
for using the pressure gauge (tool)
GE Information
L31- 921EN/03
3/4
02- 2017
Calculation of the filling pressure at site
Measurement Write down the result measurement into the corresponding box :
Measure the atmospheric pressure in MPa. A ,
Measure the ambient temperature in

C. B
Calculation of the
pure SF
6
gas filling
pressure
Transfer the values into the corresponding box and write down the result :
With the help of the table (page 4) “Values of the SF
6
gas
effective pressures in accordance with the temperature”,
determine the value “ p
re
“ in accordance with
the ambient temperature ( B )
"
p
re
C
,
Value of the reference atmospheric pressure in MPa D 0
,
1 0 1
Transfer the value of the local atmospheric pressure
( A )
"
A
-
,
Calculate the difference of the atmospheric pressure
( D - A )
"
E
,
Transfer the value ( C )
"
C
+
,
Calculate the rated effective pressure
( E + C )
"
F
,
The filling with SF
6
gas is carried out
to the calculated pressure, plus 0.01 MPa,
+
0
,
0 1
( F + 0.01 )
"
G
,