
Description and operation
SF
6
gas monitoring
M20--002EN03
8/10
02--2011
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GRID
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 “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
,
Содержание FKG1X
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