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C
OMMISSIONING
7.3
Filling the Breaker with Gas
CAUTION
7,5
7,0
6,5
6,0
5,5
5,0
4,5
4,0
3,5
-40
(1)=Nominal Density
(2)=Alarm Density
(3)=Lockout Density
(4)=Liquifaction Curve
56 / 146
As an option, the circuit breaker may be equipped with a separate
density monitor for each pole. The respective operations must then
be carried out for each pole.
All pressure specifications are given in terms of relative pressure
(p
).
e
• Connect the filling hose of the gas-filling device (gas cylinder with
pressure-reducing valve or gas handling cart) to the central
supply connection (DILO DN8 coupling).
• Fill the circuit breaker gradually until rated pressure is reached.
Never set the pressure-reducing valve higher than the rated
breaker pressure.
• After a temperature equalization period of approximately 1 hour,
check the gas pressure again and correct it, if necessary.
• Check all gas piping seals for leaks using a leak detector.
• Screw on the protective cap for the central supply connection.
(4)
Liquid
Gaseous
-30
-20
-10
48,77 g/L
41,58 g/L
39,46 g/L
SF
pressure curve -25°C
6
(ND=0.74 MPa [p
] / UW1=0.64 MPa [p
e
1
Rated pressure curve
2
Alarm pressure curve
3
Lockout pressure curve
4
SF
liquefaction curve
6
OI 250 (EN)
0
10
20
t / °C
] / UW2=0.61MPa [p
e
(1)
(2)
(3)
30
40
50
])
e
-
-
-
-
REV7
/REV6
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