Assembly Of The Switchgear; Preparatory Work; Checking The Sf 6 Pressure In The Gas Compartments - ABB ZX0 Manual For Installation And Operation

2.3 Assembly of the
switchgear
2.3.1

Preparatory work

2.3.1.1 Checking the SF
pressure in the gas
compartments
Each panel block (= delivery unit) forms a gas compartment and is
fitted with one filling connector. The filling connectors are located
in the low voltage compartments and are accessible from the front
when the low voltage compartment door is open.
− Check the gas pressure in each gas compartment with
a temperature-compensated pressure gauge (see list of
tools) before aligning and connecting the panel blocks, as
follows:
Fig. 2.3.1.1.1: Filling connector (1) with protective cap (2) in the low voltage
compartment
1
2
Fig. 2.3.1.1.3: Filling connector with pressure gauge (5) and locking ring (4)
5
− Remove the protective cap (2) from the filling connector (1)
by turning it counter-clockwise.
?
− While pulling the locking ring (4) outwards, press the cou-
pling of the pressure gauge (5) into the filling connector.
− Check the reading on the scale of the pressure gauge.
6
?
than 1000 m, please contact us.
− Remove the pressure gauge by pulling out the locking
ring on the filling connector.
− Screw the protective cap onto the filling connector.
Fig. 2.3.1.1.2: Filling connector (1) with valve pin (3)
4
Do not press the valve pin (3) in, as otherwise gas will
flow out of the valve.
The reading must be in the green area of the instru-
ment's scale. If it is not, or if the site altitude is greater
1
3
Manual ZX0 HB 600 en - Revision 05 | 19