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Figure 91. Installed gas vent duct
4.6.2 Connecting the gas vent ducts
a) Install the lower locking bracket
Figure 92. Lower locking bracket
b) Install the upper locking bracket bar and screw up the
screws (2 hexagonal bolts with flange M6x10)
Figure 93. Upper locking bracket
Figure 94. Installation of the locking brackets
Figure 95. Connected gas vent duct; additional duct and end plate
Figure 95 shows an additional duct and end plate. Connecting
these parts can be done in the same way as in the previous
stages. An additional duct is used in the end unit to direct any
gas due to arc faults out of the switchgear room.
The switchboard is always provided with an additional duct
1 metre long. On request an additional duct with a maximum
length of 2 metres can be supplied.
In the case of 750 mm units:
a) Install the large bottom plate
b) Install the plate in the centre of the gas vent ducts.
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