Installation
74/214 Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • 861-9601.9
21.3 Lining up further panels
➭ Repeat the work operations (see page 64, "Preparing the flanges of the busbar housings")
until all panels are installed.
21.4 Completing switchgear installation
As a precondition for this work, the switchgear must have been completely assembled as
described above (see page 61, "Switchgear installation").
Tightening the busbar
fixing bolts
➭ Tighten the fixing bolts of all busbars and fixed contacts at all panel joints of the switchgear
(tightening torque: 30 Nm).
Checking contact
overlapping of
disconnector contacts
In CLOSED position, the contact fingers must rest exactly on the fixed contact of the
disconnector. Check the contact overlapping with suitable means. For open housing covers,
a welding mirror and a pocket lamp are suitable. For badly visible points, a stick-mounted
camera with a flex handle is suitable.
Fig. 64: Example for correct and incorrect position of the contact fingers on the fixed contact
Fitting protective caps ➭ Fit the protective caps on the bolted busbar joints.
Correcting contact
overlapping of
disconnector contacts
➭ Undo the locknuts ② at the hexagonal sleeve of the disconnector coupling rod ① .
INFORMATION
If required, mount loosely delivered panel connections and earthing busbars before lining up
another panel.
①
Protective cap
INFORMATION
The coupling rod is pre-adjusted at the factory.
➭ In case of bad contact overlapping, check the busbar assembly and the busbar alignment
first. If required, correct the contact overlapping.
➭ If necessary, adjust by means of the coupling rods.
Fig. 65: Disconnector coupling rod
①
Locknuts
②
Hexagonal sleeve of
disconnector coupling rod
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