Installation
78/214 Revision 06 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DB10 • 864-5091.9
Correcting contact
overlapping of
disconnector contacts
➭ Undo the locknuts ② at the hexagonal sleeve of the disconnector coupling rod ① .
➭ Modify the length of the disconnector coupling rod by turning the hexagonal sleeve ① ,
so that the contact fingers are resting exactly on the fixed contact of the disconnector in
CLOSED position.
Fig. 74: Example for correct and incorrect position of the contact fingers
on the fixed contact
➭ Verify proper contact overlapping after several switching operations with
the operating mechanism of the three-position disconnector.
➭ Tighten the locknuts ② again with a tightening torque of 20 Nm.
Fig. 73: Disconnector coupling rod
①
Hexagonal sleeve of
disconnector coupling rod
②
Locknuts
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