8 GHA l Switchgear extension and replacement of a panel
2 Panel description
Warning!
Confusing the busbar system involves a risk of injury. The term
Busbar 1 (BB1) refers to the busbar arranged in the rear area of the
panel, and the term Busbar 2 (BB2) to the busbar arranged in the up-
per part of the panel.
On the mechanical operator interface, the standard designation for
the upper busbar is Busbar 1 and for the lower busbar, Busbar 2
(Fig. 2).
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General