Installing The End Wall; Connecting The Station Ground Grid To The Switchgear Frame - Siemens SIMOSEC Operating Instructions Manual

Installation
52
12.6

Installing the end wall

The installation of the switchpanels is completed by installing the second end wall (see
"Installing the panels" on page 44).
12.7

Connecting the station ground grid to the switchgear frame

The switchgear must be connected to the station ground grid at the grounding points.
The position of the grounding points is shown in the dimension drawing.
Recommended points of connection for the station ground:
• the two end panels
• every third panel of the switchgear
• each metering panel.
The station ground can be optionally connected to the panel internally or externally.
Select mounting direction of station ground (internal or external).
Bolt the station ground to the switchgear frame (apply 52 lbs·ft or 70 Nm).
Check that the switchgear frame is properly grounded.
Fig. 44: Switchgear frame with grounding point (bolted joint M12)
REVISION 02 * INSTALLATION SIMOSEC * 832-6063.0
a
Right end panel
s
Station ground connection
d
Nut M12
f
Cable lug
g
Panel frame
h
Conical spring washer
j
3 washers
(inner diameter 17mm, outer
W
diameter 51 mm )
k
Carriage-head bolt
l
Grounding point
;
Left end panel