Assembly Of The Switchgear; Bolting Panels Together - Siemens 8BT2 Installation And Operating Instructions Manual

Putting down and
aligning
the transport units
to the switchgear room
4.3.

Assembly of the switchgear

4.3.1.

Bolting panels together

Tightening torques
30
mounting position.
Lift transport unit with suitable lifting gear or roller crowbar.
Place the first (i.e. rearmost) transport unit as exactly as possible on its mounting
position and place the second one at a distance of approx. 200 - 300 mm, so that the
units can still be aligned before bolting together.
Align the first left-hand or right-hand panel of the row correctly on the base frame and
then align the remaining panels with the first panel.
Lay shim plates under the transport units according to the measuring sheet of the base
frame.
Remove packing and transport materials from the place of installation. Remove any dirt
occurred during transport, as extreme cleanliness is required during installation.
Now the transport units are in the correct order for assembly.
NOTE!
Make sure that there are no transport damages on the panels.
Level the base frame according to DIN 43 661.
Prepare the materials and auxiliary devices required for installation.
To assemble the switchgear, the below steps should be followed:
• Align the panels by using fixing tools
• Bolt the panels together
• Fasten the panels to the foundation
• Open the busbar comparment
• Assemble and interconnect the busbars
• Close the busbar comparment
• Assemble and interconnect the earthing busbars
• Install the end wall
• Assemble and interconnect the closed pressure relief duct at the top or only assemble arc
routing plates at the top (It depends on the switchgear condition determined by the
customer).
For perfect operation of 8BT2 switchgear it is necessary to align the individual panels and
bolt them firmly together after erection.
Screw's tensile class should be 8.8.
ATTENTION!
Apply the tightening torques at the following tables to perform the bolted copper
and joints properly.
NOTE!
The bolted copper joints effects on the performance of the electrical conductivity.
The bolted steel joints effects on the performance of the earthing and mechanical
strength between steel parts.
Use strain washers for the bolted copper joints.
Use contact washers for the bolted steel joints
Revision 04 * INSTALLATION AND OPERATING INSTRUCTIONS 8BT2 * 881-4027.9