Siemens 8DA10 Series Installation And Operating Instructions Manual page 124

Installation
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Example: Solid-insulated bar connection
Depending on the design option of the switchgear, the solid-insulated bar connection is
available with or without three-position disconnector.
The solid-insulated bar connection must be assembled on site.
The busbar housings must be free from gas.
Perform the following assembly operations for all switchpanel poles:
➭ Remove the provisional cover at the busbar housing. Keep the removed bolts and conical
spring washers for later installation. Dispose of the spacing nuts required for transport in an
environmentally compatible way.
Fig. 145: Unscrewing the covers and removing
the sealing rings
➭ Insert a new sealing ring and the solid-insulated bar connection.
Fig. 146: Solid-insulated bar
➭ Mount the solid-insulated bar using the previously removed bolts and contact washers.
Tightening torque: 20 Nm.
Fig. 147: Fixing points at the pressure ring
➭ Evacuate the busbar housings and fill with SF
➭ The solid-insulated bar connection is disassembled in reverse order: Remove the bolts from
the pressure ring of the solid-insulated bar connection. Remove the solid-insulated bar
connection and the sealing ring. Insert a new sealing ring and bolt the cover onto
the connection housing.
Revision 11 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DA10 • 861-9601.9
①
Provisional cover
② Sealing ring
③
Busbar housing
①
Solid-insulated bar with integrated
pressure ring
②
Pressure ring
③ Contact stud
④
Sealing ring
⑤ Connection cover for solid-insulated bar
① Solid-insulated bar
② Pressure ring
③
Connection cover for solid-insulated bar
④ Busbar housing
gas.
6