Checking Service Readiness; 12.10 Fastening The Panel To The Foundation - Siemens 8DJH Installation And Operating Instructions Manual

Checking the auxiliary
switch
Switchgear fixing
500-8067.9 • INSTALLATION AND OPERATING INSTRUCTIONS • 8DJH • Revision 05
12.9

Checking service readiness

The switchgear vessels are filled with insulating gas and are under pressure. Before starting
installation, the gas filling of the panels must be checked by means of the ready-for-service
indicator.
➭ Read the ready-for-service indicator (see page 85, "Ready-for-service indicator").
✔ If the pointer of the ready-for service indicator is in the green area, the gas density is in
order.
If the pointer of the ready-for-service indicator is in the red area:
➭ Check the auxiliary switch of the ready-for-service indicator.
During transport, the auxiliary switch of the ready-for-service indicator can latch tight in the
red area due to vibrations.
➭ Unscrew the front cover of the switchgear. Push the roller lever of the auxiliary switch
carefully towards the switch.
Fig. 29: Roller lever and sector disc of the
ready-for-service indicator
① Roller lever
✔ The sector disc must return automatically until the pointer of the ready-for-service indicator
is in the green area again. If not, please stop the installation and contact the regional
Siemens representative.

12.10 Fastening the panel to the foundation

Each panel or each panel block must be firmly bolted or welded together with the foundation
of the switchgear room. The fastening and the foundation must absorb the stress arising from
vibrations and faults such as a short circuit in the grid or internal arcing. The switchgear must
not detach from the foundation as a result of such stress.
Depending on the type of fastening, the following work operations are required:
➭ Bring the panel into position.
➭ Remove the cable compartment cover, see page 76, "Removing and mounting the cable
compartment cover".
ATTENTION
If the cross member was removed, the bracing required for the stability of the panel during
movement is missing.
➭ If the cross member is removed, do not move the panel.
Fig. 30:
② Auxiliary switch ③
Pointer position after operation of
the roller lever at the auxiliary
switch (example)
Sector disc
Installation
57/121