Siemens 8BT2 Installation And Operating Instructions Manual page 62

Preconditions
Removing
the rear cover
Removing
the rear cover
62
DANGER!
Risk of injury! During operation of electrical equipment and switchgear, parts of this
equipment are under dangerous electrical voltage. Mechanical parts may move quickly,
even remotely controlled.
Do not remove covers before reading the instruction.
Do not reach into openings.
Do not touch circuit breaker poles and operating rods.
• Earthing switch closed, see Page 78 – clause 6.10, "Operating the feeder earthing switch"
• Truck removed from the panel, see Page 71 – clause 6.6, "Racking the switching device
truck to Test position"
• Upper shutter closed
• Lower shutter closed
• High-voltage door closed
There are two possible conditions which there are different processes:
i. Cable compartment without withdrawable VT
ii. Cable compartment with withdrawable VT
i. Cable compartment without withdrawable VT
Remove 18x M10 bolts from the rear cover (fig70).
Remove rear cover (fig70).
Fig70. Removing the rear cover
Access to the cable compartment possible from the rear.
ii. Cable compartment with withdrawable VT
The rear cover cannot be removed unless the withdrawable voltage transformers are
disconnected.
Fig71. View of the rear cover
Move two operating levers (pos.nr.
Revision 04 * INSTALLATION AND OPERATING INSTRUCTIONS 8BT2 * 881-4027.9
in fig71) at the same time as shown in fig72.