Verification Of Safe Isolation From Supply (Lrm System) - Siemens 8BT2 Installation And Operating Instructions Manual

Replacing fuse links
6.12.

Verification of safe isolation from supply (LRM system)

86
Assure that all voltage transformers are equipped with fuse links and fully mounted.
Insert the rear cover by means of the handles (in fig96).
Push down the operating levers to connect the withdrawable voltage transformers
(fig96).
While pushing down the operating levers the rear cover interlocking (pos.nr.
is locked.
Fig96. Operating handles for withdrawable voltage transformers (movement for connecting)
The voltage transformers are connected, locking on both sides are locked and the inner
shutter is open.
Check by looking through inspection window (pos.nr.
is open.
Remove the two operating levers.
The cable compartment is closed.
The panels can be equipped with voltage detecting systems.
Use voltage indicators according to IEC 78/183/CDV only.
The perfect function of the voltage indicator must have been verified:
• with a test unit according to IEC 78/183/CDV
• on live equipment
The perfect function of the coupling section must have been verified according to:
• IEC 78/183/CDV
Plug voltage indicator in all three phases L1, L2, L3 of the interface.
Fig97: VOIS+: Cover closed
Revision 04 * INSTALLATION AND OPERATING INSTRUCTIONS 8BT2 * 881-4027.9
in fig91)
in fig91) that the inner shutter