
Mounting and Commissioning
3.1 Mounting and Connections
SIPROTEC, 6MU805, Manual
C53000-G1140-C380-5, Release date 06.2018
75
Note
Apart from the communication modules and the fuse, there are no further components that can be configured
or operated by the user inside the device. Any service activities exceeding the installation or exchange of com-
munication modules must only be carried out by Siemens personnel.
For preparing the workplace, a pad suitable for electrostatic sensitive devices (ESD) is required.
Additionally, the following tools are required:
• a screwdriver with a 5 mm to 6 mm (0.20 – 0.24 in) wide blade,
• a Philips screwdriver size 1,
• a 5 mm (0.20 in) socket or nut driver
In order to disassemble the device, first remove it from the substation installation. Remove the mounting brack-
ets from the device for that.
Note
The following must absolutely be observed:
Disconnect all communication connections from the device. If this is not observed, the communication lines
and/or the device might be destroyed.
Note
To use the device, all terminal blocks must be plugged in.
Caution!
Mind electrostatic discharges
Failure to observe these precautions can result in personal injury or material damage.
Any electrostatic discharges while working at the electronics block are to be avoided. We recommend ESD pro-
tective equipment (grounding strap, conductive grounded shoes, ESD-suitable clothing, etc.). Alternatively, an
electrostatic charge is to be discharged by touching grounded metal parts.
Note
In order to minimize the expenditure for reconnecting the device, remove the completely wired terminal blocks
from the device. Mark the terminal blocks to prevent inadvertent swapping when connecting them again. To do
so, open the elastic holders of the current terminal blocks in pairs with a flat screwdriver and remove the block
and the other connectors. When reinstalling the device, insert the terminal blocks back into the device like as-
sembled terminals.
Note
Withdraw the battery compartment from the device before disassembly. When removing the battery compart-
ment, the device buffer and the fault records are deleted. You may want to save the device buffer and fault
records first.
In order to install or exchange communication modules or to replace the fuse, proceed as follows: