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Mounting and Commissioning
3.1 Mounting and Connections
3.1.2
Hardware Modifications
3.1.2.1 Disassembly
Work on the Printed Circuit Boards
Note
Before carrying out the following steps, make sure that the device is not operative.
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. To do so, perform the steps
stated in Sections Panel Flush Mounting, Panel Surface Mounting or Cubicle Mounting in reverse order.
Note
The following must absolutely be observed:
Disconnect the communication connections at the device bottom (ports A and B). 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.
306
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A5, Release date 11.2012
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