Siemens 7SC80 Manual page 455

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a screwdriver with a 5 mm to 6 mm (0.20 – 0.24 in) wide blade,
•
a Philips screwdriver size 1,
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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
brackets from the device for that.
NOTE
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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
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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
²
ESD protective equipment (grounding strap, conductive grounded shoes, ESD-suitable clothing, etc.).
Alternatively, an electrostatic charge is to be discharged by touching grounded metal parts.
NOTE
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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 assembled terminals.
NOTE
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Withdraw the battery compartment from the device before disassembly. When removing the battery
compartment, 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:
Unscrew all screws with which the cover is fixed to the device. Remove the protective cap of the GPS/IRIG-B
connection, if any. Now carefully remove the housing.
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017
Mounting and Commissioning
3.1 Mounting and Connections
455