20 SIPROTEC 7SJ81/7SK81 V4.70, Product Information
E50417-K1150-C462-A2, Edition 02.2012
8 Installation Notes
Housing for installation in panels, racks, or cubicles
Remove the 2 covers at the top and bottom of the front cover. Thus,
4 elongated holes are revealed in the mounting bracket and can be
accessed.
Insert the device into the panel cut-out and fasten it with four screws.
Mount the 2 covers again.
Connect a solid low-ohmic protective and operational ground to the
grounding terminal of the device. The cross-section of the cable used
must correspond to the maximum connected cross-section but must be at
least 2.5 mm
2
.
If the device was opened, for example, to replace the fuse or the commu-
nication module, make sure that the RJ45 connectors are inserted prop-
erly into the housing cutouts of the rear wall when you insert electronics
into the housing.
NOTICE
Beware of electrostatic discharge. Non-observance of the safety notes
can result in material damage.
• The printed circuit boards of digital equipment contain CMOS circuits.
These shall not be withdrawn or inserted under live conditions!
• The modules must be so handled that any possibility of damage due to
static electrical charges is excluded. During any necessary handling of
individual modules or printed circuit boards the recommendations relat-
ing to the handling of electro-statically endangered components (EEC)
must be observed. In installed conditions, the modules are in no danger.
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