4 Mounting
4.1 Checking environmental conditions and mounting
space
The mechanical and electrical environmental conditions at the installation site must
be within the limits described in the REX615 Technical Manual.
• Avoid installation in dusty, damp places.
Avoid places susceptible to rapid temperature variations, powerful vibrations
and shocks, surge voltages of high amplitude and fast rise time, strong induced
magnetic fields, or similar extreme conditions.
• Check that sufficient space is available.
Sufficient space is needed for the new cutout as well as on the front and rear
of the protection relay to allow access to wires and optical fibers to provide
sufficient ventilation to the protection relay and to enable maintenance and
future modifications.
• Ensure that flush-mounted protection relays can be added and replaced without
excessive dismantling.
Make sure that the ventilation holes are not blocked at any side of the
installed protection relay case.
4.2 Required tools
• T20 Torx (and PH2 for older versions) screwdriver for removing the protective
earthing of the SPACOM relay
• T25 Torx screwdriver for detaching the fixing parts of the existing SPACOM relay
• T25 Torx screwdriver for mounting the REX615 relay
• T20 Torx for connecting the protective earthing of REX615 relay
• PH1 for CT/VT terminals (screw-compression type)
• Cutting tool
Only use adjustable torque screwdrivers.
Mounting 4TLB000504 A
18
Installation Manual
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