Mounting; Required Tools; Checking Environmental Conditions And Mounting Space - ABB RELION REX640 Installation Manual

1MRS759115 E
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Mounting

4.1

Required tools

• TX25 and TX30 screwdrivers for installing the protection relay with mounting kits
• TX25 and TX20 screwdrivers for mounting the LHMI
4.2 Checking environmental conditions and mounting
space
The mechanical and electrical environmental conditions at the installation site must
be within the limits described in the 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 at 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.
UL listed observation windows:
-
-
REX640
Installation Manual
If the UL enclosure rating should be higher than Type 1, the HMI unit
must be installed behind an observation window. Only the HMI flush-
mounting option is supported.
FTTA/7, Model AMHMI120CCHTP, manufactured by Allied Moulded Products
Inc, measuring overall 302.91 mm × 257.70 mm × 57.68 mm (11.9256 in ×
10.1457 in × 2.2709 in), rated for 1, 2, 3, 3R, 4, 4X, 12 and 13.
Alternatively, any FTTA/7 or NITW rated for 1, 2, 3, 3R, 4, 4X, 12 and 13.
Mounting
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