10
INSTALLATION (CONT)
Electrical Installation Guidelines
(1) Isolate all associated power supplies and ensure that they remain OFF
during the procedures.
(2) Ensure that approved and certied cable glands have been tted to the
Termination Unit cable entries where used for eld wiring, with sealing
washers where necessary to maintain the ingress protection rating.
(3) Ensure that any cable gland locking rings are tted before terminating
the cables.
(5) Ensure that approved and certied blanking plugs are tted to all unused
Termination Unit cable entries.
(6) The Termination Unit must be earthed using the internal earth terminal.
(7) Suitable crimps and/or ferrules must be tted when connecting more
than one wire to a Termination Unit terminal.
(8) The eld terminals of the Termination Unit accept single or multi-
stranded wire up to 2.5mm
2
(14AWG). Cables should be routed carefully
to avoid physical and environmental hazards such as mechanical stress
and high temperatures.
(9) In order to ensure correct operation and to meet requirements for EMC,
it is recommended that all eld cables are screened with the cable
screen connected at one end only (see the Technical Handbook).
(10) Avoid earth loops
(11) Surge voltages in excess of 350V between ground (earth) and other
connections can permanently damage the equipment and invalidates
the warranty.
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