Kidde Fire Protection ANTARES, Руководство пользователя

Страница: 73 / 91

TM0064 Page 73 of 91 Issue 2.01
Satisfactory operation of the system with other cable types cannot be guaranteed especially
when not wired to the appropriate regulations, i.e. loop wiring run with high voltage (A.C.
mains and above) cabling.
Multi-core Cables
It is not permissible to run more than one detection loop in single cable, but a four core cable
can be used for the feed and return of an individual loop, however, to preserve the integrity of
the loop it is recommended that the feed and return have different paths around the building.
It is not permissible to run any other circuits in the same cable as a detection loop, i.e.
sounder circuits, power supplies, plant shut downs etc, as the induction capacities of the cable
can cause corruption of loop information and/or inter-loop "cross talk".
4.2 CABLE TERMINATION AND INTERNAL ROUTING
It is imperative that the following procedures on cable terminations and routing of cables
inside the equipment are fully adhered to. These procedures have been established to
maintain the equipment's adherence to the European Directive on Electromagnetic
Compatibility (89/336/EEC).
General :-
The preformed knockouts should be carefully removed where required using a small
ball pein hammer and the surrounding paint carefully removed to permit a metal to
metal contact between the enclosure and cable gland. Care must be taken to ensure
metal filings do not fall onto the PCBs.
Metal cable glands must be used for all cable types including Belden and UL cables.
Belden, UL Cables :-
The outer insulating sheath of the cable must be removed using a proprietary cable
stripper. This will expose a number of cable pairs, each pair individually wrapped in
a metallised protective sheath. This sheath must be folded back over the remaining
outer insulating sheath and the metal compression gland to ensure that it has a
permanent bonding to the enclosure. The compression gland must be secured to the
enclosure using a metal locking nut in conjunction with metal shake proof washers.
MICC, Pirelli Cables :-
These cables must be stripped in accordance with the manufacturer's guidelines. The
cable must be secured to the enclosure using metal compression glands and metal
locking nuts in conjunction with metal shake proof washers to ensure that the cable
metal sheath is bonded to the enclosure.