Ziton ZP3, Installation Operation & Maintenance

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ZP3 Fire Control Panel
ZP Wiring Guide
ZP3 Fire Control Panel Manual
Page W - 2 UD1160.W Iss 6 (25/02/2005)
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1.2 Panel Power Supply Connections
Mains Supply:
Effective functioning of the system is dependant on the correct connection of the panel
power connections and must be wired as per panel wiring schematics found in the panel
engineering manual.
Important: The panel must be connected to a source of power, which is both clean
and reliable. The power source should not be shared by electrical
equipment, which causes electrical noise or spikes. If the quality of the
power feeding the panel is suspect and electrical noise is present,
assistance should be sought from Ziton regarding earthing and surge
protection.
Earth Connection:
The panels, power supplies and cables making up the fire detection system should be
connected to earth at one point only. This earth point must always be at the panel. The only
exception to this is when MICC cable is used. In this case the cable shield may be
connected at other points in the building.
The panel will normally be located in a building which allows only limited earthing options.
The following are the preferred rules which should be followed, however in practice following
these rules may not always be possible and the actual building environment needs to be
carefully studied in order to develop a satisfactory earthing strategy.
Normally the panel will be connected to the nearest external earth point. This external earth
point may vary in quality, from a high quality instrumentation earth to the earth used by the
electrical reticulation system. This external earth point will in turn be connected to the main
building earth system.
The earth connection should preferably follow the following guidelines:
•
It should be a clean earth, preferably not shared with other electrical devices. High
energy equipment should be connected to an earth point which is as close as possible
to true earth.
•
Wiring codes normally require it to be bonded to the main building earth for safety
reasons.
•
The resistance to true earth should be as low as possible.