INSTALLATION
FIXED STATIONS
ENVOY™ TRANSCEIVER REFERENCE MANUAL 411
Noise interference
The transceiver has noise-rejection circuitry and, provided correct connection and
routing of the power cable are established, noise interference via the power cable
should be kept to a minimum.
For situations where noise and interference from the vehicle is excessive, Codan
recommends that you use the Vehicle Interference Suppression Kit (Codan part
number 15-00704).
Related links:
Connecting the battery supply on page 395
Wiring techniques
Correct wiring techniques can reduce voltage drop. These include choosing good
connection points and using terminal lugs correctly.
WARNING: It is essential for every mains-energised installation to have an
effective connection to the protective earth of the power distribution
system in case the basic insulation fails.
WARNING: Without protective earthing, dangerous voltages may be applied to
accessible metal parts.
A 3-wire mains cord has an earth wire that provides an effective earth, and is therefore
electrically safe. A 2-wire mains cord lacks a protective earth wire, so one must be
established by bonding the transceiver supply to an earth stake driven into the ground,
or to some other low-impedance earth connection.
Related links:
Connecting the AC mains supply on page 411
Connecting the power supply
Connecting the AC mains supply
An AC mains or a generator-based supply may be used as a direct source of power to
a transceiver power supply in a fixed station.
To connect an AC mains supply:
1 Fit the plug from the transceiver supply into the AC mains socket.
The transceiver supply converts the AC power supply to DC.
1 Connect the transceiver supply to the transceiver via the DC power leads.
1 Ensure the transceiver is earthed correctly.
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