INSTALLATION
FIXED STATIONS
410 ENVOY™ TRANSCEIVER REFERENCE MANUAL
AC mains power supply
Codan provides a 3020 Transceiver Supply, which can be used with transceivers
operating on speech and data communications.
CAUTION: If the distance between the transceiver supply and the transceiver
requires the cable to be extended, the cable size may need to be
increased to minimise voltage drop.
Related links:
Connecting the AC mains supply on page 411
Battery power supply
Standby batteries are usually used to supply power to the transceiver in case of a mains
failure. Sometimes, batteries are used with solar panels to supply the power to fixed
stations.
Batteries need to be well-charged and in good condition to ensure effective operation.
Poor condition of the battery usually leads to poor performance of your transceiver.
This includes reduced power output and signal distortion during transmission.
Power supply factors
Voltage drop
The most common causes of voltage drop along a cable are:
• the diameter of the wire is too thin
• the length of the cable is too long
The average current consumption of a transceiver is low except during transmission
of voice and data peaks, where high current is needed for short intervals. The power
supply cable needs to be sufficiently heavy to supply these current peaks without
excessive voltage drop.
Incorrect wiring techniques, including poor choice of connection points and incorrect
use of terminal lugs, can also cause a voltage drop.
Related links:
Power and control cabling on page 394
Fuse protection
An external fuse must be fitted in the positive wire as close as possible to the battery
to ensure there is no risk of fire if the cable is damaged. The fuse must be of a type
that has a low voltage drop at peak currents.
NOTE: A 32 A cartridge fuse (Codan part number 15-00711) is recommended.
Related links:
Protecting the cables on page 396
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