Connecting Power; Power Source - Furuno Inmarsat FleetBroadband FELCOM251 Installation Manual

3.

CONNECTING POWER

3.1

Power Source

There are different options for the power supply:
• 24V DC from ship.
• 12V DC from ship. Note that the maximum allowed source impedance is much low-
er for a 12V DC supply than for a 24V DC supply. Refer to section 3.2.2 for correct
cabling and impedance calculations.
• A 100 - 240V AC supply provides power through an AC/DC power supply.
Be aware of high start-up peak current: <20 A at 24V, <5 ms.
The Communication Unit is equipped with an internal 20 A Fuse, so no external fuse
is necessary in order to protect the Communication Unit.
However the ship's AC or DC outlet should be protected, in order to protect external
power cable wiring & connector.
For DC operation a 30 A fuse or circuit breaker is recommend.
For AC operation a 10 A fuse or circuit breaker is recommend.
3-1