Furuno FS-1562-15, FS-1562-25 manual Power Supply Unit, AC and DC power switches, Fuses

1.3 Power Supply Unit

The transceiver unit FS-1562-15 or FS-1562-25 works direct on 24 VDC or through a Power Supply Unit on AC mains supply (115 or 230 VAC). The power supply unit is type PR-300 supplying 24 VDC power (20 A) to the FS-1562-15 (150 W) Transceiver Unit or type PR-850A, supplying 24 VDC (40 A) for the FS-1562-25 (250 W). Both 115/230 VAC and 24 VDC power can be connected simultaneously. In this case, the system normally operates on the AC mains supply and when AC power is lost, the PSU automatically switches to the DC power source.

This power supply arrangement satisfies the GMDSS requirements. The FS-1562-15/25 can be operated direct from 24 VDC without a rectifier unit.

OVEN power supply: The crystal oven is always powered even when the Power Switch is OFF. It draws 50 mA approx. The Oven LED lights while the oven is powered.

AC and DC power switches

Both AC and DC power switches on the PSU can be always kept “on”. (These switches are provided to turn off the power supply for maintenance.) The transceiver may be turned on or off with the PSU kept on.

BREAKER POWER LAMP

RED LIGHT GREEN LIGHT

POWER

ON

ON

PR-300

OFF

100V	10A	125V 20A
220V	5A

ON	ON
OFF	OFF
AC IN	DC IN	DC OUT	-
L N G	+ -	+ - 24V +

AC INPUT 50/60Hz DC OUTPUT

TERMINAL COVER

FRONT PANEL OF PR-300 FRONT PANEL OF PR-850A

Lamp (red): Lights when AC power source is in use.

Lamp (green) Lights when DC power source is in use.

NOTE: Both lamps light when changing to DC power supply (PR-300). These lamps also light when the internal temperature excessively rises. The PR-300 or PR-850A is not required on 24 VDC vessels.

Fuses

The PR-300 has 2 fuses, each for AC and DC power.

100-120 VAC:	10 A
200-240 VAC:	5 A
DC fuse:	20 A

The PR-850A has a breaker and a power lamp on the front panel. The fuse is provided in the power cable.

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