Kongsberg Simrad SN90, Installation Manual

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The minimum specifications for the uninterruptible power supply are:
•
Input voltage
: The input voltage must fit vessel supply voltage
•
Output voltage
: 230 VAC, 50 Hz
•
Output power
:
– Processor Unit and display: 1000 W
– Transceiver Unit: 1500 W
•
Output form
: The output AC voltage must be a sine wave
Cables and wiring requirements
Correct wiring is crucial for the operational performance of the SN90.
All cables running between system cabinets located in different rooms and/or on different
decks must be supported and protected along their entire lengths using conduits and/or
cable trays. Note that the cables must not be installed in the vicinity of high-power
supplies and cables, antenna cables or other possible sources of interference.
All transducer cables must be run in steel conduits.
For more detailed information about cables and wiring, refer to the basic cable
requirements.
Compass deviation requirements
SN90 units that are installed on the bridge may have an effect on the compass.
Once the installation is complete, the vessel must be swung with the SN90 in both
operative and inoperative modes.
The shipowner and captain are responsible for updating the compass deviation table
accordingly with regard to the vessel’s national registry and corresponding maritime
authority.
SN90