Power Requirements 3-3
3.3 Power Requirements
The Series 3000 requires AC power to operate. The power source requirements are
115 VAC, 50–60 Hz, single phase or 230 VAC, 50–60 Hz. The system is designed
to protect against over and under voltage and transient spikes. However, it is
always best to check the power source carefully before operating the equipment.
Ensure that the power source is within the required operational tolerances, with
minimal noise and voltage spikes. As the quality of onboard AC power varies from
vessel to vessel, it is best to actually check the AC power source with a voltmeter
or an oscilloscope.
Confirm that the TPU and the computer are set to the local voltage (115 VAC or
230 VAC) and that the proper transformer (115 or 230 VAC to 12 VDC is used for
the Ethernet Hub). Since a variety of power connectors are in use throughout the
world, it may be necessary to use an adapter or to cut off the US-type plug and re-
terminate it with a new plug. In the event that the power cord for the TPU must be
re-terminated, the wires should be connected in accordance with Table 3-1.
3.3.1 Power Line Fuse
The main AC power input line is protected by two 2-A, 5 x 20-mm slow-blow
fuses rated for 250 volts (P/N 13000045). These fuses are located on the rear
connector panel above the power cord receptacle. Before changing the fuse, be
sure that the TPU is disconnected from its power source. To remove the fuse, lift
the tab and pull out the fuse insert. A spare fuse should also be located there.
CAUTION Application of improper AC power may damage the Series
3000 Sonar System. Do not turn the equipment on until you have checked
the supply voltage and frequency.
Table 3-1: TPU Power Cord Wiring
COLOR FUNCTION
Green Ground (earth)
Blue or white Neutral
Brown or black Hot
CAUTION Do not replace a fuse with one with a higher current rating. Do
not bypass the fuse. Failure to observe this caution may cause damage to
the equipment and void the warranty. If fuses blow repeatedly, there is a
problem that must be corrected before attempting further operation.
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