Power Solutions for Marine Application

Following are actual cases of on-board issues resolved using interVOLT’s Power Conditioner series solutions. The issues addressed in these cases are problems that could affect any vessel operating a 12 or 24 VDC system as the primary power source for operating any electrical and electronic equipment.

Case A: Voltage drop affecting HF radio performance

Problem: A cruising class yacht was fitted with a well known brand of High Frequency (SSB) radio and connected to the on-board 12.0 Volt DC supply. The manufacturers specification called for a constant 13.5 VDC in order to obtain peak performance. It was noted that a drop in the input voltage of just 1.0 VDC resulted in a considerable reduction in transmitting power (signal clipping) of approximately 20% (at peak). As HF radio’s can draw considerable current in transmitting mode, it is important to ensure there is no voltage drop in the supply. The unit was installed a distance away from the batteries and the cable size was more than ample to cope with the peak current draw. The voltage drop was sufficient enough to be a cause of concern to the owner.

Solution: An interVOLT SPCi 12-12 VDC 20 Amp Power Conditioner was installed between the supply and load. Even under peak, continuous transmission, the unit maintained a constant and uninterrupted supply of 13.6 VDC to the radio. Signal clipping through power loss was completely eliminated as a result and the radio could operate at peak performance as intended.

For more information on SPCi Power Conditioners:

Compiled and edited by Mike Brand and Terry Bennetts on behalf of Amelec Australia Pty Ltd . E&OE.

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