Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1996-11-12
1998-11-24
Tung, T.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
114270, 204197, 205724, 205740, 307 95, C23F 1300
Patent
active
058401644
ABSTRACT:
A galvanic isolator to protect against galvanic corrosion of a submersible metal marine drive. The galvanic isolator is positioned between shore ground and boat ground to prevent the flow of destructive galvanic currents between the shore ground and the boat ground, while maintaining the safety function of neutral ground. The galvanic isolator of the invention includes a blocking element positioned between the boat ground and the shore ground that can be switched between an open and a closed state by a trigger circuit. The trigger circuit closes the blocking element when the voltage difference between the boat ground and the shore ground exceeds a threshold value, such as 1.4 volts. During operation of the galvanic isolator during the high fault current situation, power is dissipated only by the blocking element, rather than by the combination of the blocking element and the trigger device. In this manner, the galvanic isolator reduces the amount of power dissipated during high current conditions and therefore reduces the amount of heat generated by the galvanic isolator.
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"Everything You Need to Know About Propellers", pp. 51-52, 4th Ed. Brunswick Corp., P/N 90-861244-92. date unavailable.
Brunswick Corporation
Tung T.
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