What is a galvanic isolator and why should my shore power system have one?
Posted by Liam Kennedy on 1/21/2019 to
Corrosion
A galvanic isolator is a device used to block low voltage DC currents coming on board your boat on the shore power ground wire. These currents could cause corrosion to your underwater metals; through hulls, propeller, shaft etc.
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How to test a galvanic isolator that doesn't have a monitoring system
Posted by Liam Kennedy on 1/21/2019 to
Corrosion
Galvanic isolators are a bit difficult to test. Current ABYC standards require that galvanic isolators be self testing. For testing older isolators without this feature there are a number of methods that can be used, the one that follows is one that I found most useful.
Isolation Transformer or Galvanic Isolator - which is preferable?
Posted by Peter Kennedy on 10/24/2014 to
Corrosion
A discussion on the relative merits of transformers and galvanic isolators