Electrical Separation

An isolation transformer physically and electrically separates the primary and secondary windings. Power is transferred via a changing magnetic field, which links the two windings without a direct metallic connection. This ensures there is no electrical continuity between the shore power and the boat’s electrical system, preventing stray currents.

Protection for Your Boat

On a narrowboat or widebeam, a Victron isolation transformer is crucial. It prevents galvanic corrosion, which happens when stray DC currents from shore power use the boat’s hull as a conductor, rapidly degrading underwater metals like the hull, propeller, and sacrificial anodes. It also protects against electric shocks.

Isolation vs. Galvanic Isolator

Galvanic isolators are installed on the green safety ground wire of a boat’s shore power connection. They contain diodes that act like one-way check valves for electricity and offer only limited protection. An isolation transformer, as the name suggests, offers complete galvanic isolation by using a magnetic field to transfer power, completely separating the boat’s electrical system from the shore power. This not only prevents all stray currents but also protects against dangerous polarity issues and electrical shocks.

Benefits of Victron

Victron transformers offer additional features. The soft-start circuitry prevents the shore power fuse from blowing from the inrush current. They can also automatically adapt to different input voltages (115V or 230V), providing a stable output and ensuring safe operation worldwide.

A Complete Solution

Ultimately, the Victron isolation transformer provides a complete, robust solution for a boat’s electrical safety. It ensures the integrity of the boat’s metalwork, protects sensitive on-board electronics, and, most importantly, provides a superior level of safety for anyone on board or in the water.