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VICTRON ENERGY ITR040362041, is an isolation transformer that is indispensable in professional marine electrical systems.
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VICTRON ENERGY ITR040362041, is an isolation transformer that is indispensable in professional marine electrical systems. With an isolation transformer, two separate electrical circuits are obtained, the AC systems are galvanically separated between the shore power and the boat. This is important for safety and eliminates the need for galvanic isolators and polarity reversal alarms.
Galvanic corrosion occurs when two different metals are in contact with each other and exposed to an electrically conductive liquid. Seawater and fresh water, albeit to a lesser extent, are such liquids. Generally, the more active (base) metal corrodes while the less active (noble) metal receives cathodic protection. The degree of corrosion depends on several factors such as the ratio between the size of the metal surfaces, the corrosive properties of the liquid and the metals, etc.
It is a misconception that galvanic corrosion only affects metal and aluminum hulls. In fact, it can affect any boat as soon as a metal part (shaft and propeller) comes into contact with water. When the boat is connected to shore power, galvanic corrosion will quickly destroy your sacrificial anodes and corrode the shaft, propeller, and other metal parts in contact with the water. It can therefore be tempting not to connect the ground wire, but this is very dangerous because a residual current device will then not work and a fuse will not trip in the event of a short circuit to the boat's metal parts.
The best solution to avoid galvanic corrosion and at the same time avoid the unsafe situation is to install an isolation transformer to which the shore power is then connected.
Safety and protection against galvanic corrosion
With an isolation transformer, two separate electrical circuits are obtained, the AC systems are galvanically separated between the shore power and the boat. This is important for safety and eliminates the need for galvanic isolators and polarity reversal alarms. We consider safety to be obvious when it comes to common shore installations. In the event of a short circuit, the fuse "blows" and in the event of an earth fault, the residual current device trips. If you connect the shore-side earth wire to the boat's metal parts, you get galvanic corrosion (see below). If you only connect the phase and neutral conductors to the boat's electrical system, you create a dangerous situation because a residual current device will then not work and a fuse will not trip in the event of a short circuit to the boat's metal parts.
Galvanic corrosion occurs when two different metals are in contact with each other and exposed to an electrically conductive liquid. Seawater and fresh water, albeit to a lesser extent, are such liquids. Generally, the more active (base) metal corrodes while the less active (noble) metal receives cathodic protection. The degree of corrosion depends on several factors such as the ratio between the size of the metal surfaces, the corrosive properties of the liquid and the metals, etc.
It is a misconception that galvanic corrosion only affects metal and aluminum hulls. In fact, it can affect any boat as soon as a metal part (shaft and propeller) comes into contact with water. When the boat is connected to shore power, galvanic corrosion will quickly destroy your sacrificial anodes and corrode the shaft, propeller, and other metal parts in contact with the water. It can therefore be tempting not to connect the ground wire, but this is very dangerous because a residual current device will then not work and a fuse will not trip in the event of a short circuit to the boat's metal parts.
The best solution to avoid galvanic corrosion and at the same time avoid the unsafe situation is to install an isolation transformer to which the shore power is then connected. With an isolation transformer, two separate electrical circuits are obtained, the AC systems are galvanically separated between the shore power and the boat. The shore power is connected to the primary side of the transformer and the boat's system to the secondary side. The isolation transformer separates the boat from the shore system's protective earth. By connecting all metal parts to the neutral on the secondary side of the transformer, residual current devices and fuses will trip in the event of a short circuit.
Soft start is standard on Victron Energy isolation transformers. It prevents the transformer's inrush current from tripping the shore fuse.
It is also advisable, for best safety, to connect the neutral of the secondary side to protective earth when the boat is ashore.
3600 Watt Auto 115/230 V
This model automatically switches to 115 V or 230 V, depending on the incoming voltage. Power supply 88 V – 130V: switches to 115 V supply Input 185 – 250 V: switches to 230 V input range. Note: The AC input voltage increases by a ratio of 1:1.05 at the AC output.
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