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| Function | Prevents galvanic leakage currents that occur at dockside when the boat is connected via the earth connection. In the event of a fault in the on-board circuit, the ground connection continues to ensure its effect for the protection of users, this product is very easy to install and complies with the CE EN ISO 13297 standard |
|---|---|
| Max. Intensity | 50A |
| Dimensions | 220*165*100mm |
| Weight | 1.8 kg |
The galvanic isolator allows you to isolate your boat from other metal masses that would naturally be connected via the ground cable when your boat is connected to the dock. This allows your sacrificial anode in particular to be consumed only for the needs of your boat and prevents its premature wear and tear.
In order to comply with the latest EC regulations (in particular EN ISO 13297), boat builders must now connect the ground to all metal masses of the boat, which is also connected to the submerged anodes. This ensures that in the event of a problem on the alternating circuit, the differential circuit breaker will operate and guarantee the safety of users.
However, this creates a new problem, as via the ground cable, your boat is connected to all other surrounding metal masses (especially those of neighbouring boats) via the ground connection.
This creates two main problems:
These currents can destroy metal equipment below the waterline more or less quickly (your boat acts as an anode for the neighbour). Zinc anodes prevent this phenomenon, but they are often insufficient when boats stay on the pontoon for a long time.
The solution to this problem is to install a galvanic isolator that ensures continuity with the ground necessary for your protection but avoids continuity with the shore power to avoid corrosion (prevents leakage currents).
The salt water in which the boat is immersed is naturally current conductive. At the chemical level All the submerged parts of the boat are therefore immersed in the same electrolyte (conductive solution containing ions that can carry the current).
The most common phenomenon is galvanic corrosion, which occurs naturally within the boat: When two metals are in contact and immersed in an electrolyte, a chemical battery is formed. The least noble metal is oxidized and deteriorates. In order to prevent this problem when two metals of different nature are in contact (bronze propeller and stainless steel propeller shaft for example), a sacrificial anode is installed, this one having a lower oxidation reduction potential, it is it that deteriorates. If it is consumed, the two metals forming the part react with each other. In the above case, if only bronze and stainless steel are left, the bronze part will deteriorate.
It should be noted that the oxygenation of the water has a decisive role in the speed of the reaction (boats located near locks or in an area near a highly oxygenated dam) will have anodes that dissolve more quickly. It is therefore necessary to ensure that the anodes are always in good condition.
Galvanic corrosion with the surrounding boats: European regulations now require that all metal masses of the boat be connected to earth to ensure the protection of users in the event of a 220 Volt power leak. Once the boat is connected to the dock, all the metal masses of the boat are connected to those of the other boats or the pontoon. In this context, all the anodes of the system are common to all boats. The role of the galvanic isolator is to stop the currents between the boats, even when the boat is connected to the dock.
Electrolysis: Electrolysis is linked to leaks of direct or alternating current, it is due to an imposed current. In this case, the nobility of the materials is not taken into account and it is always the positive pole that deteriorates. In order to prevent this type of problem, an electrical installation to the standards must be in place on board. The fact of having a good metal braid connecting all the immersed metal masses on the edge also prevents these risks (provided that the potentials of the metals are compatible).
| Function | Prevents galvanic leakage currents that occur at dockside when the boat is connected via the earth connection. In the event of a fault in the on-board circuit, the ground connection continues to ensure its effect for the protection of users, this product is very easy to install and complies with the CE EN ISO 13297 standard |
|---|---|
| Max. Intensity | 50A |
| Dimensions | 220*165*100mm |
| Weight | 1.8 kg |
The galvanic isolator allows you to isolate your boat from other metal masses that would naturally be connected via the ground cable when your boat is connected to the dock. This allows your sacrificial anode in particular to be consumed only for the needs of your boat and prevents its premature wear and tear.
In order to comply with the latest EC regulations (in particular EN ISO 13297), boat builders must now connect the ground to all metal masses of the boat, which is also connected to the submerged anodes. This ensures that in the event of a problem on the alternating circuit, the differential circuit breaker will operate and guarantee the safety of users.
However, this creates a new problem, as via the ground cable, your boat is connected to all other surrounding metal masses (especially those of neighbouring boats) via the ground connection.
This creates two main problems:
These currents can destroy metal equipment below the waterline more or less quickly (your boat acts as an anode for the neighbour). Zinc anodes prevent this phenomenon, but they are often insufficient when boats stay on the pontoon for a long time.
The solution to this problem is to install a galvanic isolator that ensures continuity with the ground necessary for your protection but avoids continuity with the shore power to avoid corrosion (prevents leakage currents).
The salt water in which the boat is immersed is naturally current conductive. At the chemical level All the submerged parts of the boat are therefore immersed in the same electrolyte (conductive solution containing ions that can carry the current).
The most common phenomenon is galvanic corrosion, which occurs naturally within the boat: When two metals are in contact and immersed in an electrolyte, a chemical battery is formed. The least noble metal is oxidized and deteriorates. In order to prevent this problem when two metals of different nature are in contact (bronze propeller and stainless steel propeller shaft for example), a sacrificial anode is installed, this one having a lower oxidation reduction potential, it is it that deteriorates. If it is consumed, the two metals forming the part react with each other. In the above case, if only bronze and stainless steel are left, the bronze part will deteriorate.
It should be noted that the oxygenation of the water has a decisive role in the speed of the reaction (boats located near locks or in an area near a highly oxygenated dam) will have anodes that dissolve more quickly. It is therefore necessary to ensure that the anodes are always in good condition.
Galvanic corrosion with the surrounding boats: European regulations now require that all metal masses of the boat be connected to earth to ensure the protection of users in the event of a 220 Volt power leak. Once the boat is connected to the dock, all the metal masses of the boat are connected to those of the other boats or the pontoon. In this context, all the anodes of the system are common to all boats. The role of the galvanic isolator is to stop the currents between the boats, even when the boat is connected to the dock.
Electrolysis: Electrolysis is linked to leaks of direct or alternating current, it is due to an imposed current. In this case, the nobility of the materials is not taken into account and it is always the positive pole that deteriorates. In order to prevent this type of problem, an electrical installation to the standards must be in place on board. The fact of having a good metal braid connecting all the immersed metal masses on the edge also prevents these risks (provided that the potentials of the metals are compatible).
