- New
- Versatile
- ready to use
- 53x39x24mm
- Re-accessible
- For rigid or flexible conductors up to 4 mm2
- Pre-filled with non-toxic gel
- no expiration date
- Small, compact and resistant
New products
Function | Prevents galvanic leakage currents that occur when the boat is connected to the shore via the earth connection. This product is easy to install and complies with CE EN ISO 13297. |
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Max current | 50A |
Dimensions | 220*265*100mm |
Weight | 1.8 kg |
The galvanic isolator isolates your boat from other metal masses that would be naturally connected via the earth cable when your boat is connected to the quay. In particular, this allows your sacrificial anode to be used only for your boat's needs, and prevents premature wear.
In order to comply with the latest EC regulations (in particular EN ISO 13297), boat builders are now required to connect the earth to all the boat's metal grounds, which are also connected to the submerged anodes. This ensures that, in the event of a problem on the AC circuit, the differential circuit breaker will take effect, guaranteeing the safety of users.
However, this creates a new problem, in that via the earth cable, your boat is connected to all other surrounding metal masses (especially those of neighboring boats) via the earth socket.
This creates two main problems:
These currents can more or less rapidly destroy metal equipment below the waterline (your boat acts as an anode for the neighbor's). Zinc anodes help prevent this phenomenon, but they often prove insufficient when boats remain on the pontoon for long periods.
The solution to this problem is to install a galvanic isolator which ensures continuity with the earth necessary for your protection, but avoids continuity with the shore connection to prevent corrosion (prevents leakage currents).
The salt water in which the boat is immersed is a natural conductor of current. Chemically speaking, this means that all immersed parts of the boat are immersed in the same electrolyte (a conductive solution containing ions capable of carrying 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 pile is formed. The less noble metal is oxidized and deteriorates. To prevent this problem, when two dissimilar metals are in contact (bronze propeller and stainless steel propeller shaft, for example), a sacrificial anode is used. The sacrificial anode has a lower oxidation-reduction potential, so it is the anode that deteriorates. If the sacrificial anode is consumed, the two metals forming the part react with each other. In the above case, if only bronze and stainless steel remain, it's the bronze part that will deteriorate.
Note that the oxygenation of the water plays a determining role in the speed of the reaction (boats located near locks or in an area close to a highly oxygenated dam) will have anodes that dissolve more rapidly. It is therefore important to ensure that the anodes are always in good condition.
Galvanic corrosion with surrounding boats: European regulations now require that all metal masses on the boat be earthed to protect users in the event of a 220-volt current leak. Once the boat is connected to the quay, all its metallic grounds are connected to those of other boats or the pontoon. In this context, all anodes in the system are common to all boats. The role of the galvanic isolator is to stop currents between boats, even when the boat is connected to the quay.
Electrolysis: Electrolysis is linked to direct or alternating current leakage, due to an imposed current. In this case, the nobility of the materials is irrelevant, and it's always the positive pole that deteriorates. To prevent this type of problem, a standard electrical installation must be in place on board. A good metal braid connecting all the submerged metal masses on board also helps prevent these risks (provided the potentials of the metals are compatible).
Function | Prevents galvanic leakage currents that occur when the boat is connected to the shore via the earth connection. This product is easy to install and complies with CE EN ISO 13297. |
---|---|
Max. current | 50A |
Dimensions | 220*265*100mm |
Weight | 1.8 kg |
The galvanic isolator isolates your boat from other metal masses that would be naturally connected via the earth cable when your boat is connected to the quay. In particular, this allows your sacrificial anode to be used only for your boat's needs, and prevents premature wear.
In order to comply with the latest EC regulations (in particular EN ISO 13297), boat builders are now required to connect the earth to all the boat's metal grounds, which are also connected to the submerged anodes. This ensures that, in the event of a problem on the AC circuit, the differential circuit breaker will take effect, guaranteeing the safety of users.
However, this creates a new problem, in that via the earth cable, your boat is connected to all other surrounding metal masses (especially those of neighboring boats) via the earth socket.
This creates two main problems:
These currents can more or less rapidly destroy metal equipment below the waterline (your boat acts as an anode for the neighbor's). Zinc anodes help prevent this phenomenon, but they often prove insufficient when boats remain on the pontoon for long periods.
The solution to this problem is to install a galvanic isolator which ensures continuity with the earth necessary for your protection, but avoids continuity with the shore connection to prevent corrosion (prevents leakage currents).
The salt water in which the boat is immersed is a natural conductor of current. Chemically speaking, this means that all immersed parts of the boat are immersed in the same electrolyte (a conductive solution containing ions capable of carrying 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 pile is formed. The less noble metal is oxidized and deteriorates. To prevent this problem, when two dissimilar metals are in contact (bronze propeller and stainless steel propeller shaft, for example), a sacrificial anode is used. The sacrificial anode has a lower oxidation-reduction potential, so it is the anode that deteriorates. If the sacrificial anode is consumed, the two metals forming the part react with each other. In the above case, if only bronze and stainless steel remain, it's the bronze part that will deteriorate.
Note that the oxygenation of the water plays a determining role in the speed of the reaction (boats located near locks or in an area close to a highly oxygenated dam) will have anodes that dissolve more rapidly. It is therefore important to ensure that the anodes are always in good condition.
Galvanic corrosion with surrounding boats: European regulations now require that all metal masses on the boat be earthed to protect users in the event of a 220-volt current leak. Once the boat is connected to the quay, all its metallic grounds are connected to those of other boats or the pontoon. In this context, all anodes in the system are common to all boats. The role of the galvanic isolator is to stop currents between boats, even when the boat is connected to the quay.
Electrolysis: Electrolysis is linked to direct or alternating current leakage, due to an imposed current. In this case, the nobility of the materials is irrelevant, and it's always the positive pole that deteriorates. To prevent this type of problem, a standard electrical installation must be in place on board. A good metal braid connecting all the submerged metal masses on board also helps prevent these risks (provided the potentials of the metals are compatible).