LIDA® Wire Anodes
LIDA® Wire Anodes
LIDA® wire anodes are copper cored titanium wire with a mixed metal oxide coating. The mixed metal oxide is a crystalline, electrically-conductive coating that activates the titanium and enables it to function as an anode.
LIDA® wire anodes are manufactured in two diameters, 1.5 millimeter and 3.0 millimeter.
When applied on titanium, the coating has an extremely low consumption rate measured in terms of milligrams per year. As a result of this low consumption rate, the wire diameter remains nearly constant during the life of the anode.LIDA® Wire Anode Applications
- Canistered Anodes
- Continuous Horizontal Groundbeds
- Discontinuous Horizontal Groundbeds
- Shallow Vertical Groundbeds
- Above Ground Storage Tanks
- Underground Storage Tanks
- Natural Water
- Electrical Cable Shielding
- Water Storage Tanks
- Water Treatment Equipment
LIDA® Wire Anode Flexibility of Use
LIDA® wire anodes can be used in a wide variety of cathodic protection applications. Their lightweight and malleability allow forming to complex configurations. The copper core provides high conductivity resulting in better current distribution along the entire length of the wire.
LIDA® Wire Anode Savings
In many cases, LIDA® mixed metal oxide wire anodes offer savings over competitive anodes on an installed cost basis. This is possible by balancing the high current density capability of mixed metal oxide coatings and the ability to tailor to desired lifetimes.
LIDA® Wire Anode Coating
The coating used on wire is suitable for most cathodic protection applications, but output varies with application.
LIDA®'s mixed metal oxide coating demonstrates a very high chemical stability, even in environments with low pH values.
Unlike other impressed current anodes, the LIDA® coating is not affected by the generation of chlorine.LIDA® Wire Anode Features
- High Current Output
- Low Coating Wear Rate
- Highly Conductive Copper Core
- ANSI/AWWA Standard D 104-91
- Lower Cost Per Ampere Year
- Constant Electrical Resistance
- Minimizes voltage drop
LIDA® wire anodes are lightweight, rugged, and flexible.
LIDA® wire anodes have been used successfully in canistered form since 1987 and in tank bottom protection systems since 1990.
In choosing LIDA® wire anodes, you have selected the most durable and reliable material from the originator of the mixed metal oxide anode.
|Titanium||Copper||Active Surface Area||weight|
ft. of length
m of length
|Wire Size (mm)||1.5||3.0|
|Electrical Resistivity (ohm/m at 25° C||0.0188||0.0034|
|Electrical Resistivity (ohm/m at 705° C||0.0221||0.0040|
|Maximum Wire amperage at 70° C||21||36|
|Maximum Wire amperage at 25° C||7||12|
Resistivity Versus Length
Proper current distribution is an important factor in the design and proper use of an anode wire for each application. For example, if a wire voltage drop of 10% or less is desired for proper current distribution in 1000 ohm-cm water, anode segments of 45 feet should not be exceeded between electrical connections to a header cable with the 1.5 mm diameter wire. By comparison,use of the 3.0 mm diameter wire will permit the use of 110-foot segments, while still allowing the desired 10% voltage drop.
As with all electrical conductors, the operating temperature of the wire affects the resistance. The change in resistivity also changes the maximum ampacity of the wire.
A typical connection between the De Nora wire anode and a header cable is shown below. Connections
such as this have been used successfully in canistered anodes since 1987.