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Lida® Wire Anodes

Lida® Wire Anodes

Mixed Metal Oxide (MMO) Coating With A Low Consumption Rate

LIDA® wire anodes are 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. They are manufactured in two diameters, 1.5 millimeter and 3.0 millimeter.
Cross-Section Showing the Construction of Wire Anode
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.
The low consumption rate of the mixed metal oxide coating at the recommended operating current densities result in projected anode lifetimes from 15 to 20 years. Longer or shorter lifetimes may be obtained by varying the current output per foot per wire.

Anode Coating

The coating used on the wire is suitable for most cathodic protection applications, but output varies with application. LIDA® mixed metal oxide coating demonstrates a very high chemical stability, even in environments with very low pH values. Unlike other impressed current anodes, the LIDA® coating is not affected by the generation of chlorine.
Wire Anodes laying on the ground

Lead Wire Connection

A typical connection between the LIDA® wire anode and a header cable has been used successfully in canistered anodes since 1987.

Wire Anode Applications

  • Canistered Anodes
  • Continuous Horizontal Groundbeds
  • Discontinuous Horizontal Groundbeds
  • Shallow Vertical Groundbeds
  • Deep Anode Groundbeds
  • Above Ground Storage Tanks
  • Underground Storage Tanks
  • Natural Water
  • Electrical Cable Shielding
  • Water Storage Tanks
  • Water Treatment Equipment

Wire Anode Sizes:

Wire Size mm
1.5
3.0
Electrical RES.ohm/m@25°C
0.0174
0.003
Electrical RES.ohm/m@70°C
0.0204
0.0035
Max. Wire Amperage @25°C, Amps
21
36
Max. Wire Amperage @70°C, Amps
7
12

Dimensions:

Nom-Wire Size
mm
1.5
3.0
inches
0.062
0.118
Diameter Tolerance
mm
+0.15 -0.0
+0.28 -0.00
inches
+0.007 -0.0000
0.010 -0.000
Titanium
% By Wt
36.1
17.1
% By Vol
52.7
29.0
Active Surface Area
ft2/ft of Length
0.017
0.033
m2/m of Length
5.1E-03
1.0E-02
Weight
lbs/ft
0.009
0.042
g/m
13.7
62.5
Nom-Wire Size
Diameter Tolerance
Titanium
Active Surface Area
Weight
mm
inches
mm
inches
% By Wt
% By Vol
ft2/ft of Length
m2/m of Length
lbs/ft
g/m
1.5
0.062
+0.15 -0.0
+0.007 -0.0000
36.1
52.7
0.017
5.1E-03
0.009
13.7
3.0
0.118
+0.28 -0.00
0.010 -0.000
17.1
29.0
0.033
1.0E-02
0.042
62.5

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 thewire effects the resistance. The table below, shows this effect by assuming the wire will operate at the temperature of the surrounding electrolyte. The change in resistivity also changes the maximum ampacity of the wire.

Maximum Current for Various LIDA® Wire Anodes (life in years)

Diagram of header cable connection to wire anode
Maximum wire length vs electrolyte resistivity for various percent voltage
Maximum wire length vs electrolyte resistivity for various percent voltage
Electrical resistance of elgard anode wire vs temperature

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.

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.

⇒Download a product brochure here: LIDA® Wire Anodes

All De Nora Lida® Anodes

Disk Anode on the GroundDisk Anode on the Ground
Lida® Disk Anodes
Dam and Navigation Lock Gates
Marine Structures, Water Tanks, Vessels
Fresh, Brackish and Seawater Environments
Titanium Disk with MMO Coating
Construction of an underground pipelineConstruction of an underground pipeline
Lida® One Anodes
Cathodic Protection of Buried Structures
Varying Soil Resistivities
Carbonaceous Backfill
Titanium Tube with MMO Coating
LIDA® rod anodes comprised of a titanium substrate with a mixed metal oxide coatingLIDA® rod anodes comprised of a titanium substrate with a mixed metal oxide coating
Lida® Rod Anodes
Process Vessels, Water Condensor Boxes, Heat Exchangers, Water Intake Structures
Constant Electrical Resistance over time
Fresh Water, Brackish Water, Seawater, Coke or Sand Environments
High Current Density Capacity
Offshore StructureOffshore Structure
Lida® TSA™ Anodes
Deep Water Applications
Easy Installation
close-up of wire anodesclose-up of wire anodes
Lida® Wire Anodes
Canistered Anodes, Groundbeds, Storage Tanks, Cable Shielding, Water Treatment Equipment
Not Affected by Chlorine Generation
High Chemical Stability
denora-bluedenora-blue
De Nora Lida® Anodes
Titanium Base with MMO Coating
High Chemical Stability, even in low pH Environments
Chlorine-Resistant Wire Lead

Lida® Wire Anodes

Wire Anodes laying on the ground
Clear

Required Information for RFQ:

Additional information

LIDA® Wire Anode Diameter

1.5 mm LIDA® Wire Anode, 3.0 mm LIDA® Wire Anode

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Additional information

LIDA® Wire Anode Diameter

1.5 mm LIDA® Wire Anode, 3.0 mm LIDA® Wire Anode

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