DeNora Wire Anodes

DeNora Wire Anodes - Houston

LIDA® Wire Anodes are designed for application in:

  • 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

Anodes

ELTECH 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.

ELTECH 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.

Anode Coating

The coating used on wire is suitable for most cathodic protection applications, but output varies with application.

ELTECH's mixed metal oxide coating demonstrates a very high chemical stability, even in environments with low pH values.

Unlike other impressed current anodes, the ELTECH coating is not affected by the generation of chlorine.

Features

  • High Current Output
  • Low Coating Wear Rate
  • Highly Conductive Copper Core
  • ANSI/AWWA Standard D 104-91

Benefits

  • Lower cost per ampere year
  • Constant electrical resistance
  • Minimizes voltage drop

Reliability

ELTECH wire anodes are coated in the United States. They are lightweight, rugged, and flexible.

ELTECH wire anodes have been used successfully in canistered form since 1987 and in tank bottom protection systems since 1990.

In choosing ELTECH wire anodes, you have selected the most durable and reliable material from the originator of the mixed metal oxide anode.

Savings

In many cases, ELTECH 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

ELTECH 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.

Quality Assurance

From the application of the coating to the spooling of the wire, ELTECH's attention to quality sets it apart.

The coating undergoes stringent quality control examination by SEP, X-ray and adhesion test methods throughout the coating process to assure proper thickness and application.

Our personal attention to each detail of the quality control process assures you a superior, reliable product.

Order Information

ELTECH wire anodes are available from selected leading full-service cathodic protection firms.

When ordering ELTECH wire anodes, please specify both wire diameter and wire length.

Except by special order, the maximum single piece length is 1,000 feet.

Wire Anode Dimensions
Anode Nom-Wire Size Diameter Tolerance Titanium Copper Active Surface Area Weight
mm inches % by Wt. % by Vol. % by Wt. % by Vol. ft²/ft of length m²/m of length lbs/ft g/m
1.5 +0.15
-0.00
+0.007
-0.000
31 47 69 53 0.0155 0.0047 0.008 12.2
3.0 +0.28
-0.00
+0.010
-0.000
15 25 85 75 0.0309 0.0094 0.037 66.4
Electrical Properties Of Wire Anode
Wire Size (mm) 1.5 3.0
Electrical Resistivity (ohm/m at 25¡ C) 0.0188 0.0034
Electrical Resistivity (ohm/m at 70¡ C) 0.0221 0.0040
Maximum Wire amperage at 25¡ C 21 36
Maximum Wire amperage at 70¡ C 7 12

Resistivity Versus Length

Proper current distribution is an important factor in the design and proper use of an anode wore for each application. The graphs of Electrolyte Resistivity versus Maximum Wire Length are shown for selected voltage drops down the line. The voltage drop values represent the percentage decrease in actual driving voltage for the beginning to the end of a particular anode system.

For example. if a wire voltage drop of 10% or less is desired for proper current distribution in 1000 ohm-cm water, anode segments 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 effects the resistance. The change in resistivity also changes the maximum ampacity of the wire.



Typical Connection: ELTECH wire anode and a Header Cable

Connections such as this have been used successfully in canistered anodes since 1987.

Regardless of the type of impressed current anode used, proper ground bed design is paramount to optimum, low resistance performance. ELTECH Corporation recommends the use of quality, conductive, carbonaceous backfill, a vent pipe, and centralizers, suitable cable, and good design practices and understanding.

Maximum Rated Current Output As A Function Of Design Lifetime