Ⅰ Foreword
   XCD series of low-resistance earth module, a kind of earth electrode mainly made of non-metallic materials, consists of nonmetallic minerals with excellent electrical conductivity and stability as well as ionogens. Its birth creates the epoch of earth material and technology.

Ⅱ Product Introduction
   Traditional earth electrodes are mainly metallic conductors such as round steel, angle iron, steel tube, bar copper, copper wire mesh and so on. Characterized by more material consumptions, large capital outlay, short life and bad stability, they are not suitable to be used in areas with high soil resistivity. While this kind of low-resistance earth module is little in material consumption, saving in capital outlay, long in life and strong in stability, thus is especially suitable to be used in areas with high soil resistivity. If it is sandstone stratum or rock stratum around earth point, it can be used to form special “artificial earth” to solve problems met in earth engineering, besides, the product is pollution free, nontoxic, corrosion resistant and very convenient in application.
   The basic reason why the product can achieve low earth resistance is that under condition with same overall dimension, more-metallic materials increase the contact area between earth electrode and soil layer by times, and then increase loose driving area of earth electrode self, and reduce contact resistance between earth electrode and soil accordingly.
   Having very strong water absorbability and keeping, the product can fully bring electric conduction of ionogen in earth module into play.

Ⅲ Operating Principle
   When XCD earth module built-in zinc plated flat steel or angle iron is connected with the protected ground wire, effective contact area of metal earth electrode and ground will increase greatly. Moreover, owing to the moisture absorption and keeping and stable electric conduction of earth module, earth resistance of metal earth electrode and the ground will minish greatly, and then resistance-reducing effect of the module will be fully brought into play accordingly.

Ⅳ Application Range

  The product widely applies to various engineering of working earthing and protective earthing, such as:

  Power Supply System: earthing engineering of power plant, transformer substation and station and transmission line, etc.
  Communication System: earthing engineering of various communication stations and towers, SPC exchange and cable television network.
  Construction System: lightning earthing engineering of various hotels, restaurants, high-rise and antique buildings.
  Medical Treatment and Scientific Research: earthing of various precise medical equipments and instruments for scientific research.
  Military Facility: earthing engineering of military communication, radar and other facilities.
  Working earthing of other industries and antistatic earthing of flammable and explosive places and equipments, etc

Ⅴ Performance Characteristics:
◆ Adopting nonmetallic conducting material with strong stability as conducting medium, electrical conductivity of the product won't be effect by season and environment.
◆ Characteristic of moisture absorption and keeping of the product can keep the effective contact with soil.
◆ In area with high soil resistivity, it can effectively reduce the earth resistance of earth facility.
◆ It is shock and dash current resistant, and stable in resistance.
◆ In addition to being environmental-friendly, corrosion resistant, nontoxic and tasteless, it is also characterized by long service life and convenient installation and application.
◆ Reduce engineering cost and save capital.

Ⅵ Technical Indexes
Model: XCD-01 (see picture 1)
◆ Overall dimension: 500×400×60mm
◆ Weight: 22-24kg
◆ Resistivity under room temperature: ≤3Ωm
◆ Power frequency earth resistance: 7Ω
Model: XCD-02 (see picture 2)
◆ Overall dimension: φ150×1000mm
◆ Weight: 33-35kg
◆ Resistivity under room temperature: ≤2.2Ωm
◆ Power frequency earth resistance: 5.6Ω