We supply comprehensive packages to establish electrical and thermal sub-soil characteristics for electricity pylon, wind turbine and cable route constriction including the design of electrical grounding systems.

Electrical Resistivity Testing:

• Lightning strikes can cause serious damage to electrical pylons and wind turbines.
• Earthing to protect against dangerous “touch potentials” depends on the conductivity of the native soil and rock.
• At the design stage it is essential to understand the earthing characteristics of the native soil and geology at pylon, sub station and turbine locations.
• Electrical Resistivity testing is used to gain accurate conductivity data, which can then be used to produce a ground resistivity model. Using this model cost effective electrode installation can be designed. Resistivity testing can often provide a 50% saving on standard practices.

Thermal Resistivity Testing:

• Will the native soils efficiently dissipate heat from your specified cable?
• In order for cables to function efficiently they must be able to dissipate heat. Heavy clay and / or arid conditions increase the thermal resistivity of the ground.
• In the worst cases this produces Thermal Runaway and can result in cable failure.
• Use of Thermal Resistivity Testing of the native soil enables an accurate calculation of the ground’s thermal resistivity from which a suitable cable can be specified.