Earthing Design Services

Earthing Design by a professional expert is best to ensure the earthing system is appropriate for the installation.

GT Electrical ComServ Limited have extensive knowledge and experience in specialist earthing. We offer earthing solutions, ranging from a ground based soil resistivity survey (to assist with the initial design process), through to installation.

We assist in all aspects of electrical designs from liability studies of network capacity, to small substation design & build, with detailed design and installation of 132kV primary substations.

When designing a suitable earthing system we acquire the following minimum information:

• Soil Resistivity
• Expected Fault Current
• Fault Current Characteristics
•  Fault Current Duration

For complex installations more information will be required.

GT Electrical ComServ Limited’s experienced electrical design engineers are able to assist you with general network studies as well as technical protection designs and earthing system designs.

Our Earthing System Design Services Includes:

• Complete Earthing Design Service
• Primary site investigations and studies of existing earthing systems
• Substation Earthing, site testing and site surveys
• Testing and commissioning of existing systems
• System alterations and maintenance

Inadequately designed earthing systems can cause the following problems:

Step Potential
Where there is a possible difference that develops across the feet of a person standing near to a buried earthing system. That may cause a very harmful current to flow through the body.

Transfer Potential
The ability of a potential voltage to induce a current into any metallic object buried near an earthing system.

Touch Potential
The potential situation that develops when a person touches a metal object connected to a nearby earthing system. This may cause a very harmful current to flow through the body.

Effective and suitable Earthing design is very cruicial to ensure effective performance and to avoid any negative impact on the security of electricity supplies and power quality. Failure to implement a suitable earthing design can lead to unnecessary incurred costs from addressing earthing problems and could also cause a threat to potential safety.

GT Electrical ComServ Limited’s services are extensively experienced and qualified in delivering cost effective, high performance and safe Earthing solutions. We develop Earthing solutions align with the following stringent legislation, codes of practice and guidelines:

• ENA S34 – A Guide for Measuring the Rise of Earth Potential at Substation Sites.

• IEEE Std 80:2000 IEEE Guide is for safety in AC substation grounding

• BS 7430:2015 Code of practice for the defensive earthing of electrical installations

• ENA TS 41-24 Guideline is for the design, installation, testing and maintenance of main earthing systems in substations

• BSEN 50522:2010 Earthing of power installation overpowering 1 KV a.c.

For more information give us a call.