The correct specification of the earthing system for a high voltage electrical installation is critical for its safe functioning. An optimum specification can both demonstrate compliance with national/ international safety standards, and minimise the cost of buried electrode. Gridconnect uses CDEGS, Safegrid and CYMGRD software packages for designing earthing systems in compliance with IEEE or ENA standards.


  • Harmonics studies in compliance with IEC and ENA ER G5/4 (Digsilent software)
  • Dynamic modelling, Fault Ride Through (FRT) studies (Digsilent software)
  • Load flow analysis (IPSA power)
  • P28 and P29 compliance analysis

Protection Co-ordination (Grading) Studies (Amtech Software) -Fault Level Analysis (Amtech and IPSA Software) -Lightning Protection Studies -Arc Flash Studies -HV Switchgear Design and Specification -Insulation Co-ordination Studies -HV Cable Sizing and Losses Optimisation (GridCableMax Software)

During planning stage, we ensure the project design meets the development objectives and is carried out to the required standards. We have developed highly customised substation designs offering clients bespoke solutions for projects up to 400kV.