Earth Potential Rise (EPR) Data for Grid and Primary Sites

Introduction The earth potential rise (EPR) dataset includes the fault current, ground return current, EPR and site classification at various voltages (132kV, 66kV, 33kV, 25kV, 20kV, 11kV, 6.6kV) for all Grid and Primary substations. This data can be used in substation earthing system design and assessment. For further information on earthing refer to UK Power Networks' earthing standard EDS 06-0001 available from our website g81.ukpowernetworks.co.uk/ .

Please send any enquiries related to the dataset to earthingenquiries@ukpowernetworks.co.uk. Methodological Approach EPR data is uploaded from UK Power Networks' data warehouse. Site Functional Locations (FLOCs) are used to associate EPR data to UK Power Networks Grid and Primary Sites Quality Control Statement Quality Control Measures include: Verification steps to match features only with confirmed functional locations.