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G59/G10 Injection Testing


In order for the generator to run in parallel with, or synchronised to, the electricity grid, certain regulations must be adhered to.

Commonly known in the UK as G59, and as G10 injection testing in the Republic of Ireland, these regulations apply to power plants and generators used for standby and peak lopping application, or grid parallel use.

G59/G10 testing assesses the performance of the mains protection relay that sits between the generator and the electricity grid. It’s not a test of the generator itself. The relay’s purpose is to disconnect or “decouple” the generator from the electricity grid if it detects instability on either side of the connection.

Edina has fully trained engineers capable of carrying out G59/G10 Injection testing to comply with the local Distribution Network Operator (DNO) requirements.


For more information about our G59/G10 Injection Testing service, or to discuss your diesel service requirements, please contact us by email using the enquiry form below (subject field ‘Diesel Service Enquiry’) or call us at:

Edina Lisburn
T: +44 (0)28 9262 0288

Edina Dublin
T: +353 (0)1882 4832