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G59 Relay Test Equipment Hire

Hire G59/3 Compatible Relay Test Sets from Sunbelt Rentals. G59 is the regulation covering the connection of any type of generator device to run in parallel or in sync with the National Grid.  


The G59 mains protection relay device looks at the stability and quality of mains' electricity. It is programmed to strict parameters dictated by the DNO, typically including voltage, frequency, ROCOF (rate of change), phase angle etc. If the parameters are breached then the relay will cause a protective device, such as an MCCB or other circuit breaker to open, instantly disconnecting the generator from the grid. 

  • Variety of test instruments suitable for G59 Protective Relay Testing, from manufacturers such as EuroSMC, Omicron, T&R and Ponovo.