G59/2 Testing
We undertake G59 witness testing and commissioning with DNO (Distribution Network Operator) presence for G59 relay and system approval across the whole UK. These tests are applicable to PV (photovoltaic) solar panel installations, wind power installations and CHP (combined heat and power) installations greater than 50kW 3-phase (16A per phase).
Through our affiliated manufacturing and installation companies we can provide G59/2 relays and control panel solutions.
We issue tailored result sheets signed by our test engineers and the DNO protection engineer representative which consist of all parameters required by the DNO according to Engineering Recommendation G59/2. These sheets represent the recordable test data required by the DNO to enable connection.
The testing parameters we follow according to the Engineering Recommendation G59/2 include 2-stage over/under voltage, 2-stage over/under frequency, vector shift or ROCOF (rate of change of frequency), LOS (loss of mains) and control supply failure. Our chosen test equipment is widely recognised in the field and helps promote confidence for the client and DNO protection engineer.
We also offer a pre-commissioning service where we can assess the operation of the G59 panel interface with the dual energy system prior to the DNO witness test visit.
Please contact us to discuss your particular requirements.
