G59 Compliance Test

Today the Manweb G59 compliance witness test was completed to the DNO’s satisfaction, so at long last the turbine is signed off. The relay has been set at 264V maximum which should allow some leeway for voltage spike problems. The DNO have also agreed now that we can set a time interval tolerance of 500 ms (ie the voltage spike will have to last longer than 500 ms before triggering a shut-down). Unfortunately however the relay fitted to the turbine does not have the ability to vary the time delay setting, and is set at zero seconds. But we will try this now and see how we get on. In any event we are still waiting for Manweb to reduce the voltage output from the transformer. That adjustment is still due, but all the engineers have been fully engaged with the extreme cold weather that we have been suffering, so it will be after Christmas now before that is done.