DC0079 OFGEM Approval PDF
This attached PDF contains the recent modifications made to the Distribution Code, and Engineering Recommendation G59 are in relation to ensure that all existing embedded generators make changes to comply with the following:
That where rate of change of frequency (RoCoF) protection relays are used, as part of Loss of Mains protection, the applied setting should be 1Hzs-1 with a definite time delay of 500ms.
That vector shift protection technique should be removed where it is in use as Loss of Mains protection.
That existing Loss of Mains protection settings for type-tested generators need not be changed.
Any existing over-frequency setting relays still set at 50.5Hz should if possible be reset to 52.0Hz.
To download the PDF document, please click DC0079 OFGEM
We are now well through the process of implementation for Window 1 in the DC0079
This attached PDF contains the recent modifications made to the Distribution Code, and Engineering
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