Two DNO 11Kv/400/230v transformers on different HV lines originally supplied two separate buildings on an industrial site. The two separate buildings are now one large steel framed one. So we have two DNO intakes and no clear demarcation within the installation. I remember reading somewhere about issues arising in such situations but cannot find the article. I am keen to establish if any issues are serious enough to seek alternatives. One of the intakes has a Biomass plant feed-in with g59 relay. Both intakes are circa 1MVA.
Thank you gentlemen. The Supply arrangement are existing. Both transformers are dedicated and have no other consumers. The HV arrangements are unknown. They are DNO transformers and supplies are taken at LV and are TNS. I am not really up on G59 but I thought that the relay disconnects the AD plant input at the panel in the plant. If the two supplies were inadvertently interconnected say by a mistake in a simple ring final circuit, it would appear that the busbars intended to be disconnected would be live?
Thank you gentlemen. The Supply arrangement are existing. Both transformers are dedicated and have no other consumers. The HV arrangements are unknown. They are DNO transformers and supplies are taken at LV and are TNS. I am not really up on G59 but I thought that the relay disconnects the AD plant input at the panel in the plant. If the two supplies were inadvertently interconnected say by a mistake in a simple ring final circuit, it would appear that the busbars intended to be disconnected would be live?
