In my experience fuses we(a)re common up to 1MVA on DNO networks. Ring Main Units generally had a trip bar arrangement to disconnect all three phases on the first fuse operation. Overhead network tended to use either oil filled or drop out fuses but generally for smaller (pole mounted) transformers.
Few if any transformers fed through fuses either above 11kV or 1MVA on GB networks.
VTs for protection / metering also tend to be fuse protected but these are small VA rating.
In my experience fuses we(a)re common up to 1MVA on DNO networks. Ring Main Units generally had a trip bar arrangement to disconnect all three phases on the first fuse operation. Overhead network tended to use either oil filled or drop out fuses but generally for smaller (pole mounted) transformers.
Few if any transformers fed through fuses either above 11kV or 1MVA on GB networks.
VTs for protection / metering also tend to be fuse protected but these are small VA rating.
