Fuse Protection of Power Transformers

Bear in mind that the whole UK demand is perhaps 60 gigawatts on on a very busy day, about a kilowatt per person - given how the load is spread out around the country, there are not that many places where concentrating half a gigawatt of transformer makes much sense -  a whole power station is measure in single figures of gigawatts and many are  quite a bit less than that (list of all UK power stations)  -  by comparison a genset is a small thing wheeled out to prop up a region when the power is lost and for some reason cannot be restored quickly.

There is a tendency to call the stuff above 33kV 'transmission' rather than 'distribution' which takes place at at 33k/11k/6k or 230/400v. In some more spread out places like the Scottish Highlands, you will find 33kV coming down to 230/400 directly, but an 11kV tier is far more common.

Transformers of the kind you describe are likely at the ends  of long transmission runs, and are serious national infrastructure projects.  There are a few hundred 132 and 400kV transformers in the whole of the UK  mainly at the tap points on our   High power UK transmission lines

By comparison, the 11kV to 400V star delta distribution transformers are numbered in the tens of thousands per each DNO region.

Bear in mind that the whole UK demand is perhaps 60 gigawatts on on a very busy day, about a kilowatt per person - given how the load is spread out around the country, there are not that many places where concentrating half a gigawatt of transformer makes much sense -  a whole power station is measure in single figures of gigawatts and many are  quite a bit less than that (list of all UK power stations)  -  by comparison a genset is a small thing wheeled out to prop up a region when the power is lost and for some reason cannot be restored quickly.

There is a tendency to call the stuff above 33kV 'transmission' rather than 'distribution' which takes place at at 33k/11k/6k or 230/400v. In some more spread out places like the Scottish Highlands, you will find 33kV coming down to 230/400 directly, but an 11kV tier is far more common.

Transformers of the kind you describe are likely at the ends  of long transmission runs, and are serious national infrastructure projects.  There are a few hundred 132 and 400kV transformers in the whole of the UK  mainly at the tap points on our   High power UK transmission lines

By comparison, the 11kV to 400V star delta distribution transformers are numbered in the tens of thousands per each DNO region.