Paul, my best guess would be that this is either a 10 or 15kV line.
The reason I say this is because the Xformer is an ABB Type 35-10, used ages ago and are quite rare now!.
BTW, the insulators on the line/crossarm contact point and the Primary fuse are a bit too small for my liking.
They also look like they are made of metal?!.
Glad we don't have cross-arms like that over here, us Line Mechanics stand up on them. [Linked Image]