Drop-Out Fuse and Fuse Link

http://www.engineering.schneider-electric.se/attachments/ed/guide/mv_partner_b33__selection_of_fuses_for_protection_of_transformers.pdf

https://en.wikipedia.org/wiki/Fuse_cutout

100 divided by 11 was about 9.1 when I went to school.

What am I missing or don't understand?

its a three phase 50 Hz transformer.

÷ √3 ?

There is NO WAY anyone is getting a license for 100kVA phase imbalance in the three phase grid

A fuse is there to protect the CABLE. So, as the wiring installation detail has been withheld from the forum it would be unreasonable to expect a valid answer from it!

And it does protect cable by providing for interruption when the transformer attached downstream (these should usually be found on the service pole, correct?) will have a current such the range {I_rf, I₃} values (the in-rush and fault currents) will include the rated value of the fuse. If the fuse is outside these limits (usually I₃ is about 3-6 times the in-rush) then it will be inappropriate for use, as the established arc upon failure may be able to sustain itself for an undue (indefinite) period of time.

It is a mystery to this reader why anyone would intentionally install a fuse assembly that is capable, on rupture, of producing a self-sustaining arc, and therefore a potential learning exercise therefrom.

We are speaking of those special life-learning moments when we see Jesus face-to-face, quite right?