Originally Posted by interested

I don't think it will work as intended. The manual of Saferide pedelec version says:
"The system battery needs to be able to deliver minimal: 6V/1.3A (7,8W) or 12V/0,55A (6,6W) or 24V/0,25A (6W) or 36V/0,17A (5,9W)"

That is a tall order for a 3W dynamo hub to deliver considering that this is the _minimum_ requirements.
I also have a hard time believing that anybody actually install the "SM-DH10" over-voltage protector these days. It is a leftover from ancient time when halogen bulbs were still used. So I think it was tested without it, and of course, found too dim for any practical use.