I'd like to propose that abbreviations require word boundaries (\b) when segmenting files.
So, if hou have defined
as an abbreviation, then:
Die el. Anlage wird aktiviert.
won't be segmented after the 'el.', but:
ein wirksames Mittel. Daher kann man ...
will be segmented after the full stop.
As a workaround you can insert a space before the abbreviation, but this won't help you at the start of segments or in table cells, etc.