De or het takelinstallatie?

The correct Dutch article is:

de takelinstallatie

Rule Words ending in -tie and -sie: almost always de. See the rule

How to use takelinstallatie

the takelinstallatiede takelinstallatie
this takelinstallatiedeze takelinstallatie
that takelinstallatiedie takelinstallatie
our takelinstallatieonze takelinstallatie
your takelinstallatiejouw takelinstallatie
every takelinstallatieelke takelinstallatie
which takelinstallatie?welke takelinstallatie?
a big takelinstallatie / the big takelinstallatieeen grote takelinstallatie, de grote takelinstallatie