ZW32-12 mtundu wa VCB wakunja, ndi woyenera makina amphamvu a magawo atatu okhala ndi AC 50HZ, voltage 10-12KV, amagwiritsidwa ntchito ngati kuswa, kutseka mphamvu yamagetsi. Ili ndi ntchito yoteteza kupitirira muyeso komanso kufupika kwa magetsi, imatha kukwaniritsa zofunikira pakulamulira ndi kuyeza. Itha kugwiritsidwanso ntchito ngati remote control, monitoring, etc. Ndi yoyenera kuwongolera ndi kuteteza zida zamagetsi zamagetsi za substation ndi migodi, komanso yoyenera malo omwe magetsi amagwiritsidwa ntchito nthawi zambiri mu gridi yamagetsi yakumidzi.
