Kuzindikira Zolakwa za PEN
Mabanja ambiri aku UK ali ndi mawaya a PME system (Protective Multiple Earth), pomwe mawaya a dziko lapansi amathamangira kumalo olumikizirana nawo omwe amalumikizidwa ndi kondakitala wosalowerera ndale womwe umayikidwa pamalo angapo. Makinawa amatha kukhala ndi vuto losowa kwambiri lomwe limatchedwa kusalowerera ndale, pomwe kutsika kwamtunda chifukwa chakuwonongeka kapena kuwonongeka kungapangitse ngozi yamagetsi.
PEN Fault Detection: Kwa machitidwe a TN-CS opanda maziko kumapeto kwa wogwiritsa ntchito (monga momwe tawonetsera pamwambapa), pamene mzere wa PEN wopita kunyumba wadulidwa chifukwa cha vuto la mzere ndipo mapeto akumbuyo a mzere wa PEN atayimitsidwa popanda kubwerezabwereza. , ndipo bokosi logawa RCD silikugwira ntchito bwino panthawiyi, voteji ya nthaka yotetezera PE ndi yofanana ndi magetsi a mzere wamoto L.
Ngati sichikhala ndi chitetezo ichi, chipolopolo cha EV pakulipiritsa chidzaperekedwa ndi magetsi ofanana ndi mzere wamoto L.
Voteji. Ngati palibe zida zina kupatula chojambulira cha EV, kutayikira kwapano kudzapitirira 30mA ndipo munthuyo sangathe kudzichotsa yekha, zomwe ndizowopsa; ngati pali zida zina, kutayikira kwapano kumatha kupitilira 100mA, zomwe zimapha kwambiri.