Cholembera cholakwika

Mabanja ambiri ku UK ali ndi chidwi ndi PEM System (zoteteza padziko lonse lapansi), pomwe nthaka ya nthaka imathamangira malo ophunzitsira omwe aphatikizidwa ndi magawo angapo. Makina awa ali ndi vuto loti asakhale osowa kwambiri, pomwe kukhazikika kokweza chifukwa chonyansa kapena kuwonongeka kungakulitse chiopsezo chamagetsi.
Cholembera cholakwika: kwa ma ts-cs osasunthika kumapeto kwa wogwiritsa ntchito (monga tafotokozera pamwambapa), pomwe mzere wolembera umadulidwa chifukwa cha kuyimitsidwa ndikuyimilira , ndipo bokosi logawa RCD silikugwira ntchito bwino panthawiyi, mphamvu ya nthaka yoteteza ndi yofanana ndi voliyumu ya moto L.
Ngati sichikhala ndi chitetezo chotere, chipolopolo cha Ev pakulipiritsa chidzaperekedwa ndi voliyumu yofanana ndi moto wa L
Voteji. Ngati palibe zida zina kupatula za mtundu wa Ipeni, kutayikira komweko kudzapitilira 30ma ndipo munthuyu sangathe kudzipha yekha, yemwe ali pachiwopsezo cha chitetezo; Ngati pali zida zina, kutayikira komwe kumatha kupitirira 100ma, komwe kumapha kwambiri.