Chosinthira cha 12kV 630A chodzaza mafuta chokhala ndi malo anayi chapangidwira kabati yosinthira mphete ya US-box yopangidwa kuti ikwaniritse miyezo ya IEEE, IEC ndi GB pazofunikira zonse. Chingagwiritsidwe ntchito m'makina okhala pansi pa nthaka kapena pansi pa nthaka.

Chosinthira champhamvu chodzazidwa ndi mafuta chokhala ndi malo anayi mu choyikamo, pafupi ndi pakati pa transformer chingachepetse kulumikizana kwamkati Capacitance ya chingwe, motero chimachepetsa kwambiri kuzungulira kwa resonance ya ferromagnetic. Kuyika mbali zonse ziwiri ndi kuyika pamwamba kulipo Kwa transformer wamba waku America kapena transformer yobisika.