Incamake y'umushinga:Itsinda rya Qingdao Metro rigura ibikoresho muri HUAYI kugirango bigenzure umutekano.
Igisubizo:Mu rwego rwo gukora neza, Itsinda rya Metro rya Qingdao ryaguze ibizamini byo guhangana nubutaka, DC itanga ingufu za voltage nini, ibizamini byo kurwanya imirongo hamwe na inverter series - parallel resonant ihanganira ibikoresho bya voltage biva muri HUAYI, bikoreshwa mugusuzuma umutekano.
