GDJW-40B inogona kushandiswa kuyedza kugovera magetsi eiyo inopomerwa yakamiswa insulator kana murabhoritari yekuona yakamiswa insulator, uye kugonesa kunyatsoona yakavanzika yemukati dambudziko reiyo insulator, kunatsiridza kuvimbika kwekushanda kwegidhi remagetsi system, uye kugadzirisa. kushanda zvakanaka kwevashandi vemutsara vanoita ongororo yekurarama.