Taxanaha YE4 aadka u sarreeya ee waxtarka saddex-waji asynchronous matoor waa matoor asynchronous saddex-waji ah oo si buuxda u xiran taageere-qaboojiye oo ay soo saartay oo ay naqshadaysay shirkadeena.Tusmada hufnaantu waxa ay raacaysaa shuruudaha waxtarka fasalka 2 ee GB 18613-2020 "Xadidaada Waxtarka Tamarta iyo Fasalada Waxtarka Tamarta ee Yaryar iyo Dhex-dhexaadka Saddex- Waji Asynchronous Motors".
Cabbirka jir ee matoorka taxanaha ah wuxuu u dhexeeyaa 80 ilaa 355, iyo darajadiisa awoodeed iyo cabbirkeeda kor u qaadista waxay buuxinaysaa shuruudaha GB/T4772.1/1EC60072-1 iyo GB/T4772.2/IEC60072-2 heerarka.