I-1.Ijubane lishesha kakhulu futhi amandla okukhiqiza aphezulu. Uma kuqhathaniswa nomshini wejubane eliphansi, okukhiphayo kanye nokusetshenziswa kwamandla ngesikhathi esifanayo kunezinzuzo ezisobala.
2.Izinto zikagesi ezinegama lomkhiqizo njengeMitsubishi, Yaskawa, njll., zisezingeni elithembekile futhi zinhle ngemuva kokuthengisa.
I-3.DC motor main, inempilo ende nokusebenza okuzinzile nokuthembekile. Ama-DC motors nawo angafakwa kwezinye izingxenye.
4.Ngokwenhloso ethize, singahlinzeka ngohlelo olufanele lwemigqa.