IEC combines its knowledge of customer needs with the latest in technology, to provide low-cost, reliable user friendly and high - quality drive solutions. The INVAC series of variable speed AC drives are based on the IGBT inverter and a 16 bit micro-controller chip. They can operate standard induction motors with shaft outputs ranging from 0.75 KW to 100 KW as variable speed drives. The ECOVAC series of economical variable speed AC drives are based on the IPM inverter and a 16 bit micro-controller chip. They can operate standard induction motors with shaft outputs ranging from 0.75 KW to 1.5 KW as variable speed drives. The INVECTOR series of variable speed AC drives are Vector Controlled Drives using a 32 bit DSP chip. They can operate standard induction motors with shaft outputs ranging from 0.75 KW to 250 KW as variable speed drives in either the Vector Controlled mode or the V/f mode. IEC also builds customized drives to meet your every need.