of the Hitachi SJ Series created a Sensorless Vector drive that is both
easy to install and energy efficient, providing maximum torque across
the widest speed range without overheating the motor. Technology pioneered
by Hitachi and which has become the industry standard.
The SJ100 has extended drive performance to new levels by providing starting
torque of 200% or more. They are suited for various applications in textile,
paper, printing, metalwork, cranes and elevators.
The New Hitachi SJ300 is a sensorless flux vector inverter that is small
in size and in open loop mode delivers 150% torque at 0Hz and greater
than 200% torque at 0.5Hz.
At the heart of the SJ300 lies a new state of the art power module that
uses Trenchgate technology developed in Japan. This new technology achieves
20-30% lower losses than traditional IGBT's at 50% higher current density.