Specifications: 
1) Rated voltage: 440V / three phase 
2) Power range: 5.5 ~ 55kW 
3) Output frequency: 0.1 ~ 400Hz 

Features: 
1) Automatic setting for acceleration / deceleration 
2) 16-level preset table speed, switch of 4-level accelerating/decelerating time 
3) RS-485 in-line interface build-in 
4) Automatic control of motor parameters, precise location control 
5) Automatic voltage regulation (AVR) 
6) All-dimensional protection 
7) Includes PID circuit control 
8) Senseless vector control 
9) Program and vector control of fan and water pump makes it more economical