... ISO9001:2000 Approved 2)AC wide input voltage 3)High frequency. 4) Reasonable price. high voltage frequency inverterALPHA5000 frequency inverter is an economical ... Feature: 1. Special magnetic flux vector control2. Low frequent high start torque: 0.5Hz/150%3. Built-in braking unit4 ... machine, Metal, Glass, Packaging, Plastic machining, Petrochemical, Chemical fiber, Paper & printing, Textile printing