摘  要：本文以SV300iS5-4注塑机专用变频器为例介绍了注塑机变频改造可行性和改造中常出现的问题及处理方法，举例说明了注塑机变频改造节电效果及收回情况。

关键词：SV300iS5-4变频器；变量泵注塑机；节能改造                                

Abstract: In this paper application of WINNER VB vector inverter in energy save technical reconstruction for variable injection molding machine are introduced. The contro