摘要：本文介紹了國產高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" 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title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" 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title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器" title="高壓變頻器">高壓變頻器在浙江省衢州巨化硫酸廠的改造應用情況，冷卻水循環泵變頻改造后的運行數據表明，改造是成功的，節能效果是明顯的。
關鍵詞：高壓變頻器 冷卻水循環泵
Abstract: The paper introduces the application of high voltage inverter in cooling water cyclic pump in the factory of vitriol THQJ. The running data indicate that the alternation is successful and the effect of saving energy is distinct.
Key word: High voltage inverter Cooling water cyclic pump

1、引言：
浙江省衢州巨化硫酸廠是我國首批自己設計、制造、安裝的重點硫酸生產企業，是浙江省最大的硫酸生產廠。在硫酸生產過程中，需要對水冷極板進行冷卻，冷卻水循環泵是硫酸生產工藝中的重要設備，過去冷卻水循環泵均不調速，利用出口閥門來控制水流量和管網壓力，由于設備的選擇都是按最大負荷情況來選型，在實際運行中設備留有較大的余量，冷卻水的流量與壓力是通過冷卻水循環泵出、入口聯絡管上的調節閥來進行調節，造成電動機運行效率較低，造成電能浪費，為降低生產成本，經過論證，決定選用風光牌JD-BP37型高壓變頻器對冷卻水循環泵進行變頻調速節能改造，以解決能源浪費問題。冷卻水循環泵工作原理如圖1所示，三臺循環泵兩開一備。

圖1冷卻水循環泵工作原理圖

2、用戶冷卻水循環泵及配套電動機有關參數為：
水泵型號： 500S-35 單級雙吸離心泵；
流量：561L∕S 轉速：970r/min
揚程：35m
電機功率：280KW
電壓：6000V
電流：35.2A
轉速：985r/min

3、新風光JD-BP37型高壓變頻調速器

3.1 JD-BP37型高壓變頻調速器簡介
JD-BP37型高壓變頻調速器采用最新型IGBT為主控器件，全數字化，彩色液晶觸摸屏控制，以高可靠性、易操作、高性能為設計目標的優質變頻調速器。經過多年研發，產品已廣泛應用于冶金、石油、化工、電力、水泥、給排水、制藥、造紙、污水處理等各個行業。成為精品，決非偶然。
風光高壓變頻器，采用若干個低壓逆變器功率單元串聯的方式實現直接高壓輸出，所用的6kv高壓變頻器，變壓器有18組付邊繞組，分為6個功率單元∕相，三相共18個單元，采用36脈沖整流，輸入端的諧波成分滿足國標規定 ，高壓變頻器系統結構如圖2所示，單元電路的主電路如圖3所示，旁路支路采用可控硅模塊。

圖2 高壓變頻器系統結構圖

圖3 單元電路主電路

3.2 JD-BP37型高壓變頻調速器主要技術性能

3.2.1 高——高電壓源型變頻器，直接6KV輸入，直接6KV輸出，無須任何輸出變壓器或濾波器，適配于普通高壓電動機，對電機、電纜絕緣無損害。

3.2.2 輸入功率因數高，電流諧波小，無須功率因數補償、諧波抑制裝置。

3.2.3 單元電路模塊化設計，維護簡單，互換性好。

3.2.4 高壓主回路與控制器之間為光纖連接，強弱電隔離，安全可靠。

3.2.5 完善的故障檢測，精確的故障保護及準確的定位顯示和報警。

3.2.6 內置PLC，適應現場多變需求。

3.2.7 控制電源與高壓電相互獨立，無高壓可以檢測變頻器輸出，便于現場調試以及培訓操作人員，便于維護。

3.2.8 功率單元經24小時高溫老化、150％負載試驗，可靠性高。

3.2.9 中文Windows 操作界面，彩色液晶觸摸屏操作。

3.2.10 可接收和輸出多路工業標準信號。

3.2.11 可打印輸出運行報表。

4、控制原理及電氣設備改造回路圖

變頻器控制3#循環泵，2#、1#循環泵一開一備。現在以冷卻水母管壓力為給定量，根據工藝所需母管壓力調節循環泵轉速，壓力信號取自主管網，目標壓力值設定在0.24Mpa 。

電氣設備改造回路圖如圖4

5 、高壓變頻器節電情況介紹

設備改造工程于2005年1月完成，高壓變頻器一次試車成功，運行正常，頻率運行在40Hz左右，保證了循環水的正常溫度。其節電相關數據為：

⒌⒈工頻運行數據為：

5月27日14:30 運行頻率50Hz 輸入電流23.8A 輸入電壓6KV
5月27日21:35 運行頻率50Hz 輸入電流26.4A 輸入電壓6KV
5月28日08:00 運行頻率50Hz 輸入電流25.2A 輸入電壓6KV
5月28日21:00 運行頻率50Hz 輸入電流24.8A 輸入電壓6KV
5月29日06:25 運行頻率50Hz 輸入電流24.1A 輸入電壓6KV
工頻平均運行電流24.86A 功率因數COSΦ1 =0.85

⒌⒉變頻運行數據

5月27日11:00 運行頻率41:55Hz 輸入電流13.0A 輸入電壓6KV
5月27日12:00 運行頻率41:55Hz 輸入電流13.1A 輸入電壓6KV
5月27日13:00 運行頻率41:55Hz 輸入電流13.0A 輸入電壓6KV
5月27日14:00 運行頻率41:55Hz 輸入電流13.2A 輸入電壓6KV
變頻平均運行電流為13.07A ,功率因數為COSΦ2 =0.98

每年節省用電：
（I×COSΦ1-I×COSΦ2 ）×Ua×1.732×24小時×350天=71.8萬度

每年節省用電費用：每年節省用電×0.5元/度=35.9萬元

變頻運行時節電率達到40%。

設備運行時頻率達到35Hz，就可以達到工藝要求的出水壓力，春冬秋三個季節設備完全可以在35Hz運行，節電率可達到50%左右，按目前41Hz運行計算，每年可以節電71萬度，節省電費35.9萬元，其成本回收期為1.8年。

6、結束語

風光牌高壓變頻調速器在巨化股份公司硫酸廠冷卻水循環泵的應用，可以使冷卻水循環泵隨著負荷的變化調節冷卻水流量，達到節約能源的目的，同時對循環泵軟啟動，保護了水泵、電機，減少泵體和電機維護費用，改善了冷卻水循環泵運行工況，降低了企業生產成本。在高壓變頻技術越來越成熟的今天，相信國產高壓變頻調速器，在各個行業會有更好的表現。

本工程的承接單位浙江易嘉節能設備有限公司（www.zjece.com）為一家專業節能服務提供商。通過該280KW/6000V高壓變頻器的安裝、調試、運行，也體現出易嘉節能設備公司在節能行業較高的專業素質與技術水準。