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本電阻器主要用于起重機中以及類似于起重設備匹配YZR系列電動機的S3、S4及S5工作制的通用電阻器，它適用于交流50HZ，電壓至660V的電路中和控制器（屏）配合，控制電動機的起動、調速及制動。
- 型號含義
RF56系列起動調整電阻器
RF56-160M1-6/2B（配YZR160M1-6）起動調整電阻器
RF56-160M2-6/2B（配YZR-160M2-6）起動調整電阻器
RF56-160L-6/2B（配YZR160L-6）起動調整電阻器
RF56-180L-6/5J（配YZR180L-6）起動調整電阻器
RF56-200L-6/5J（配YZR200L-6）起動調整電阻器
RF56-225M-6/6J（配YZR225M-6）起動調整電阻器
RF56-250M1-6/7J（配YZR250M1-6）起動調整電阻器
RF56-250M2-6/8J（配YZR250M2-6）起動調整電阻器
RF56-280S-6/10J（配YZR280S-6）起動調整電阻器
RF56-280M-6/11J（配YZR280M-6）起動調整電阻器
RF56-160L-8/2B（配YZR160L-8）起動調整電阻器
RF56-180L-8/3J（配YZR180L-8）起動調整電阻器
RF56-200L-8/4J（配YZR200L-8）起動調整電阻器
RF56-225M-8/5J（配YZR225M-8）起動調整電阻器
RF56-250M1-8/6J（配YZR250M1-8）起動調整電阻器
RF56-250M2-8/7J（配YZR250M2-8）起動調整電阻器
RF56-280S-8/8J（配YZR280S-8）起動調整電阻器
RF56-280M-8/9J（配YZR280M-8）起動調整電阻器
RF56-315S-8/12J（配YZR315S-8）起動調整電阻器
RF56-315M-8/15J（配YZR315M-8）起動調整電阻器
RF56-315M-8J/17J（配YZR315M-8）起動調整電阻器
RF56-280S-10/7J（配YZR280S-10）起動調整電阻器
RF56-280M-10/9J（配YZR280M-10）起動調整電阻器
RF56-315S-10/9J（配YZR315S-10）起動調整電阻器
RF56-315M-10/12J（配YZR315M-10）起動調整電阻器
RF56-355M-10J/13J（配YZR355M-10 起動調整電阻器
RF56-355M-10J/13J（配YZR355M-10）起動調整電阻器
RF56-355L1-10J/16J（配YZR355L1-10起動調整電阻器
RF56-355L2-10J/19J（配YZR355L2-10）起動調整電阻器
RF56-400L1-10J/23J（配YZR400L1-10起動調整電阻器
RF56-400L2-10J/30J（配YZR400L2-10） 起動調整電阻器
