QZB系列自耦变压器适用于交流380V、50Hz功率14W至300KW的三相鼠笼型感应电动机的起动，以改善电动机起动时对输电网络的影响。自耦变压器是指它的绕组一部分是高压边和低压边共用的．另一部分只属于高压边。根据结构还可细分为可调压式和固定式。但若长期负载使用,总功率不得超过额定容量80%。
QZBseries auto-transformer is applicable to exchandes 50-60Hzs,the sum settles electric voltge380Vs ,power 14kWs-300ses of three mutually The rat cage type responds the electric motor the not multifarious declining presses to start ,toing improve the electric motor start give or get an electric shock the WEB to the influence that lose.
QZB-11KW, QZB-14KW, QZB-17KW, QZB-20KW, QZB-22KW, QZB-28KW, QZB-30KW, QZB-37KW, QZB-40KW, QZB-55KW，QZB-75KW，QZB-100KW，QZB-115KW，QZB-135KW，QZB-160KW，QZB-190KW，QZB-225KW，QZB-260KW，QZB-280KW，QZB-300KW