Y系列電動(dòng)機(jī)是封閉自扇冷式鼠籠型三相異步電動(dòng)機(jī)。是我國(guó)統(tǒng)一設(shè)計(jì)的新的基本系列，它是中國(guó)八十年代取代JO2系列的更新?lián)Q代產(chǎn)品。安裝尺寸和功率等級(jí)符合IEC標(biāo)準(zhǔn)，外殼防護(hù)等級(jí)為IP44。 Y系列電動(dòng)機(jī)具有高效、節(jié)能、起動(dòng)轉(zhuǎn)矩高，噪聲低，運(yùn)行安全可靠等優(yōu)點(diǎn)。 Y系列電動(dòng)機(jī)適用于驅(qū)動(dòng)無特殊要求的各種機(jī)械設(shè)備，如機(jī)床、風(fēng)機(jī)、泵等。 本系統(tǒng)電動(dòng)機(jī)額定電壓為380V，頻率為50Hz。3kW（4HP）及以下者為Y接法，4kW（5.5HP)及以上者為△接法。電壓為220-600V之間，頻率為60Hz或濕熱帶型的電動(dòng)機(jī)，可特殊訂貨供應(yīng)。 Y series motors are TEFC (total enclosed fan-cooled) squirrel cage three-Phase asynchronous motors. The whole series is a new basic series designed unitedly in China,so it takes the place of old JO2-series.Mounting dimensions and output ratings are conform-ed with IEC specifications.The degree of protection in Y series is in accord with IP44. Y series notors have such superior properties as hight efficiency,lower energy consumption,high starting torque,low noise, little vibration and safe running. Yseries notors are suitable for driving machines and equipments without special raquirements,such as machine tools,blowers and pumps etc.Rated voltage:380V. Rated frequency:50Hz. Y-connection is used for motors of 3 kW(4HP) and below,and△-connection for motors of 4 kW(5.5HP)and over. Motors with voltages etween 200 to 600V and with freqency of 60Hz or for humid-tropic service type can be ordered specially.