變極多速三相異步電動(dòng)機(jī)是三相異步電動(dòng)機(jī)的主要派生系列之一。該電機(jī)可隨時(shí)負(fù)載狀態(tài)有級(jí)地改變轉(zhuǎn)速，達(dá)到功率的合理匹配和簡(jiǎn)化變速系統(tǒng)。它廣泛應(yīng)用在機(jī)床、礦山、冶金、紡織、印染、化工、農(nóng)機(jī)等部門。
YD系列電動(dòng)機(jī)的功率等級(jí)與安裝尺寸的對(duì)應(yīng)關(guān)系與國(guó)外同類型先進(jìn)產(chǎn)品相當(dāng)，便于單機(jī)或機(jī)床配套出口，也可作為引進(jìn)設(shè)備中同類型電機(jī)的備品電動(dòng)機(jī)。
YD series varible pole multi-speed three-phase asynchronous motore are one of the main serise products deriving from three-phase serise.This kind of motor can change rotational speed to meet the requirements of load state,so that they can properly match the demands of power and simplity adjustable speed system. they are widely used in such industrial and agricultural departments,as machine tools,mining metallurgy,spinning and weaving,printing and dyeing,chemical industry and agricultural machinery,etc.
For similar correspondent relationship between power rank and insullation dimensions,YD serise motors are equivalent to other foreign advanced machines, and therefore they are matchig with single-machine or machine tool for export as well as spare motors for similar types imported from abroad.
