140DAI55300
140DAI55300140DAI55300
四三相異步電動(dòng)機(jī)溫升試驗(yàn)額定負(fù)載下繞組工作溫度（θw）的確定
1、電阻法確定繞組工作溫度
溫升試驗(yàn)斷電停機(jī)后，用外推外作熱電阻讀數(shù)對(duì)斷電后冷卻時(shí)間（ｔ）關(guān)系曲線，此曲線外推至ｔ＝0時(shí)的電阻值即為Rw。
●業(yè)從事（DCS系統(tǒng)）（機(jī)器人系統(tǒng)）（大型伺服控制系統(tǒng)）模塊 備件銷售廈門[泰尼電氣有
廈門泰尼備件解決方案銷售中心：
轉(zhuǎn)子流量計(jì)在工業(yè)生產(chǎn)過程中應(yīng)用較廣，可以測(cè)量多種介質(zhì)的流量，特別適用于中小管徑和低雷諾數(shù)的中小流量測(cè)量。轉(zhuǎn)子流量計(jì)結(jié)構(gòu)簡(jiǎn)單，靈敏度高，量程比寬（10：1），壓力損失小且恒定，對(duì)直管段的要求不高，刻度近似線性，價(jià)格便宜，使用維護(hù)簡(jiǎn)便。但儀表受被測(cè)介質(zhì)密度、粘度、溫度、壓力等因素的影響，其精度一般在1．5級(jí)左右。
2、局部溫度計(jì)法確定繞組工作溫度任一溫度計(jì)的最高讀數(shù)即為繞組工作溫度。
五其他需要確定溫升部件
鐵心：用試驗(yàn)結(jié)束時(shí)所測(cè)的的鐵心溫度減去上述環(huán)境溫度，則可以得到鐵心溫升。
軸承：在溫升試驗(yàn)即將結(jié)束的時(shí)，用半導(dǎo)體點(diǎn)溫度計(jì)，在接近軸承外圍的部位，測(cè)取軸承溫度。
集電環(huán)和換向器：在溫升穩(wěn)定停機(jī)后，盡快在其表面取得，一般使用電導(dǎo)體溫度計(jì)，集電環(huán)和換向器的溫升值為上述測(cè)量值與溫升試驗(yàn)環(huán)境之差。
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