產(chǎn)品詳情
西門子軟啟動器上海代理商，西門子中國代理商，河北省山西省遼寧省吉林省黑龍江省江蘇省浙江省安徽省福建省江西省山東省河南省湖北省湖南廣東省海南省四川省貴州省云南省陜西省甘肅省青海省北京市天津市上海市重慶市廣西內(nèi)蒙古西藏寧夏新疆
軟啟動時間的延長會導(dǎo)致軟啟動器晶閘管更大的熱負(fù)荷
>> 斜坡軟啟動過程的延長可以帶來較小的電流減小但卻會導(dǎo)致更大的熱負(fù)荷斜坡軟停止會產(chǎn)生一個與電機(jī)啟動時電流相仿但特性與電機(jī)固有特性相反的軟停止電流
>>斜坡軟停止會導(dǎo)致軟啟動器和電機(jī)額外的熱負(fù)荷
軟停止過程也可能會導(dǎo)致綜合保護(hù)裝置的熱負(fù)荷超限，使得保護(hù)裝置的熱過載跳閘，這將取決于軟啟動器或電機(jī)在運(yùn)行過程中熱量積累的程度。
使用軟啟動器的幾點(diǎn)原則:
原則1
軟啟動器可以避免因使用接觸器等直接啟動設(shè)備啟動所帶來的電網(wǎng)和機(jī)械沖擊，而且在啟動過程中所產(chǎn)生的熱量小于直接啟動所產(chǎn)生熱量。
減小啟動電流（比如作為電網(wǎng)保護(hù)）不是首要的目的，關(guān)鍵是能解決設(shè)備過熱的問題。
原則2
電流的限制值會影響到電機(jī)的恒定轉(zhuǎn)矩。不要調(diào)整啟動電流低于某個定值（比如3.5倍的額定電流）而且也不要調(diào)整過快的啟動速度。當(dāng)產(chǎn)生由于熱過載造成脫扣的狀況，可以提升軟啟動器的電流限制值以達(dá)到更快的啟動過程。在啟動斜坡的作用下，電機(jī)電流（相應(yīng)的啟動力矩）將緩慢的上升到限制電流值。
根據(jù)應(yīng)用場合，調(diào)整啟動電壓，選擇啟動時間比如1s。
SIEMENS 上海啟水自動化科技有限公司
Shanghai QI SHUI Automation Technology Co., Ltd.
聯(lián)系人 ：田 杰 (銷售工程師)
24小時服務(wù)熱線 ：150 2149 6224
電話（ Tel ）： 021-60641327
企業(yè)（ Q Q ）：2317088974
郵箱（Email）: [email protected]
地址（ Add ）：上海市松江區(qū)弘翔路58號195幢
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