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西門子通訊模塊6ES7155-5AA00-0AA0
西門子通訊模塊6ES7155-5AA00-0AA0 價格:32  元(人民幣) 產(chǎn)地:6ES7155-5AA00-0AA0
最少起訂量:1 發(fā)貨地:6ES7155-5AA00-0AA0
上架時間:2023-10-20 14:49:14 瀏覽量:71
廈門海通華業(yè)科技有限公司  
經(jīng)營模式:代理商 公司類型:私營有限責(zé)任公司
所屬行業(yè):PLC控制系統(tǒng) 主要客戶:電廠,鋼鐵廠,水泥廠,
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變頻器功率的選用 系統(tǒng)效率等于變頻器效率與電動機效率的乘積,只有兩者都處在較高的效率下工作時,則系統(tǒng)效率才較高。從效率角度出發(fā),在選用變頻器功率時,要注意以下幾點: 1、變頻器功率值與電動機功率值相當(dāng)時合適,以利變頻器在高的效率值下運轉(zhuǎn)。 2、在變頻器的功率分級與電動機功率分級不相同時,則變頻器的功率要盡可能接近電動機的功率,但應(yīng)略大于電動機的功率。 3、當(dāng)電動機屬頻繁起動、制動工作或處于重載起動且較頻繁工作時,可選取大一級的變頻器,以利用變頻器長期、安全地運行。 4、經(jīng)測試,電動機實際功率確實有富余,可以考慮選用功率小于電動機功率的變頻器,但要注意瞬時峰值電流是否會造成過電流保護動作。 5、當(dāng)變頻器與電動機功率不相同時,則必須相應(yīng)調(diào)整節(jié)能程序的設(shè)置,以利達到較高的節(jié)能效果。


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