蘇州市批發(fā)shinhwa繼電器SAS-2350A,韓國Sinwoo S-CON變送器。中山立訊電氣有限公司,中山朗立電氣有限公司
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MUL-2H2-W MUL-2H2-X MUL-2H2-Y MUL-2H2-Z
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MUL-2HR-W MUL-2HR-X MUL-2HR-Y MUL-2HR-Z
MUL-2HN-W MUL-2HN-X MUL-2HN-Y MUL-2HN-Z
MUL-4A1-W MUL-4A1-X MUL-4A1-Y MUL-4A1-Z
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因進線電壓過高，直流回路電壓超過了設(shè)定的極限值，在減速時電壓調(diào)節(jié)器起作用，造成制動電流很小，電機轉(zhuǎn)速降不下來，而在軋鋼時，電網(wǎng)的負載加重，直流回路電壓低于115%的極限設(shè)定值，制動功能恢復(fù)正常。在當時無法降低電網(wǎng)電壓的情況下，將直流回路電壓極限設(shè)定值增至127%后，變頻器工作正常。在停產(chǎn)檢修時，我們根據(jù)電網(wǎng)的情況改變了變壓器的檔位，使變頻器的進線電壓在允許的范圍內(nèi)，此后變頻器工作正常。(3)AEGMultiverter22/27-400變頻器上電后，操作面板上的液晶顯示屏顯示正常，但ready指示燈不亮，變頻器不能合閘查看變頻器菜單中的故障記錄時未發(fā)現(xiàn)有故障，而對操作面板上各按鍵的操作在事件記錄中則有記錄。
蘇州市批發(fā)shinhwa繼電器SAS-2350A,
MUL-4B2-W MUL-4B2-X MUL-4B2-Y MUL-4B2-Z
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MUL-4DR-W MUL-4DR-X MUL-4DR-Y MUL-4DR-Z
MUL-4DN-W MUL-4DN-X MUL-4DN-Y MUL-4DN-Z
MUL-4E1-W MUL-4E1-X MUL-4E1-Y MUL-4E1-Z
MUL-4E2-W MUL-4E2-X MUL-4E2-Y MUL-4E2-Z
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MUL-4ER-W MUL-4ER-X MUL-4ER-Y MUL-4ER-Z
MUL-4EN-W MUL-4EN-X MUL-4EN-Y MUL-4EN-Z
MUL-4F1-W MUL-4F1-X MUL-4F1-Y MUL-4F1-Z
MUL-4F2-W MUL-4F2-X MUL-4F2-Y MUL-4F2-Z
MUL-4F3-W MUL-4F3-X MUL-4F3-Y MUL-4F3-Z
MUL-4F4-W MUL-4F4-X MUL-4F4-Y MUL-4F4-Z
用于電力系統(tǒng)的電流互感器一次額定電流為5～25000A，用于試驗設(shè)備的精密電流互感器為0.1～50000A。電流互感器可在一次額定電流下長期運行，負荷電流超過額定電流值時叫做過負荷，電流互感器長期過負荷運行，會燒壞繞組或減少使用壽命。2.3二次額定電流：允許通過電流互感器二次繞組的一次感應(yīng)電流。2.4額定電流比（變比）：一次額定電流與二次額定電流之比。2.5額定電壓：一次繞組長期對地能夠承受的電壓（有效值以kV為單位），應(yīng)不低于所接線路的額定相電壓。電流互感器的額定電壓分為0.5，10，35，110，220，330，500kV等幾種電壓等級。2.610%倍數(shù)：在的二次負荷和任意功率因數(shù)下，電流互感器的電流誤差為－10%時。
蘇州市批發(fā)shinhwa繼電器SAS-2350A,
MUL-4F5-W MUL-4F5-X MUL-4F5-Y MUL-4F5-Z
MUL-4F6-W MUL-4F6-X MUL-4F6-Y MUL-4F6-Z
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MUL-7F1-W MUL-7F1-X MUL-7F1-Y MUL-7F1-Z
MUL-7F2-W MUL-7F2-X MUL-7F2-Y MUL-7F2-Z
過熱保護功能：通過軟起動器內(nèi)部熱繼電器檢測晶閘管散熱器的溫度，一旦散熱器溫度超過允許值后自動關(guān)斷晶閘管，并發(fā)出報警信號。測量回路參數(shù)功能：電動機工作時，軟啟動器內(nèi)的檢測器一直監(jiān)視著電動機運行狀態(tài)，并將監(jiān)測到的參數(shù)送給CPU進行處理，CPU將監(jiān)測參數(shù)進行分析、存儲、顯示。因此電動機軟起動器還具有測量回路參數(shù)的功能。其它功能：通過電子電路的組合，還可在系統(tǒng)中實現(xiàn)其它種種聯(lián)鎖保護。主要應(yīng)用交流鼠籠異步電動機由于結(jié)構(gòu)簡單，控制方便，效率高而被人們廣泛地應(yīng)用于機械設(shè)備的拖動中。在民用建筑中的大多數(shù)機械設(shè)備如消防泵、噴淋泵、生活泵、冷凍機組等的動力都是交流鼠籠異步電機。當建筑物層數(shù)較高或規(guī)模較大時。
蘇州市批發(fā)shinhwa繼電器SAS-2350A,
MUL-7F3-W MUL-7F3-X MUL-7F3-Y MUL-7F3-Z
MUL-7F4-W MUL-7F4-X MUL-7F4-Y MUL-7F4-Z
MUL-7F5-W MUL-7F5-X MUL-7F5-Y MUL-7F5-Z
MUL-7F6-W MUL-7F6-X MUL-7F6-Y MUL-7F6-Z
MUL-7F7-W MUL-7F7-X MUL-7F7-Y MUL-7F7-Z
MUL-7F8-W MUL-7F8-X MUL-7F8-Y MUL-7F8-Z
MUL-7FR-W MUL-7FR-X MUL-7FR-Y MUL-7FR-Z
MUL-7FN-W MUL-7FN-X MUL-7FN-Y MUL-7FN-Z
MUL-7G1-W MUL-7G1-X MUL-7G1-Y MUL-7G1-Z
MUL-7G2-W MUL-7G2-X MUL-7G2-Y MUL-7G2-Z
MUL-7G3-W MUL-7G3-X MUL-7G3-Y MUL-7G3-Z
MUL-7G4-W MUL-7G4-X MUL-7G4-Y MUL-7G4-Z
MUL-7G5-W MUL-7G5-X MUL-7G5-Y MUL-7G5-Z
MUL-7G6-W MUL-7G6-X MUL-7G6-Y MUL-7G6-Z
MUL-7G7-W MUL-7G7-X MUL-7G7-Y MUL-7G7-Z
MUL-7G8-W MUL-7G8-X MUL-7G8-Y MUL-7G8-Z
MUL-7GR-W MUL-7GR-X MUL-7GR-Y MUL-7GR-Z
MUL-7GN-W MUL-7GN-X MUL-7GN-Y MUL-7GN-Z
MUL-7H1-W MUL-7H1-X MUL-7H1-Y MUL-7H1-Z
MUL-7H2-W MUL-7H2-X MUL-7H2-Y MUL-7H2-Z
MUL-7H3-W MUL-7H3-X MUL-7H3-Y MUL-7H3-Z
MUL-7H4-W MUL-7H4-X MUL-7H4-Y MUL-7H4-Z
MUL-7H5-W MUL-7H5-X MUL-7H5-Y MUL-7H5-Z
MUL-7H6-W MUL-7H6-X MUL-7H6-Y MUL-7H6-Z
MUL-7H7-W MUL-7H7-X MUL-7H7-Y MUL-7H7-Z
MUL-7H8-W MUL-7H8-X MUL-7H8-Y MUL-7H8-Z
MUL-7HR-W MUL-7HR-X MUL-7HR-Y MUL-7HR-Z
MUL-7HN-W MUL-7HN-X MUL-7HN-Y MUL-7HN-Z
MUL-9A1-W MUL-9A1-X MUL-9A1-Y MUL-9A1-Z
MUL-9A2-W MUL-9A2-X MUL-9A2-Y MUL-9A2-Z
MUL-9A3-W MUL-9A3-X MUL-9A3-Y MUL-9A3-Z
MUL-9A4-W MUL-9A4-X MUL-9A4-Y MUL-9A4-Z
MUL-9A5-W MUL-9A5-X MUL-9A5-Y MUL-9A5-Z
MUL-9A6-W MUL-9A6-X MUL-9A6-Y MUL-9A6-Z
MUL-9A7-W MUL-9A7-X MUL-9A7-Y MUL-9A7-Z
MUL-9A8-W MUL-9A8-X MUL-9A8-Y MUL-9A8-Z
MUL-9AR-W MUL-9AR-X MUL-9AR-Y MUL-9AR-Z
MUL-9AN-W MUL-9AN-X MUL-9AN-Y MUL-9AN-Z
MUL-9B1-W MUL-9B1-X MUL-9B1-Y MUL-9B1-Z
MUL-9B2-W MUL-9B2-X MUL-9B2-Y MUL-9B2-Z
MUL-9B3-W MUL-9B3-X MUL-9B3-Y MUL-9B3-Z
MUL-9B4-W MUL-9B4-X MUL-9B4-Y MUL-9B4-Z
MUL-9B5-W MUL-9B5-X MUL-9B5-Y MUL-9B5-Z
波形畸變不超過2%。過流整定范圍為2-9.9A(無輔助電源)，級差為0.1A，電流整定值誤差不大于±3%。速動倍數(shù)整定范圍為2-9.9倍，級差為0.1倍，電流速動整定值誤差不大于±3%。繼電器的速動電流用電流整定值的倍數(shù)表示：速動電流=速動倍數(shù)×整定電流。速動動作時間：繼電器任一整定點上，在1.2倍速動電流時的動作時間不大于50ms。返回系數(shù)：不小于0.9。反時限特性曲線動作方程：t：反時限動作時間K：延時曲線系數(shù)（整定范圍0.1～9.9）。Is：整定電流值I：實際輸入電流值（注：I/Is不大于1.2為不推薦使用段）。反時限特性時間整定誤差：a)當I/Is<2時,平均誤差不大于10%；
蘇州市批發(fā)shinhwa繼電器SAS-2350A,
MUL-9B6-W MUL-9B6-X MUL-9B6-Y MUL-9B6-Z
MUL-9B7-W MUL-9B7-X MUL-9B7-Y MUL-9B7-Z
MUL-9B8-W MUL-9B8-X MUL-9B8-Y MUL-9B8-Z
MUL-9BR-W MUL-9BR-X MUL-9BR-Y MUL-9BR-Z
MUL-9BN-W MUL-9BN-X MUL-9BN-Y MUL-9BN-Z
MUL-9C1-W MUL-9C1-X MUL-9C1-Y MUL-9C1-Z
MUL-9C2-W MUL-9C2-X MUL-9C2-Y MUL-9C2-Z
MUL-9C3-W MUL-9C3-X MUL-9C3-Y MUL-9C3-Z
MUL-9C4-W MUL-9C4-X MUL-9C4-Y MUL-9C4-Z
MUL-9C5-W MUL-9C5-X MUL-9C5-Y MUL-9C5-Z
MUL-9C6-W MUL-9C6-X MUL-9C6-Y MUL-9C6-Z
MUL-9C7-W MUL-9C7-X MUL-9C7-Y MUL-9C7-Z
MUL-9C8-W MUL-9C8-X MUL-9C8-Y MUL-9C8-Z
MUL-9CR-W MUL-9CR-X MUL-9CR-Y MUL-9CR-Z
MUL-9CN-W MUL-9CN-X MUL-9CN-Y MUL-9CN-Z
MUL-9D1-W MUL-9D1-X MUL-9D1-Y MUL-9D1-Z
MUL-9D2-W MUL-9D2-X MUL-9D2-Y MUL-9D2-Z
MUL-9D3-W MUL-9D3-X MUL-9D3-Y MUL-9D3-Z
MUL-9D4-W MUL-9D4-X MUL-9D4-Y MUL-9D4-Z
MUL-9D5-W MUL-9D5-X MUL-9D5-Y MUL-9D5-Z
MUL-9D6-W MUL-9D6-X MUL-9D6-Y MUL-9D6-Z
MUL-9D7-W MUL-9D7-X MUL-9D7-Y MUL-9D7-Z
MUL-9D8-W MUL-9D8-X MUL-9D8-Y MUL-9D8-Z
MUL-9DR-W MUL-9DR-X MUL-9DR-Y MUL-9DR-Z
MUL-9DN-W MUL-9DN-X MUL-9DN-Y MUL-9DN-Z
MUL-9E1-W MUL-9E1-X MUL-9E1-Y MUL-9E1-Z
MUL-9E2-W MUL-9E2-X MUL-9E2-Y MUL-9E2-Z
MUL-9E3-W MUL-9E3-X MUL-9E3-Y MUL-9E3-Z
MUL-9E4-W MUL-9E4-X MUL-9E4-Y MUL-9E4-Z
MUL-9E5-W MUL-9E5-X MUL-9E5-Y MUL-9E5-Z
MUL-9E6-W MUL-9E6-X MUL-9E6-Y MUL-9E6-Z
MUL-9E7-W MUL-9E7-X MUL-9E7-Y MUL-9E7-Z
MUL-9E8-W MUL-9E8-X MUL-9E8-Y MUL-9E8-Z
MUL-9ER-W MUL-9ER-X MUL-9ER-Y MUL-9ER-Z
減少設(shè)備的沖擊和噪聲，延長設(shè)備的使用壽命。采用變頻調(diào)速控制后，使機械系統(tǒng)簡化，操作和控制更加方便，有的甚至可以改變原有的工藝規(guī)范，從而提高了整個設(shè)備的功能。例如，紡織和許多行業(yè)用的定型機，機內(nèi)溫度是靠改變送入熱風(fēng)的多少來調(diào)節(jié)的。輸送熱風(fēng)通常用的是循環(huán)風(fēng)機，由于風(fēng)機速度不變，送入熱風(fēng)的多少只有用風(fēng)門來調(diào)節(jié)。如果風(fēng)門調(diào)節(jié)失靈或調(diào)節(jié)不當就會造成定型機失控，從而影響成品質(zhì)量。循環(huán)風(fēng)機高速啟動，傳動帶與軸承之間磨損非常厲害，使傳動帶變成了一種易耗品。在采用變頻調(diào)速后，溫度調(diào)節(jié)可以通過變頻器自動調(diào)節(jié)風(fēng)機的速度來實現(xiàn)，解決了產(chǎn)品質(zhì)量問題。此外，變頻器能夠很方便地實現(xiàn)風(fēng)機在低頻低速下啟動并減少了傳動帶與軸承之間的磨損。
蘇州市批發(fā)shinhwa繼電器SAS-2350A,
MUL-9EN-W MUL-9EN-X MUL-9EN-Y MUL-9EN-Z
MUL-9F1-W MUL-9F1-X MUL-9F1-Y MUL-9F1-Z
MUL-9F2-W MUL-9F2-X MUL-9F2-Y MUL-9F2-Z
MUL-9F3-W MUL-9F3-X MUL-9F3-Y MUL-9F3-Z
MUL-9F4-W MUL-9F4-X MUL-9F4-Y MUL-9F4-Z
MUL-9F5-W MUL-9F5-X MUL-9F5-Y MUL-9F5-Z
MUL-9F6-W MUL-9F6-X MUL-9F6-Y MUL-9F6-Z
MUL-9F7-W MUL-9F7-X MUL-9F7-Y MUL-9F7-Z
MUL-9F8-W MUL-9F8-X MUL-9F8-Y MUL-9F8-Z
MUL-9FR-W MUL-9FR-X MUL-9FR-Y MUL-9FR-Z
MUL-9FN-W MUL-9FN-X MUL-9FN-Y MUL-9FN-Z
MUL-9G1-W MUL-9G1-X MUL-9G1-Y MUL-9G1-Z
MUL-9G2-W MUL-9G2-X MUL-9G2-Y MUL-9G2-Z
MUL-9G3-W MUL-9G3-X MUL-9G3-Y MUL-9G3-Z
MUL-9G4-W MUL-9G4-X MUL-9G4-Y MUL-9G4-Z
MUL-9G5-W MUL-9G5-X MUL-9G5-Y MUL-9G5-Z
MUL-9G6-W MUL-9G6-X MUL-9G6-Y MUL-9G6-Z
MUL-9G7-W MUL-9G7-X MUL-9G7-Y MUL-9G7-Z
MUL-9G8-W MUL-9G8-X MUL-9G8-Y MUL-9G8-Z
MUL-9GR-W MUL-9GR-X MUL-9GR-Y MUL-9GR-Z
MUL-9GN-W MUL-9GN-X MUL-9GN-Y MUL-9GN-Z
MUL-9H1-W MUL-9H1-X MUL-9H1-Y MUL-9H1-Z
MUL-9H2-W MUL-9H2-X MUL-9H2-Y MUL-9H2-Z
MUL-9H3-W MUL-9H3-X MUL-9H3-Y MUL-9H3-Z
MUL-9H4-W MUL-9H4-X MUL-9H4-Y MUL-9H4-Z
MUL-9H5-W MUL-9H5-X MUL-9H5-Y MUL-9H5-Z
MUL-9H6-W MUL-9H6-X MUL-9H6-Y MUL-9H6-Z
MUL-9H7-W MUL-9H7-X MUL-9H7-Y MUL-9H7-Z
MUL-9H8-W MUL-9H8-X MUL-9H8-Y MUL-9H8-Z
MUL-9HR-W MUL-9HR-X MUL-9HR-Y MUL-9HR-Z
MUL-9HN-W MUL-9HN-X MUL-9HN-Y MUL-9HN-Z
所以，各變頻器都在散熱板上配置了過熱保護器件；⑶制動電阻過熱保護制動電阻的標稱功率是按短時運行選定的。所以，一旦通電時間過長，就會過熱。這時，應(yīng)暫停使用，待冷卻后再用?；蜻x用較大一點功率電阻；⑷冷卻風(fēng)道的入口和出口不得堵塞，環(huán)境溫度也可能高于變頻器的允許值。如果還有問題，你可以打電話給我們。在VVVF的實施，有兩種基本的調(diào)制方法：1.脈幅調(diào)制（PAM）逆變器所得交流電壓的振幅值等于直流電壓值（Um=Ud)。因此，實現(xiàn)變頻也是變壓的容易想到的方法，便是在調(diào)節(jié)頻率的同時，也調(diào)節(jié)直流電壓；這種方法的特點是，變頻器在改變輸出頻率的同時，也改變了電壓的振幅值，故稱為脈幅調(diào)制，常用PAM(PulseAmplitudeModulation)表示。
蘇州市批發(fā)shinhwa繼電器SAS-2350A,
