天津SANIL開關(guān)SD-12MSP-04,SD-12MSBP-04,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

SQT-7A1-W SQT-7A1-X SQT-7A1-Y SQT-7A1-Z
SQT-7A2-W SQT-7A2-X SQT-7A2-Y SQT-7A2-Z
SQT-7A3-W SQT-7A3-X SQT-7A3-Y SQT-7A3-Z
SQT-7A4-W SQT-7A4-X SQT-7A4-Y SQT-7A4-Z
SQT-7A5-W SQT-7A5-X SQT-7A5-Y SQT-7A5-Z
SQT-7A6-W SQT-7A6-X SQT-7A6-Y SQT-7A6-Z
SQT-7A7-W SQT-7A7-X SQT-7A7-Y SQT-7A7-Z
SQT-7A8-W SQT-7A8-X SQT-7A8-Y SQT-7A8-Z
SQT-7AR-W SQT-7AR-X SQT-7AR-Y SQT-7AR-Z
SQT-7AN-W SQT-7AN-X SQT-7AN-Y SQT-7AN-Z
SQT-7B1-W SQT-7B1-X SQT-7B1-Y SQT-7B1-Z
SQT-7B2-W SQT-7B2-X SQT-7B2-Y SQT-7B2-Z
SQT-7B3-W SQT-7B3-X SQT-7B3-Y SQT-7B3-Z
SQT-7B4-W SQT-7B4-X SQT-7B4-Y SQT-7B4-Z
SQT-7B5-W SQT-7B5-X SQT-7B5-Y SQT-7B5-Z
SQT-7B6-W SQT-7B6-X SQT-7B6-Y SQT-7B6-Z
SQT-7B7-W SQT-7B7-X SQT-7B7-Y SQT-7B7-Z
SQT-7B8-W SQT-7B8-X SQT-7B8-Y SQT-7B8-Z
SQT-7BR-W SQT-7BR-X SQT-7BR-Y SQT-7BR-Z
SQT-7BN-W SQT-7BN-X SQT-7BN-Y SQT-7BN-Z
SQT-7C1-W SQT-7C1-X SQT-7C1-Y SQT-7C1-Z
SQT-7C2-W SQT-7C2-X SQT-7C2-Y SQT-7C2-Z
SQT-7C3-W SQT-7C3-X SQT-7C3-Y SQT-7C3-Z
SQT-7C4-W SQT-7C4-X SQT-7C4-Y SQT-7C4-Z
SQT-7C5-W SQT-7C5-X SQT-7C5-Y SQT-7C5-Z
SQT-7C6-W SQT-7C6-X SQT-7C6-Y SQT-7C6-Z
SQT-7C7-W SQT-7C7-X SQT-7C7-Y SQT-7C7-Z
SQT-7C8-W SQT-7C8-X SQT-7C8-Y SQT-7C8-Z
SQT-7CR-W SQT-7CR-X SQT-7CR-Y SQT-7CR-Z
SQT-7CN-W SQT-7CN-X SQT-7CN-Y SQT-7CN-Z
SQT-7D1-W SQT-7D1-X SQT-7D1-Y SQT-7D1-Z
SQT-7D2-W SQT-7D2-X SQT-7D2-Y SQT-7D2-Z
SQT-7D3-W SQT-7D3-X SQT-7D3-Y SQT-7D3-Z
SQT-7D4-W SQT-7D4-X SQT-7D4-Y SQT-7D4-Z
SQT-7D5-W SQT-7D5-X SQT-7D5-Y SQT-7D5-Z
SQT-7D6-W SQT-7D6-X SQT-7D6-Y SQT-7D6-Z
SQT-7D7-W SQT-7D7-X SQT-7D7-Y SQT-7D7-Z
SQT-7D8-W SQT-7D8-X SQT-7D8-Y SQT-7D8-Z
SQT-7DR-W SQT-7DR-X SQT-7DR-Y SQT-7DR-Z
SQT-7DN-W SQT-7DN-X SQT-7DN-Y SQT-7DN-Z
SQT-7E1-W SQT-7E1-X SQT-7E1-Y SQT-7E1-Z
SQT-7E2-W SQT-7E2-X SQT-7E2-Y SQT-7E2-Z
SQT-7E3-W SQT-7E3-X SQT-7E3-Y SQT-7E3-Z
SQT-7E4-W SQT-7E4-X SQT-7E4-Y SQT-7E4-Z
SQT-7E5-W SQT-7E5-X SQT-7E5-Y SQT-7E5-Z
SQT-7E6-W SQT-7E6-X SQT-7E6-Y SQT-7E6-Z
SQT-7E7-W SQT-7E7-X SQT-7E7-Y SQT-7E7-Z
SQT-7E8-W SQT-7E8-X SQT-7E8-Y SQT-7E8-Z
SQT-7ER-W SQT-7ER-X SQT-7ER-Y SQT-7ER-Z
SQT-7EN-W SQT-7EN-X SQT-7EN-Y SQT-7EN-Z
SQT-7F1-W SQT-7F1-X SQT-7F1-Y SQT-7F1-Z
SQT-7F2-W SQT-7F2-X SQT-7F2-Y SQT-7F2-Z
SQT-7F3-W SQT-7F3-X SQT-7F3-Y SQT-7F3-Z
SQT-7F4-W SQT-7F4-X SQT-7F4-Y SQT-7F4-Z
SQT-7F5-W SQT-7F5-X SQT-7F5-Y SQT-7F5-Z
SQT-7F6-W SQT-7F6-X SQT-7F6-Y SQT-7F6-Z
SQT-7F7-W SQT-7F7-X SQT-7F7-Y SQT-7F7-Z
SQT-7F8-W SQT-7F8-X SQT-7F8-Y SQT-7F8-Z
SQT-7FR-W SQT-7FR-X SQT-7FR-Y SQT-7FR-Z
SQT-7FN-W SQT-7FN-X SQT-7FN-Y SQT-7FN-Z
SQT-7R1-W SQT-7R1-X SQT-7R1-Y SQT-7R1-Z
SQT-7R2-W SQT-7R2-X SQT-7R2-Y SQT-7R2-Z
SQT-7R3-W SQT-7R3-X SQT-7R3-Y SQT-7R3-Z
SQT-7R4-W SQT-7R4-X SQT-7R4-Y SQT-7R4-Z
SQT-7R5-W SQT-7R5-X SQT-7R5-Y SQT-7R5-Z
SQT-7R6-W SQT-7R6-X SQT-7R6-Y SQT-7R6-Z
SQT-7R7-W SQT-7R7-X SQT-7R7-Y SQT-7R7-Z
SQT-7R8-W SQT-7R8-X SQT-7R8-Y SQT-7R8-Z
SQT-7RR-W SQT-7RR-X SQT-7RR-Y SQT-7RR-Z
SQT-7RN-W SQT-7RN-X SQT-7RN-Y SQT-7RN-Z
SQT-9A1-W SQT-9A1-X SQT-9A1-Y SQT-9A1-Z
SQT-9A2-W SQT-9A2-X SQT-9A2-Y SQT-9A2-Z
SQT-9A3-W SQT-9A3-X SQT-9A3-Y SQT-9A3-Z
SQT-9A4-W SQT-9A4-X SQT-9A4-Y SQT-9A4-Z
SQT-9A5-W SQT-9A5-X SQT-9A5-Y SQT-9A5-Z
SQT-9A6-W SQT-9A6-X SQT-9A6-Y SQT-9A6-Z
SQT-9A7-W SQT-9A7-X SQT-9A7-Y SQT-9A7-Z
SQT-9A8-W SQT-9A8-X SQT-9A8-Y SQT-9A8-Z
SQT-9AR-W SQT-9AR-X SQT-9AR-Y SQT-9AR-Z
SQT-9AN-W SQT-9AN-X SQT-9AN-Y SQT-9AN-Z
SQT-9B1-W SQT-9B1-X SQT-9B1-Y SQT-9B1-Z
SQT-9B2-W SQT-9B2-X SQT-9B2-Y SQT-9B2-Z
SQT-9B3-W SQT-9B3-X SQT-9B3-Y SQT-9B3-Z
SQT-9B4-W SQT-9B4-X SQT-9B4-Y SQT-9B4-Z
SQT-9B5-W SQT-9B5-X SQT-9B5-Y SQT-9B5-Z
SQT-9B6-W SQT-9B6-X SQT-9B6-Y SQT-9B6-Z
SQT-9B7-W SQT-9B7-X SQT-9B7-Y SQT-9B7-Z
SQT-9B8-W SQT-9B8-X SQT-9B8-Y SQT-9B8-Z
SQT-9BR-W SQT-9BR-X SQT-9BR-Y SQT-9BR-Z
SQT-9BN-W SQT-9BN-X SQT-9BN-Y SQT-9BN-Z
SQT-9C1-W SQT-9C1-X SQT-9C1-Y SQT-9C1-Z
SQT-9C2-W SQT-9C2-X SQT-9C2-Y SQT-9C2-Z
SQT-9C3-W SQT-9C3-X SQT-9C3-Y SQT-9C3-Z
SQT-9C4-W SQT-9C4-X SQT-9C4-Y SQT-9C4-Z

光纖水位計光纖水位計包括水位計傳感器部分和控制電路終端部分。其中，水位計傳感器部分采用光路耦合調(diào)節(jié)設(shè)備與光纜連接用于傳遞承載水位信息的光信號，控制電路終端部分采用激光調(diào)制技術(shù)，發(fā)送不同功能的調(diào)制激光信號，通過調(diào)制、對比與檢測，獲得水位的準(zhǔn)確信息。這一原理實現(xiàn)了全程光測量，在室外不使用任何帶電器件，可以杜絕靜電危害防止雷電擊毀。跟蹤式水位計又稱接觸式水位計，利用重錘上的電測針接觸水面發(fā)出電信號，使電機正轉(zhuǎn)或逆轉(zhuǎn)，隨時跟蹤水面點的位置，從而測定水位。一般在較陡岸坡上架設(shè)鐵管，懸錘和懸索在管道中升降，驅(qū)動記錄或訊號裝置。鐵管進水口需有沉沙和靜水設(shè)施。壓力式水位計它的工作原理是測量水壓力，推算水位。其特點是不需建靜水測井。
天津SANIL開關(guān)SD-12MSP-04,SD-12MSBP-04,

SQT-9C5-W SQT-9C5-X SQT-9C5-Y SQT-9C5-Z
SQT-9C6-W SQT-9C6-X SQT-9C6-Y SQT-9C6-Z
SQT-9C7-W SQT-9C7-X SQT-9C7-Y SQT-9C7-Z
SQT-9C8-W SQT-9C8-X SQT-9C8-Y SQT-9C8-Z
SQT-9CR-W SQT-9CR-X SQT-9CR-Y SQT-9CR-Z
SQT-9CN-W SQT-9CN-X SQT-9CN-Y SQT-9CN-Z
SQT-9D1-W SQT-9D1-X SQT-9D1-Y SQT-9D1-Z
SQT-9D2-W SQT-9D2-X SQT-9D2-Y SQT-9D2-Z
SQT-9D3-W SQT-9D3-X SQT-9D3-Y SQT-9D3-Z
SQT-9D4-W SQT-9D4-X SQT-9D4-Y SQT-9D4-Z
SQT-9D5-W SQT-9D5-X SQT-9D5-Y SQT-9D5-Z
SQT-9D6-W SQT-9D6-X SQT-9D6-Y SQT-9D6-Z
SQT-9D7-W SQT-9D7-X SQT-9D7-Y SQT-9D7-Z
SQT-9D8-W SQT-9D8-X SQT-9D8-Y SQT-9D8-Z
SQT-9DR-W SQT-9DR-X SQT-9DR-Y SQT-9DR-Z
SQT-9DN-W SQT-9DN-X SQT-9DN-Y SQT-9DN-Z
SQT-9E1-W SQT-9E1-X SQT-9E1-Y SQT-9E1-Z
SQT-9E2-W SQT-9E2-X SQT-9E2-Y SQT-9E2-Z
SQT-9E3-W SQT-9E3-X SQT-9E3-Y SQT-9E3-Z
SQT-9E4-W SQT-9E4-X SQT-9E4-Y SQT-9E4-Z
SQT-9E5-W SQT-9E5-X SQT-9E5-Y SQT-9E5-Z
SQT-9E6-W SQT-9E6-X SQT-9E6-Y SQT-9E6-Z
SQT-9E7-W SQT-9E7-X SQT-9E7-Y SQT-9E7-Z
SQT-9E8-W SQT-9E8-X SQT-9E8-Y SQT-9E8-Z
SQT-9ER-W SQT-9ER-X SQT-9ER-Y SQT-9ER-Z
SQT-9EN-W SQT-9EN-X SQT-9EN-Y SQT-9EN-Z
SQT-9F1-W SQT-9F1-X SQT-9F1-Y SQT-9F1-Z
SQT-9F2-W SQT-9F2-X SQT-9F2-Y SQT-9F2-Z
SQT-9F3-W SQT-9F3-X SQT-9F3-Y SQT-9F3-Z
SQT-9F4-W SQT-9F4-X SQT-9F4-Y SQT-9F4-Z
SQT-9F5-W SQT-9F5-X SQT-9F5-Y SQT-9F5-Z
SQT-9F6-W SQT-9F6-X SQT-9F6-Y SQT-9F6-Z
SQT-9F7-W SQT-9F7-X SQT-9F7-Y SQT-9F7-Z
SQT-9F8-W SQT-9F8-X SQT-9F8-Y SQT-9F8-Z
SQT-9FR-W SQT-9FR-X SQT-9FR-Y SQT-9FR-Z
SQT-9FN-W SQT-9FN-X SQT-9FN-Y SQT-9FN-Z
SQT-9R1-W SQT-9R1-X SQT-9R1-Y SQT-9R1-Z
SQT-9R2-W SQT-9R2-X SQT-9R2-Y SQT-9R2-Z
SQT-9R3-W SQT-9R3-X SQT-9R3-Y SQT-9R3-Z
SQT-9R4-W SQT-9R4-X SQT-9R4-Y SQT-9R4-Z
SQT-9R5-W SQT-9R5-X SQT-9R5-Y SQT-9R5-Z
SQT-9R6-W SQT-9R6-X SQT-9R6-Y SQT-9R6-Z
SQT-9R7-W SQT-9R7-X SQT-9R7-Y SQT-9R7-Z
SQT-9R8-W SQT-9R8-X SQT-9R8-Y SQT-9R8-Z
SQT-9RR-W SQT-9RR-X SQT-9RR-Y SQT-9RR-Z
SQT-9RN-W SQT-9RN-X SQT-9RN-Y SQT-9RN-Z

SUB-2A1-W SUB-2A1-X SUB-2A1-Y SUB-2A1-Z
SUB-2A2-W SUB-2A2-X SUB-2A2-Y SUB-2A2-Z
SUB-2A3-W SUB-2A3-X SUB-2A3-Y SUB-2A3-Z
SUB-2A4-W SUB-2A4-X SUB-2A4-Y SUB-2A4-Z
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SUB-2A8-W SUB-2A8-X SUB-2A8-Y SUB-2A8-Z
SUB-2AR-W SUB-2AR-X SUB-2AR-Y SUB-2AR-Z
SUB-2AN-W SUB-2AN-X SUB-2AN-Y SUB-2AN-Z
SUB-2B1-W SUB-2B1-X SUB-2B1-Y SUB-2B1-Z
SUB-2B2-W SUB-2B2-X SUB-2B2-Y SUB-2B2-Z
SUB-2B3-W SUB-2B3-X SUB-2B3-Y SUB-2B3-Z
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SUB-2B6-W SUB-2B6-X SUB-2B6-Y SUB-2B6-Z
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SUB-2B8-W SUB-2B8-X SUB-2B8-Y SUB-2B8-Z
SUB-2BR-W SUB-2BR-X SUB-2BR-Y SUB-2BR-Z
SUB-2BN-W SUB-2BN-X SUB-2BN-Y SUB-2BN-Z
SUB-2C1-W SUB-2C1-X SUB-2C1-Y SUB-2C1-Z
SUB-2C2-W SUB-2C2-X SUB-2C2-Y SUB-2C2-Z
SUB-2C3-W SUB-2C3-X SUB-2C3-Y SUB-2C3-Z
SUB-2C4-W SUB-2C4-X SUB-2C4-Y SUB-2C4-Z
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SUB-2CR-W SUB-2CR-X SUB-2CR-Y SUB-2CR-Z
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SUB-2F7-W SUB-2F7-X SUB-2F7-Y SUB-2F7-Z
SUB-2F8-W SUB-2F8-X SUB-2F8-Y SUB-2F8-Z
SUB-2FR-W SUB-2FR-X SUB-2FR-Y SUB-2FR-Z
SUB-2FN-W SUB-2FN-X SUB-2FN-Y SUB-2FN-Z
SUB-2G1-W SUB-2G1-X SUB-2G1-Y SUB-2G1-Z
SUB-2G2-W SUB-2G2-X SUB-2G2-Y SUB-2G2-Z
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又稱為SoftStarter。它不僅實現(xiàn)在整個起動過程中無沖擊而平滑的起動電機，而且可根據(jù)電動機負載的特性來調(diào)節(jié)起動過程中的參數(shù)，如限流值、起動時間等。此外，它還具有多種對電機保護功能，這就從根本上解決了傳統(tǒng)的降壓起動設(shè)備的諸多弊端。發(fā)展趨勢編輯隨著國產(chǎn)變頻器產(chǎn)業(yè)的迅速發(fā)展，變頻器的價格不再高高在上，它不僅解決了電機啟動產(chǎn)生大沖擊電流的問題，并且具有很好的節(jié)能效果，因此，曾經(jīng)風(fēng)光一時的軟啟動器似乎有些沒落，聲音越來越小。但是軟啟動器面臨的替代壓力確實越來越大，[1]這種情況在尤為明顯。由于工業(yè)技術(shù)一直較為落后，在十多年前，的變頻器產(chǎn)業(yè)剛剛起步，沒有定價權(quán)，國內(nèi)市場大部分為品牌占據(jù)，變頻器的成本一直居高不下。
天津SANIL開關(guān)SD-12MSP-04,SD-12MSBP-04,

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完全關(guān)斷同樣開關(guān)Q1的時間大約是完全導(dǎo)通時間的48倍。當(dāng)外部負載或C2在啟動瞬間要汲取較大電流時，快速導(dǎo)通Q1可能使MAX810輸入電壓低于其復(fù)位門檻電壓從而導(dǎo)致復(fù)位出現(xiàn)，因此在圖2基礎(chǔ)上再增加一RC網(wǎng)絡(luò)以減緩其開通過程，合適地選擇R、C可使負載連接過程延續(xù)到幾個MAX668開關(guān)工作周期，使MAX668的輸出電壓一直高于MAX810的復(fù)位門檻電壓。假如R、C使Q1的導(dǎo)通時間延長，同時也延長了關(guān)斷時間。因此需要在電阻上并聯(lián)一肖特基二極管，以加速當(dāng)負載過載時關(guān)閉Q1的進程。為了獲得增強型通道及較低的導(dǎo)通電阻，上述電路均需要采用邏輯電平控制的P溝道MOSFET，如果Q1的導(dǎo)通電阻值較大且在其兩端產(chǎn)生較大的壓降（特別是低輸出電壓應(yīng)用場合或負載離電源的距離較遠時）。
天津SANIL開關(guān)SD-12MSP-04,SD-12MSBP-04,

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而且可以大大減少意外事故損失，其主要功能有：●及時性。油田后方能夠?qū)崟r掌握每個區(qū)域、甚至每口油、氣井的生產(chǎn)動態(tài)，為快速制定生產(chǎn)和經(jīng)營方案提供決策依據(jù)?！褡詣訄缶到y(tǒng)。在出現(xiàn)意外情況，如輸油管線破裂，造成主管流量和分支管線流量之和產(chǎn)生較大差異，上位計算機經(jīng)運算發(fā)出報警，提醒用戶及時采取措施，減少事故損失?！裨诰植繀^(qū)域，如一個采油站或聯(lián)合站內(nèi)，出現(xiàn)異常情況，如某管線壓力嚴(yán)重下降，可自動關(guān)閉相關(guān)閥門，防止事故發(fā)生?！裉岣呓y(tǒng)計數(shù)據(jù)的準(zhǔn)確性。本系統(tǒng)提供各種形式的自動報表，不但節(jié)約大量人力，也減少了因人為因素造成的誤差?！裣到y(tǒng)維護量小。由于采用了無線通訊技術(shù)，野外沒有通訊線路，可大大減少維護量?！裨诓捎驼尽⒙?lián)合站也可監(jiān)控每口井或每個采油站的生產(chǎn)情況。
天津SANIL開關(guān)SD-12MSP-04,SD-12MSBP-04,

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外觀精致，按鈕人性化，顯示屏亮麗?？达@示屏：液晶顯示屏的好壞直接影響儀表壽命，差的顯示屏用了一斷時間后字跡會變得模糊，昏暗。常見故障編輯無紙記錄儀采用144*144彩色顯示屏，設(shè)定數(shù)據(jù)與記錄數(shù)據(jù)具掉電保護功能；采用USBHost技術(shù)，提供USB總線接口，實現(xiàn)FAT16文件系統(tǒng)，支持USB移動存儲器的數(shù)據(jù)讀寫；具有體積小、通道數(shù)多、功耗低、精度高、通用性強、運行穩(wěn)定、可靠性高等特點。常見故障：通道不進數(shù)，即改變通道信號值大小，通道顯示值無任何變化。A用萬用表在接線端子上測量信號是否正常;B檢查通道模塊開關(guān)與信號類型是否設(shè)置正確;C打開表殼，檢查通道信號電纜是否接好。儀表通電不工作。A檢查儀表220V電源端子接線是否正確;B檢查儀表絲是否熔斷;C擰下儀表后的固定螺釘。
天津SANIL開關(guān)SD-12MSP-04,SD-12MSBP-04,

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所以對大容量變頻器更加有效。還可以用隔離板把本體和散熱器隔開,使散熱器的散熱不影響到變頻器本體。這樣效果也很好。注意：變頻器散熱設(shè)計中都是以垂直安裝為基礎(chǔ)的，橫著放散熱會變差的!冷卻風(fēng)扇一般功率稍微大一點的變頻器，都帶有冷卻風(fēng)扇。同時，也建議在控制柜上出風(fēng)口安裝冷卻風(fēng)扇。進風(fēng)口要加濾網(wǎng)以防止灰塵進入控制柜。注意控制柜和變頻器上的風(fēng)扇都是要的，不能誰替代誰。其他關(guān)于散熱的問題在海拔高于1000m的地方，因為空氣密度降低，因此應(yīng)加大柜子的冷卻風(fēng)量以改善冷卻效果。理論上變頻器也應(yīng)考慮降容，1000m每-5%。但由于實際上因為設(shè)計上變頻器的負載能力和散熱能力一般比實際使用的要大，所以也要看具體應(yīng)用。比方說在1500m的地方。
天津SANIL開關(guān)SD-12MSP-04,SD-12MSBP-04,

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由于安裝人員沒有正確設(shè)定變頻器的V/F參數(shù)，導(dǎo)致電機運行一段時間后轉(zhuǎn)子出現(xiàn)磁飽和，致使電機轉(zhuǎn)速降低，發(fā)熱而過載。所以在新變頻器使用以前，必須設(shè)置好該參數(shù)，另外使用變頻器的無速度傳感器矢量控制方式時，沒有正確的設(shè)置負載電機的額定電壓、電流、容量等參數(shù)，也會導(dǎo)致電機熱過載，還有一種情形是設(shè)置的變頻器載波率過高時，也會導(dǎo)致電機發(fā)熱過載，后一種情形是電氣設(shè)計者設(shè)計變頻器常常在低頻段工作，而沒有考慮到在低頻段工作的電機散熱變差的問題，致使電機工作一段時間后發(fā)熱過載，對于這種，需加裝散熱裝置。損壞原因編輯變頻器散熱不好其實我們都知道，溫度過高對任何設(shè)備都具有破壞作用，就像人的大腦那樣，溫度過高也會把腦子燒壞。
天津SANIL開關(guān)SD-12MSP-04,SD-12MSBP-04,