山東變頻器維修：仔細(xì)做好軟啟動(dòng)器的平時(shí)維修保養(yǎng)以及維修工作中，內(nèi)容包括按時(shí)(如3個(gè)月)對(duì)軟啟動(dòng)器開展除灰，重中之重是整流器柜、逆變電源柜和控制箱，必要時(shí)可將整流模塊、逆變模塊和控制柜內(nèi)的線路板拆出后進(jìn)行除塵。變頻器下進(jìn)風(fēng)口、上出風(fēng)口是否積塵或因積塵過多而堵塞。軟啟動(dòng)器下進(jìn)氣口、上通風(fēng)口是不是積灰或因積塵過多而阻塞。軟啟動(dòng)器因自身 熱管散熱規(guī)定自然通風(fēng)量大，故運(yùn)作必須時(shí)間之后，面積塵非常比較嚴(yán)重，須按時(shí)清理除灰。

　　Shandong Inverter Maintenance: Carefully do the usual maintenance and maintenance work of soft starter, including timely (for example, three months) to carry out the soft starter ash removal, the most important is the rectifier cabinet, inverter power cabinet and control box, if necessary, the rectifier module, inverter module and control cabinet circuit board will be removed after dust removal. Whether the lower air inlet and the upper air outlet of the frequency converter accumulate dust or are blocked by excessive dust accumulation. Is the lower inlet and upper vent of soft starter dirty or blocked by excessive dust? Soft starter has large natural ventilation capacity due to its own heat pipe heat dissipation, so it must be operated after a period of time, the area of dust is very serious, and it must be cleaned up on time.

　　將軟啟動(dòng)器前門開啟, 側(cè)門拆卸, 認(rèn)真仔細(xì)交、直流電母線有沒有形變、浸蝕、空氣氧化，母線相接處螺釘有沒有松動(dòng)，各安裝支撐點(diǎn)處牢固螺釘有沒有松動(dòng)，固定用絕緣片或絕緣柱有無老化開裂或變形，如有應(yīng)及時(shí)更換，重新緊固，對(duì)已發(fā)生變形的母排須校正后重新安裝。

　　Open the front door of the soft starter, dismantle the side door, carefully and carefully check whether the AC and DC buses are deformed, eroded, air oxidized, whether the bolts at the junction of buses are loosened, whether the bolts at the installation support points are loosened, whether the insulating sheet or the insulating column are aged, cracked or deformed, if any, timely replacement and re-tightening should be carried out, and the deformed busbar must be corrected after weight. New installation.

　　對(duì)線路板、母排等除塵后，進(jìn)行必要的防腐處理，涂刷絕緣漆，對(duì)已出現(xiàn)局部放電、拉弧的母排須去除其毛刺后，再進(jìn)行處理。對(duì)已絕緣擊穿的絕緣板，須去除其損壞部分，在其損壞附近用相應(yīng)絕緣等級(jí)的絕緣板對(duì)其進(jìn)行隔絕處理，緊固并測(cè)試絕緣并認(rèn)為合格后方可投入使用。

　　After dust removal of circuit boards and busbar, necessary anti-corrosion treatment is carried out, insulation paint is painted, and burrs of busbar with partial discharge and arc are removed before treatment. The damaged part of the insulating plate that has been broken down must be removed. The insulating plate of corresponding insulation grade should be used to isolate the damaged part. The insulating plate should be tightened and tested, and it can be put into use only after it is considered qualified.

　　整流器柜、逆變電源柜里電扇運(yùn)作及旋轉(zhuǎn)是不是一切正常，關(guān)機(jī)時(shí)，用手旋轉(zhuǎn)，觀查滾動(dòng)軸承有沒有卡住或雜聲，必需時(shí)拆換滾動(dòng)軸承或檢修。

　　Whether the operation and rotation of fans in rectifier cabinet and inverter power cabinet are normal or not, when shutdown, rotate by hand to check whether the rolling bearings are jammed or noisy, and remove or repair the rolling bearings when necessary.

　　對(duì)輸入、整流及逆變、直流輸入快熔進(jìn)行全面檢查，發(fā)現(xiàn)燒毀及時(shí)更換。

　　Full inspection of input, rectification, inversion and DC input fast melting was carried out, and timely replacement was found.

　　中間直流回路中的電容器有無漏液，外殼有無膨脹、鼓泡或變形，安全閥是否破裂，有條件的可對(duì)電容容量、漏電流、耐壓等進(jìn)行測(cè)試，對(duì)不符合要求的電容進(jìn)行更換，對(duì)新電容或長(zhǎng)期閑置未使用的電容，更換前須對(duì)其進(jìn)行鈍化處理。濾波電容的使用周期一般為5年，對(duì)使用時(shí)間在5年以上，電容容量、漏電流、耐壓等指標(biāo)明顯偏離檢測(cè)標(biāo)準(zhǔn)的，應(yīng)酌情部分或全部更換。

　　If the capacitor in the middle DC circuit leaks, whether the shell expands, bubbles or deforms, whether the safety valve ruptures or not, the capacitance capacity, leakage current and withstand voltage can be tested conditionally, the capacitance that does not meet the requirements can be replaced, and the new capacitor or long-term idle unused capacitor must be passivated before replacement. The service life of the filter capacitor is generally five years. If the capacitance, leakage current and withstand voltage deviate from the test standard, the filter capacitor should be replaced partially or totally as appropriate.

　　對(duì)整流器、逆變電源一部分的二級(jí)管、gto用數(shù)字萬用表開展電氣檢測(cè)，測(cè)量其順向、反方向阻值，并在事先制定好的表格內(nèi)認(rèn)真做好記錄，看各極間阻值是否正常，同一型號(hào)的器件一致性是否良好，必要時(shí)進(jìn)行更換。

　　The secondary tube and GTO of rectifier and inverter power supply are tested by digital multimeter, and their forward and reverse resistance values are measured. The resistance values between the poles are recorded carefully in the pre-formulated tables to see if they are normal and if the device of the same type is in good consistency, and if necessary, they are replaced.

　　對(duì)a1、a2進(jìn)線柜內(nèi)的主接觸器及其它輔助接觸器進(jìn)行檢查，仔細(xì)觀察各接觸器動(dòng)靜觸頭有無拉弧、毛刺或表面氧化、凹凸不平，發(fā)現(xiàn)此類問題應(yīng)對(duì)其相應(yīng)的動(dòng)靜觸頭進(jìn)行更換，確保其接觸安全可靠。

　　Check the main contactor and other auxiliary contactors in the A1 and A2 wire entry cabinets, carefully observe whether the dynamic and static contacts of each contactor have arc, burr or surface oxidation, uneven, and find that such problems should be replaced corresponding dynamic and static contacts to ensure their safe and reliable contact.

　　仔細(xì)檢查端子排有無老化、松脫，是否存在短路隱性故障，各連接線連接是否牢固，線皮有無破損，各電路板接插頭接插是否牢固。進(jìn)出主電源線連接是否可靠，連接處有無發(fā)熱氧化等現(xiàn)象，接地是否良好。

　　Check carefully whether the terminal row is aging and loosening, whether there is a hidden fault of short circuit, whether the connection of the connecting wires is firm, whether the wire skin is damaged or not, and whether the plugs and connectors of the circuit boards are firm. Whether the connection of the main power line is reliable, whether there is heating and oxidation at the connection, and whether the grounding is good.

　　電抗器有無異常鳴叫、振動(dòng)或糊味。

　　Whether the reactor has abnormal sound, vibration or paste.