原理：無刷自控電機(jī)液阻起動器是利用水電阻熱變特性來達(dá)到電機(jī)軟起動目的。液體阻值通過添加備用原料來改變。適用于輕載，中載，重載起動的滑環(huán)電機(jī)。

Principle: the brushless self-control motor starter with liquid resistance is manufactured based on water resistance thermal variation character to reach the purpose of soft starting. The liquid resistance value can be altered by adding in standby raw material and is applicable for slip ring electrical motor of light load, medium load and heavy load starting up.

在不同的場合，電源電壓的高低、負(fù)載的輕重、過電流的大小不一樣，液體的阻值須作一定的調(diào)整。電阻越大，電流越小，起動時間越長，液體發(fā)熱，電機(jī)起動困難；電阻越小，電流越大，起動時間越短，電機(jī)容易起動。產(chǎn)品一經(jīng)出廠，它是按照電機(jī)轉(zhuǎn)子的電壓、電流初步判斷電機(jī)負(fù)載情況已配制好的液阻。在現(xiàn)場起動有一定的起動失敗率時，客戶可適當(dāng)作一些調(diào)整。

At different occasion, it’s varied in power source voltage, load and current, and a certain adjustment shall be made on liquid resistance value. The more resistance the less current, the longer time on starting, the liquid will become hot and the motor starting will be difficulty; the less resistance, the stronger current, the starting time will be shorter, the motor is easy to start up. Once the product is ex-work, the motor load condition shall be judged initially based on the rotor voltage and current, and liquid resistance will be ready. A certain rate of starting failure may occur on-site, and the client may make a proper adjustment.

在調(diào)整前應(yīng)確定電源（10KV,6KV,380V）無缺相，起動柜及電動機(jī)*且過流整定值合適情況下再調(diào)整液體的阻值。根據(jù)經(jīng)驗，無刷自控電機(jī)起動器它優(yōu)于頻敏變阻器，但稍差于容積較大的液阻箱。如果在重載起動的場合，盡量讓電機(jī)定子主回路電流定值加大（3.5～4.5倍），盡量讓延時跳時間加長。根據(jù)負(fù)載的實際情況和現(xiàn)狀，滑環(huán)電機(jī)會出現(xiàn)過快起動或過慢起動。即起動時電流大快起動或起動時電流小慢起動兩種情況。此時現(xiàn)場工作人員應(yīng)作無刷自控電機(jī)液阻起動器內(nèi)部的水電阻阻值調(diào)整。Prior to adjustment, the power source （10KV,6KV,380V）shall be confirmed that the phase shall be complete, and the starting cabinet and electrical motor shall be free of malfunction and the liquid resistance value shall be adjusted when overcurrent setting value is suitable. In light of experience, the brushless self-control motor starter is superior to the frequency sensitive rheostat, but it’s slightly inferior to liquid resistance box with larger capacity. At the occasion of motor starting up with heavy load, and let the fixed value of main loop current of motor stator increase up to 3.5 ~ 4.5folds as far as possible, and try as far as possible to extend the time of overcurrent trip. According to actual condition and existing state of the load, the excessive fast or slow starting may occur on slip ring motor, i.e. fast starting with strong current and slow starting with low current. At this occasion, the on-site operator shall make an adjustment on the value of water resistance inside the starter.     

方法1：液體阻值過?。ㄒ后w濃度大）。主要表現(xiàn)為：①按下起動按鈕，電機(jī)幾乎沒有反應(yīng)，過流繼電器立刻跳閘；②電機(jī)起動電流偏大，電流急劇增大，電機(jī)提速過快，再加上二次涌流，有可能造成定子回路跳閘。（將近額定轉(zhuǎn)速時，離心力促使起動器內(nèi)部星點對接，會產(chǎn)生一定的二次涌流）。當(dāng)影響造成過流跳閘時，應(yīng)采取下列操作方案：無刷自控電機(jī)液阻起動器圓周上有兩個離心式排氣閥,旋下一只離心式排氣閥放出一些液體，然后再加入一定的純凈水，放出的與加入的純凈水重量應(yīng)*（如放出5公斤應(yīng)加入5公斤）。再看液位是否到離心式排氣閥閥桿上的紅色液面線。經(jīng)試驗如果還出現(xiàn)跳閘，重復(fù)上述方法、一直到電動機(jī)能順利起動為止。

Method 1: The liquid resistance value is too small （ the liquid concentration is big）: it mainly shows on: ① the motor has no reaction when the starting button is pressed down, the  overcurrent trip relay occurs immediay; ② the motor starting current is somewhat larger, the electric current is increasing rapidly, the speed acceleration on motor will be too fast, and current surge at second time will occur, it may result the overcurrent trip of stator loop. （ when approaching to rated r/min, the centrifugal force boost the star spots connection inside the starter, the second current surge may occur）. When it results 2nd overcurrent trip, the following scheme shall be taken: there are two centrifugal air release valves on the starter, and turn one of the valves and release some liquid, and a certain amount of pure water will be added in （if 5kg is released and 5kg shall be added in）, and check whether the liquid level is up to the red marks on the air release valve rod. If the trip occurs during test, the above method shall be repeated until the electric motor can be started smoothly.  

方法2：液體阻值過大（液體濃度?。?。主要表現(xiàn)為：①按下起動按鈕電機(jī)無反應(yīng)，電流很小，也不跳閘；②起動過慢，電機(jī)達(dá)不到速度，電流也不大，但就是不提速，達(dá)不到額定轉(zhuǎn)速，此時液體迅速發(fā)熱不能第二次起動。具體操作為：放出一定的液體，然后加入一定A包裝中固態(tài)起動原料（一般有60-90克）與防凍液配制的溶液，加入量與放出量應(yīng)當(dāng)*。如放出2公斤，應(yīng)加入2公斤，觀察是否到達(dá)了液面線。如果加液超出液面線時，起動過程中，多余的液體會從離心式排氣閥中甩出，屬正?，F(xiàn)象。如水加不到液面線，里面的液體淹不住極板 ，不利于起動。按照上述方法反復(fù)操作直至電機(jī)能正常起動。 

Method 2: The liquid resistance is too big （liquid concentration is small）. It mainly shows on:

①the motor has no reaction when the starting button is pressed down, and the electric current is very small, and no trip occurs;  ② the starting is too slow, and the motor is unable to reach the required speed and the electric current is not large, but no speed acceleration occurs and being unable to reach the rated r/min, and at this moment, the liquid will become hot swiftly and unable to make the 2^nd start. The actual operation is: release certain amount of liquid and then add in a certain amount solution prepared by use of solid starting raw material in package A （60 – 90 gram commonly） and the antifreeze, and the adding amount shall be equal to the released amount. For example, 2kg released, 2kg shall be added in, and see whether it reaches to the liquid surface mark; if the added amount exceeds the liquid surface mark, the excessive liquid will be discharged from the centrifugal air release valve, it’s a normal scene. If the added water fails to reach the liquid surface mark and unable to submerge the polar plate inside and it not benefit for starting.   The following method shall be repeated until the electric motor starts normally.

缺點；無刷自控電機(jī)液阻軟起動器優(yōu)于其他類型的起動器，是它可以現(xiàn)場根據(jù)電壓降、起動電流大小、電的質(zhì)量等情況來調(diào)配內(nèi)部阻值的大小。但是也有致命的弱點：由于體積小，內(nèi)部貯存液量有限，在難以一次性起動的情況下，會迅速發(fā)熱，一旦溫度高于65℃后，重新起動時，電流會比上次起動電流大，有時會跳閘。此時，應(yīng)間隔起動時間。待起動器水溫冷卻后再起動。一般電機(jī)運(yùn)轉(zhuǎn)十幾分鐘，帶風(fēng)容易將運(yùn)行器冷卻，再次起動就具備了條件。

河南全新液態(tài)起動設(shè)備有限公司資料 

Disadvantage: this type of starter is superior to other types. Its interior resistance value can be adjusted in light of on-site condition of voltage reduction, the startup electric current and electric quality. However, it has also a vital shortcoming: due to its small capacity, the interior storage capacity for liquid is quite limit, and when one time startup is failure, the motor will become hot swiftly, and once the temperature exceeds 65℃, the electric current will be larger than last time, sometime the trip will occur. At this moment, the start time shall have an interval. When the water temperature in starter cools down and then starts again. When electric motor runs for 10 minutes more, and the starter will be cooled down by air and the condition for restart of motor will be available.

Data provided by Henan Quanxin Liquid Startup Equipment Co.,Ltd