成本低，強(qiáng)度高，耐摩擦，但成型性較差，縮水嚴(yán)重，由于熔化溫度較低，過波峰焊時(shí)會(huì)產(chǎn)生塑料熔化現(xiàn)象 [1]  各種電連接器是無數(shù)電子設(shè)備中的關(guān)鍵部件，因?yàn)樗鼈兌寄軌驅(qū)崿F(xiàn)并保護(hù)電信號(hào)的傳輸。從連接關(guān)鍵計(jì)算機(jī)元件到我們駕駛的汽車中的連接線，它們所扮演的角色非常廣泛，而且它們所服務(wù)的應(yīng)用程序也各不相同。盡管有的設(shè)計(jì)簡(jiǎn)單，但連接器通常在復(fù)雜的電氣系統(tǒng)中執(zhí)行。因此，連接器必須耐用且可靠，同時(shí)易于組裝和使用。雖然并非所有的電氣連接器都能夠承受環(huán)境下的使用，但是大量的連接器規(guī)格確保了可以為定制的設(shè)備找到合適的應(yīng)用類型。

在很多的行業(yè)中，需要使用連接器的時(shí)候都會(huì)給連接器鍍上一層特殊的鍍層，連接器使用了接觸鍍層不僅能減輕環(huán)境對(duì)連接器的腐蝕侵?jǐn)_，還能提高連接器的抗磨損能力和耐久性，它還能從電氣性能方面穩(wěn)定維持連接器阻抗。幫助提高和使用了鍍層連接器的產(chǎn)品質(zhì)量效果。
具體表現(xiàn)為以下幾點(diǎn)：1、給連接器鍍層有助于提高機(jī)械性能；2、給連接器鍍層能提高防腐蝕功能；3、給連接器鍍層有助于提高電氣性能；4、連接器鍍層還有使用普通金屬鍍層的特點(diǎn)；5、連接器鍍層還有使用貴金屬鍍層的特點(diǎn)等。軟啟動(dòng)器采用三相反并聯(lián)晶閘管作為調(diào)壓器，用這種電路如三相全控橋式整流電路，使用軟啟動(dòng)器啟動(dòng)電動(dòng)機(jī)時(shí)，晶閘管的輸出電壓逐漸增加，電動(dòng)機(jī)逐漸加速，直到晶閘管全導(dǎo)通，電動(dòng)機(jī)工作在額定電壓的機(jī)械特性上，實(shí)現(xiàn)平滑啟動(dòng)，降低啟動(dòng)電流，避免啟動(dòng)過流跳閘，將其接入電源和電動(dòng)機(jī)定子之間。

Low cost, high strength, friction resistance, but poor formability and serious shrinkage. Due to the low melting temperature, plastic melting will occur during wave soldering [1] various electrical connectors are key components in countless electronic equipment, because they can realize and protect the transmission of electrical signals. From connecting key computer components to connecting wires in the cars we drive, they play a wide range of roles, and they serve different applications. Although some designs are simple, connectors are usually implemented in complex electrical systems. Therefore, the connector must be durable and reliable, and easy to assemble and use. Although not all electrical connectors can withstand environmental use, a large number of connector specifications ensure that suitable application types can be found for customized equipment.
In many industries, the connector will be plated with a special coating when it needs to be used. The contact coating used in the connector can not only reduce the corrosion and interference of the environment on the connector, but also improve the wear resistance and durability of the connector. It can also stabilize the connector impedance from the aspect of electrical performance. It helps to improve and use the product quality effect of plated connectors.
The specific performance is as follows: 1. Coating the connector helps to improve the mechanical properties; 2. Coating the connector can improve the anti-corrosion function; 3. Coating the connector helps to improve the electrical performance; 4. The connector coating has the characteristics of using ordinary metal coating; 5. The connector coating also has the characteristics of using precious metal coating. The soft starter adopts three-phase anti parallel thyristor as the voltage regulator. With this circuit, such as three-phase fully controlled bridge rectifier circuit, when the soft starter is used to start the motor, the output voltage of the thyristor gradually increases, and the motor gradually accelerates until the thyristor is fully connected, and the motor works on the mechanical characteristics of the rated voltage to realize smooth starting, reduce the starting current, and avoid starting overcurrent tripping, Connect it between the power supply and the motor stator.