成本低，強度高，耐摩擦，但成型性較差，縮水嚴重，由于熔化溫度較低，過波峰焊時會產生塑料熔化現象 [1]  各種電連接器是無數電子設備中的關鍵部件，因為它們都能夠實現并保護電信號的傳輸。從連接關鍵計算機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，而且它們所服務的應用程序也各不相同。盡管有的設計簡單，但連接器通常在復雜的電氣系統(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備找到合適的應用類型。

在很多的行業(yè)中，需要使用連接器的時候都會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)境對連接器的腐蝕侵擾，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品質量效果。
具體表現為以下幾點：1、給連接器鍍層有助于提高機械性能；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；5、連接器鍍層還有使用貴金屬鍍層的特點等。軟啟動器采用三相反并聯(lián)晶閘管作為調壓器，用這種電路如三相全控橋式整流電路，使用軟啟動器啟動電動機時，晶閘管的輸出電壓逐漸增加，電動機逐漸加速，直到晶閘管全導通，電動機工作在額定電壓的機械特性上，實現平滑啟動，降低啟動電流，避免啟動過流跳閘，將其接入電源和電動機定子之間。

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.