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              塑殼斷路器怎樣避免和接觸器發生線頭故障

              來源:http://www.cekidots.com/ 日期:2021-07-30 發布人:tongjid

              塑殼斷路器是能夠在電流超過跳脫設定后自動切斷電流的一種電氣設備。塑殼指的是使用塑料絕緣體來作為設備的外殼,來隔離導體之間以及接地金屬的部分。塑殼斷路器會含有熱磁跳脫單元,大型號的斷路器會配備固態跳脫傳感器。常用的斷路器額定電流有以下幾種:60、75、80/100/126/160/200A等等。

              Molded case circuit breaker is an electrical equipment that can automatically cut off the current after the current exceeds the trip setting. Plastic shell refers to the use of plastic insulator as the shell of equipment to isolate the parts between conductors and grounding metal. Molded case circuit breakers will contain thermal magnetic trip units, and large models of circuit breakers will be equipped with Solid-state trip sensors. The rated current of common circuit breakers are as follows: 60, 75, 80 / 100 / 126 / 160 / 200A, etc.
              在使用斷路器時,經常會遇到接觸器和斷路器線接好了卻不通電,在沒有測試的情況下拿去用,就會導致電路出現故障。很多人都懷疑這樣的原因是產品出了問題,其實是因為我們在接線的方式上出了問題,導致產品缺相或產生了相間短路的情況。下面跟大家介紹一下正確的接線方式。
              When using the circuit breaker, it is often encountered that the contactor and circuit breaker wires are connected but not energized. If they are used without testing, the circuit will fail. Many people suspect that the reason is that there is a problem with the product. In fact, there is a problem with our wiring method, resulting in phase loss or phase-to-phase short circuit. Let's introduce the correct wiring mode.
              1、引線
              1. Lead
              要避免這樣的情況發生,首先,我們在接線前要選擇合適的引線,使用單股銅線,如果沒有,使用多股軟銅線,用錫將線頭焊接在一起,形成單股線。這樣做的目的就是防止多股銅線漏出產生短路狀況。
              To avoid such a situation, first of all, we should select appropriate leads and use single strand copper wire before wiring. If not, use multiple strands of soft copper wire and solder the wire ends together with tin to form a single strand wire. The purpose of this is to prevent the leakage of multiple strands of copper wires from causing short circuit.
              2、接線方式
              2. Wiring mode
              接線方式都采用線框方式接線,這樣做的好處是先不會像用1字型接線方式那樣會產生內部觸頭發生側滑,如果直接壓在接線框的旁邊,在擰緊螺絲的時候就容易造成靜觸點位移,導致斷路器接觸不良。
              The wiring mode adopts wireframe wiring. The advantage of this is that the internal contact will not slip like the 1-shaped wiring mode. If it is directly pressed next to the wiring frame, it is easy to cause the displacement of the static contact when tightening the screws, resulting in poor contact of the circuit breaker.
              3、螺絲選擇
              3. Screw selection
              接觸器采用螺絲帽壓片壓線,螺絲壓片都是^型的,做成這樣的原因是當螺絲往下擰的時候壓片就會向下壓緊引線,也會讓產品在接線的時候有一個平衡點,接線也不會出現壓不緊的情況,降低了故障率。
              The contactor adopts screw cap pressing plate to press the wire. The screw pressing plate is of ^ type. The reason for this is that when the screw is screwed down, the pressing plate will press the lead downward, which will also give the product a balance point during wiring, and the wiring will not be too tight, reducing the failure rate.


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