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    電連接器專業測試



    1、電連接器的基本性能有哪些?

    答:電連接器有三個基本性能:機械性能,電氣特性,耐環境性能。

    2、電連接器機械性能測試包括哪些?

    答:包括:插拔力測試,端子保持力測試,端子正向力測試,耐久性測試。

    3、電連接器電氣特性測試包括哪些?

    答:包括:絕緣電阻測試,耐電壓測試,低電平電阻測試(LLCR),電容及電感量測,溫升測試。

    4、電連接器耐環境性能測試有哪些?

    答:包括:鹽霧測試,振動測試,沖擊測試,冷熱沖擊測試,高溫測試,溫濕度組合循環測試,耐焊錫熱試驗等等。

    5、什么是接觸電阻?

    答:在接觸連接的導體表面間相互壓緊時,接觸層間所存在的電阻。

    6、什么是絕緣電阻?

    答:絕緣物在規定條件下的直流電阻。絕緣電阻是電氣設備和電氣線路最基本的絕緣指標。

    7、什么是耐電壓測試?

    答:將一規定的交流或直流高壓施加在電器帶電部分和非帶電部分(一般為外殼)之間以檢查電器的絕緣材料所能承受耐壓能力的試驗。

    8、絕緣電阻測試與耐電壓測試的區別?

    答:耐電壓測試主要考慮絕緣材料在多高的電壓下被擊穿,從而會失去其的保護能力,導致人員傷亡。驗證的是絕緣材料耐高壓的能力,主要針對電壓而言。絕緣電阻測試主要考慮在一定電壓下絕緣材料的電阻為多大,是否能夠防止因為電流過大而導致人身安全受到傷害。主要針對電流而言。

    9、為什么要測量低電平接觸接觸電阻?

    答:在不破壞端子表面的氧化薄膜條件下,測試結合兩端子間的接觸電阻,以作為連接器端子之總體性評估。低電平接觸電阻越小越好。

    10、接觸電阻測試儀設備參數?

    答:測試電壓:20mV max測試電流:1μA~10mA可調電阻測試范圍:10μΩ~100KΩ。

    11、絕緣電阻測試儀設備參數?

    答:測試電壓:25VDC~1000VDC,測試電阻:0、01MΩ~5000MΩ,測試時間:0、0~90、0s可調。

    12、為什么要進行電連接器的溫升測試?

    答:評估端子在規定的時間內通過規定的額定電流時,其溫升是否超過規定值,從而影響連接器相關性能。

    13、為什么要對連接器進行插拔力測試?

    答:用于評估端子插入和拔出時所需要的力大小及連接器外殼的防護能力。一般要求插入力較小,拔出力較大。

    14、為什么要對連接器進行耐久性測試?

    答:評估連接器經連續插拔后,其端子電鍍層磨耗程度或插拔前后連接器電氣特性與機械特性的變化。

    15、為什么要對連接器進行振動測試?

    答:評估連接器耐振持久性,確認連接器是否因夾持力太松,以致于振動過程中造成瞬時斷電現象,及因振動而發生接觸點腐蝕氧化現象而造成阻值變化。

    16、為什么要對連接器進行沖擊測試?

    答:模擬連接器在承受運輸途中或其他因素發生突發沖擊狀況時,對產品接觸功能性的影響。

    17、為什么要對連接器進行冷熱沖擊測試?

    答:評估電子元件在急速的大溫差變化條件下,對于其功能品質的影響。

    18、為什么要對連接器進行高溫壽命試驗?

    答:評估連接器暴露在高溫環境于規定時間后端子及塑膠應力是否有弛緩現象,及其他影響產品品質的因素存在。

    19、為什么要對連接器進行溫濕度組合循環測試試驗?

    答:評估連接器在經高溫高濕之環境儲存后對產品電氣特性的影響及在連接器在高溫高濕環境里的操作可能性。

    20、為什么要對連接器進行氣體腐蝕測試?

    答:評估連接器金屬配件及端子鍍層對抗不同氣體腐蝕的能力,及對電氣和機械性能的影響。

    21、常用的電連接器測試標準有哪些?

    答:常用的電連接器的測試標準有

    EIA-364電連接器的相關測試方法標準;

    IEC 60512電子設備用連接器基本試驗程序和測試方法系列標準;

    IEC 61076電子設備用連接器系列標準。

    22、什么是連接器?

    答:通俗的說,連接器就是將兩種或兩種以上的物件連接到一塊的媒介。廣義來說,連接器可以是硬件,如插座、手機插孔等,也可是軟件,如編程用到的中間件等等。

    23、什么是電連接器?

    答:電連接器也可稱為插頭座,廣泛應用于各種電氣線路中,起著連接或斷開電路的作用。

     

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