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    1. 深圳市全業電子有限公司歡迎您!

      全業電子方案:AC220V電源防護方案

      作者:admin????來源:未知????發布時間:2020-07-27 08:53????瀏覽量:
      一、應用背景
      1. 全球氣候變暖,雷雨天氣增多
      2. 電源雷擊損壞后,危害大
      3. 電源雷擊損壞后,維修成本高
      4. 高浪涌防護設備成為行業趨勢


      二、防護方案與全業電子保護器件
      AC220V電源防護方案

      陶瓷氣體放電管

      GDT【UN2E5-600LL】直流標稱電壓600±20%V,沖擊電流(8/20μS)5KA,電容值<1pF,電阻值>1GΩ,防護等級為中防護等級

      GDT【UN2E8-600ML】直流標稱電壓600±20%V,沖擊電流(8/20μS)10KA,電容值<1pF,電阻值>1GΩ,防護等級為高防護等級

      GDT【UN2H8-3500LL】直流標稱電壓3500±20%V,沖擊電流(8/20μS)5KA,電容值<1pF,電阻值>1GΩ,為AC1500絕緣耐壓

      壓敏電阻

      MOV1/MOV2/MOV3【14D561K】壓敏電壓(at1mA):504V-616V,突波電流耐量(8/20μS):4500A,最大抑制電壓(at5A):925V,防護等級為中防護等級

      MOV1/MOV2/MOV3【20D561K】壓敏電壓(at1mA):504V-616V,突波電流耐量(8/20μS):6500V,最大抑制電壓(at5A):925V,防護等級為高防護等級


      三、方案應用

      1、LED 路燈電源

      2、交換機電源

      3、空調電源

      4、逆變器電源

      5、電腦電源

      6、電磁爐/電飯煲

      7、其它AC94V-AC264V 電源


      四、方案說明與注意事項

      1、此電源方案滿足IEC61000-4-5、GBT17626.5 等浪涌測試標準

      2、在差模中,采用鉗位性器件MOV,響應時間快,降低L和N線之間的浪涌電壓

      3、在共模防護中,采用MOV 和GDT 串聯到PCB 地或者設備外殼,阻止MOV 的漏電流滿足安規要求

      4、此電源方案可通過1.2/50-8/20μS 組合波差模、共模6.0KV 浪涌測試

      注:在有結緣等級耐壓測試AC1500V 要求時,GDT 建議換成DC3500V電壓

      如需更多幫助,請點擊在線客服咨詢,我們將竭誠為您服務!

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