【经验】浅谈单相交流电防雷电路设计
随着国家电网的飞速发展,居民用电对电网质量要求越来越高,尤其是防雷这块。每当雷雨季节,就会出现雷击导致家用电器损坏的现象。本文针对居民用电的单相交流电,结合LITTELFUSE的防护器件讨论一下几种单相交流电的防雷设计电路。
图1是一款最简单的单相交流电防雷器设计,其优点是电路简单,采用复合对称电路,共模差模全保护,火线零线随便接。其缺点是压敏电阻RV1短路失效后,短路电流过大导致导线发热严重,容易引起火灾。
图1 简单的单相交流电防雷器设计示意图
针对图1的问题,设计出如图2的较安全防雷器设计电路,其优点采用复合对称电路,共模差模全保护,火线零线随便接,正常工作是无漏电流,可以延长器件使用寿命,由于陶瓷气体放电管失效模式大多为开路模式,不易引起火灾。其缺点是万一人为因素导致压敏电阻和陶瓷气体放电管都短路失效,也容易引起火灾。
图2 较为安全的单相交流电防雷器设计示意图
结合图1和图2设计的优缺点,设计如图3的通用单相交流电防雷器保护电路,优点采用复合对称电路,共模差模全保护,火线零线随便接,安全,压敏电阻短路失效后,由于保险管的存在,能与电路脱离,一般不会引起火灾。
图3 通用单相交流电防雷器设计示意图
针对器件选型,防护专家品牌Littelfuse为其提供了全面的防护器件选型,交流电防护压敏电阻选型,压敏电阻的电压值参考如图4所示,选压敏电压高一点的更安全,耐用,故障率低,但残压略高。推荐Littelfuse的C-III系列压敏电阻,宽工作电压范围130VAC-1000VAC,主要用于交流线路电涌防护。
图4 单相交流电压敏电阻选型参考示意图
陶瓷气体放电管的通流容量根据要求的通流容量选择,直流击穿电压为470V-600V。当要求的通流容量≤3000A时,可以用玻璃放电管代替。推荐Littelfuse的AC系列中高压放电管,其单此最高承受10KA浪涌电流,满足交流电浪涌防护需求。
以上便是单相交流电防雷电路设计一些总结,如有疑问,欢迎在世强电商平台留言。
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Littelfuse(力特) 气体放电管(GDTs)数据手册
型号- GTCR37-401M-R10,GTCN28-750M-R05,GTCS23-231M-R01-2,GTCA28-231L-R05,GTCN35-471M-R05,GTCS36-551M-R05-2,GTCS36-351M-R10-2,GTCS25-201M-R02,GTCA25-261M-R02,GTCS26-231M-R05,GTCS25-601M-R02,GTCC23-141M-R01,GTCS28-421M-R10-2,GTCS36-501M-R10-2,GTCS38-421M-R10-2,GTCS26-231M-R05-2,GTCS35-261M-R05,GTCN37-351M-R10,GTCS36-231M-R05-2,GTCT35-141M-R05,GTCN25-141M-R02,GTCS26-551M-R05-2,GTCC23-231M-R01-2,GTCS26-501M-R05,GTCS38-601M-R10-2,GTCN38-601M-R10,GTCN38-201M-R10,GTCS36-201M-R05-2,GTCS26-201M-R05-2,GTCR37-261M-R10-FS,GTCS28-601M-R10-2,GTCS35-401M-R05,GTCA38-401M-R10-FS2,GTCS28-301M-R20,GTCN28-750M-R10,GTCR37-750M-R10,GTCA35-201M-R05,GTCA35-900M-R05,GTCS36-261M-R05-2,GTCN35-551M-R05,GTCR37-421M-R10-FS,GTCN28-401M-R10,GTCA35-601M-R05,GTCS26-261M-R05-2,GTCS23-750M-R01,GTCN25-900M-R02,GTCS23-201M-R01-2,GTCN38-900M-R10,GTCA35-141M-R05,GTCN35-151M-R05,GTCA35-551M-R05-FT,GTCN28-750M-R20,GTCA25-401M-R02,GTCA38-401M-R10,GTCN28-801M-R05,GTCS28-750M-R05,GTCA36-231M-R05,GTCA25-471M-R02,GTCN28-401M-R05,GTCX35-XXXM-R05,GTCS38-231M-R10,GTCN38-251M-R10,GTCR37-261M-R10,GTCS26-151M-R05,GTCS26-551M-R05,GTCA35-351M-R05,GTCS38-501M-R10,GTCR37-471M-R10,GTCA28-900M-R10,GTCN26-201M-R05,GTCN26-501M-R05,GTCA38-261M-R10,GTCS38-201M-R10,GTCR37-501M-R10-FS,GTCS25-141M-R02,GTCA26-351M-R05,GTCC23-201M-R01,GTCA28-231M-R10,GTCA28-231M-R05,GTCS28-351M-R10,GTCN28-261M-R20,GTCN35-401M-R05,GTCS36-141M-R10-2,GTCR37-471M-R10-FS,GTCA28-900M-R20,GTCT35-900M-R05,GTCT35-351M-R05,GTCN25-601M-R02,GTCS35-471M-R05,GTCA35-351M-R05-FT,GTCS36-421M-R10-2,GTCA28-231M-R20,GTCS28-351M-R05,GTCS28-351M-R20-2,GTCS36-151M-R05-2,GTCC23-351M-R01,GTCA28-601M-R10,GTCS28-401M-R05,GTCA36-501M-R05,GTCS28-501M-R10-2,GTCT35-601M-R05,GTCN37-900M-R10,GTCS35-151M-R05,GTCS36-301M-R05-2,GTCS26-251M-R05,GTCS23-750M-R01-2,GTCN25-351M-R02,GTCS36-301M-R05,GTCA28-251M-R10,GTCA36-421M-R05,GTCS35-750M-R05,GTCS36-601M-R10-2,GTCA28-302M-R03,GTCN28-301M-R10,GTCN35-421M-R05,GTCN26-151M-R05,GTCA28-242M-R03,GTCN37-301M-R10,GTCA26-401M-R05,GTCC23-201M-R01-2,GTCN28-261M-R05,GTCN36-750M-R10,GTCA28-601M-R05,GTCS28-401M-R10,GTCS38-421M-R10,GTCA28-251M-R05,GTCX36-XXXM-R05,GTCA28-251M-R20,GTCS23-301M-R01,GTCS36-261M-R05,GTCS35-501M-R05,GTCA36-151M-R05,GTCA25-551M-R02,GTCA28-900M-R05,GTCN37-251M-R10,GTCN28-301M-R20,GTCS26-471M-R05,GTCS36-900M-R05-2,GTCS38-151M-R10,GTCN36-750M-R05,GTCN38-231M-R10-FT,GTCN28-551M-R05,GTCA36-201M-R05,GTCN26-141M-R05,GTCN26-421M-R05,GTCS28-351M-R20,GTCN28-261M-R10,GTCS36-301M-R10,GTCX36-XXXM-R10,GTCN36-231M-R10-FT,GTCA36-141M-R05,GTCS38-231M-R10-2,GTCS28-141M-R05,GTCA28-141M-R20,GTCS35-231M-R05,GTCS36-421M-R05-2,GTCS25-301M-R02,GTCR36-351M-R10-FT,GTCN36-421M-R05,GTCN28-351M-R10,GTCR37-351M-R10-FS,GTCA25-231M-R02,GTCS26-900M-R05,GTCN28-421M-R10,GTCA28-551M-R05,GTCN28-421M-R05,GTCA28-601L-R20,GTCC23-421M-R01-2,GTCS36-251M-R10-2,GTCS36-201M-R10,GTCS36-900M-R10,GTCN36-351M-R05,GTCA28-252M-R03,GTCA28-312L-R03,GTCX26-XXXM-R05,GTCS36-601M-R10,GTCN28-351M-R20,GTCN36-421M-R10,GTCN28-501M-R05,GTCN38-351M-R10,GTCS28-141M-R10,GTCS28-141M-R10-2,GTCN38-551M-R10,GTCA38-141M-R10,GTCA28-551M-R10,GTCS23-151M-R01,GTCN28-471M-R10,GTCN28-501M-R10,GTCN36-351M-R10,GTCR37-551M-R10,GTCA35-301M-R05,GTCN26-351M-R05,GTCS28-261M-R10,GTCS28-201M-R10-2,GTCN37-201M-R10,GTCN37-601M-R10,GTCS38-351M-R10,GTCS38-351M-R10-2,GTCS25-351M-R02,GTCS28-201M-R10,GTCR37-151M-R10,GTCS26-141M-R05,GTCS28-141M-R20,GTCS28-141M-R20-2,GTCA25-301M-R02,GTCA38-301M-R10,GTCT35-251M-R05,GTCN36-301M-R05,GTCS25-231M-R02,GTCS26-601M-R05,GTCN35-750M-R05,GTCS35-421M-R05,GTCT35-301M-R05,GTCN28-471M-R05,GTCS36-471M-R05-2,GTCS28-261M-R20,GTCS36-201M-R10-2,GTCN28-351M-R05,GTCR37-900M-R10-FS,GTCS36-750M-R05-2,GTCN38-421M-R10,GTCS26-750M-R05-2,GTCS35-301M-R05,GTCA36-471M-R05,GTCS36-601M-R05-2,GTCS28-201M-R20,GTCS26-201M-R05,GTCA26-750M-R05,GTCN36-261M-R05,GTCN35-601M-R05,GTCN35-501M-R05,GTCA28-201M-R10,GTCN26-301M-R05,GTCA36-601M-R05,GTCC23-301M-R01,GTCS38-301M-R10,GTCA26-551M-R05,GTCN25-750M-R02,GTCA35-251M-R05,GTCR37-141M-R10,GTCC23-XXXM-R01-2,GTCA35-151M-R05,GTCS28-251M-R10,GTCN35-900M-R05,GTCC23-900M-R01-2,GTCN36-401M-R10,GTCN36-301M-R10,GTCA28-362M-R03,GTCA36-900M-R05,GTCS38-401M-R10-2,GTCS36-151M-R05,GTCN26-231M-R05,GTCS26-401M-R05-2,GTCA28-201M-R05,GTCR37-141M-R10-FS,GTCA28-151M-R20,GTCT35-151M-R05,GTCR37-750M-R10-FS,GTCS23-XXXM-R01-2,GTCS23-201M-R01,GTCN38-471M-R10,GTCC23-231M-R01,GTCA28-201M-R20,GTCT35-201M-R05,GTCS23-900M-R01-2,GTCA38-231M-R10,GTCS38-750M-R10-2,GTCN36-261M-R10,GTCR37-551M-R10-FS,GTCN36-401M-R05,GTCA26-601M-R05,GTCS28-251M-R20,GTCS26-151M-R05-2,GTCS35-351M-R05,GTCS28-261M-R05,GTCC23-301M-R01-2,GTCA26-900M-R05,GTCA28-151M-R10,GTCT35-231M-R05,GTCS36-151M-R10,GTCS28-231M-R05,GTCA25-141M-R02,GTCN37-141M-R10,GTCS28-231M-R10,GTCS28-261M-R10-2,GTCN26-251M-R05,GTCA28-402M-R03,GTCS38-251M-R10,GTCS23-141M-R01,GTCS25-251M-R02,GTCS36-141M-R10,GTCS28-301M-R10,GTCA28-151M-R05,GTCA26-471M-R05,GTCS36-201M-R05,GTCA38-201M-R10,GTCS36-551M-R10-2,GTCS23-301M-R01-2,GTCA38-151M-R10,GTCA25-201M-R02,GTCS28-231M-R20,GTCN38-501M-R10,GTCA25-151M-R02,GT
压敏电阻器 (CQC) 产品认证证书 (CQC21001319369)
型号- V11X210E□□□□,V11X460E□□□□,V11X300E□□□□,V11X550E□□□□,V11X385E□□□,V11X625E□□□□,V11X350E□□□□,V11X510E□□□□,V11X420E□□□□,V11X320E□□□□,V11X140E□□□□,V11X275E□□□□,V11X330E□□□□,V11X150E□□□□,V11X195E□□□□,V11X250E□□□□,V11X130E□□□□,V11X175E□□□□,V11X230E□□□□,V11X440E□□□□,V11X680E□□□□
【应用】符合车规认证的AUMOV系列压敏电阻为车载OBC保驾护航
车载OBC又称车载交流充电机,安装于电动汽车上,通过插座和电缆与交流插座连接,以三相或者单相交流电源向汽车提供电源;车载OBC的优点是不管车载电池在任何时候,任何地方需要充电,只要有充电机额定电压的交流插座,就可以对电动汽车进行充电。由于接的是电网电压,因此需要对OBC输入端进行防雷设计,本文简述了Littelfuse的AUMOV系列压敏电阻在车载OBC上的防雷设计应用。车载OBC输入一般以电网电
电子商城
品牌:LITTELFUSE
品类:THERMALLY PROTECTED VARISTOR
价格:¥7.9088
现货: 23,887
品牌:LITTELFUSE
品类:Surface Mount Multilayer Varistors
价格:¥0.3580
现货: 5,000
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服务
加工精度:精密平面磨床正负0.002;铣床正负0.02,ZNC放电正负0.01。CNC加工材料:铝、钢、聚合物等材料。专注于半导体行业、医疗器械、汽车行业、新能源行业、信息技术行业零部件加工。
最小起订量: 1个 提交需求>
昆山清安实验室拥有150L/1000L-定容气体试验舱,提供热失控产气特征测试,包括电池氛围加热测试、电池加热板加热测试、锂电池定容气体试验舱气体分析测试、电池过充测试、电池加热板加热测试等。
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