基于GB、IEC、UL标准的比对及直流低压熔断器分断能力试验方法研究  

Study on Breaking Ability Testing Method of DC Low-Voltage Fuse Based on Comparison of GB,IEC and UL Standards

作　　者：赵婧 李赛赛 白承宗 郭向荣 ZHAO Jing;LI Saisai;BAI Chengzong;GUO Xiangrong(Guangdong Institution of Standardization,Guangzhou 510220,China;Guangdong Testing Institute of Product Quality Supervision,Guangzhou 510220,China)

机构地区：[1]广东省标准化研究院,广东广州510220 [2]广东产品质量监督检验研究院,广东广州510220

出　　处：《电器与能效管理技术》2023年第12期71-76,共6页Electrical & Energy Management Technology

基　　金：广东省重点领域研发计划项目(2020B0404020003)。

摘　　要：为了研究GB、IEC、UL标准的差异对低压熔断器分断能力检测上的影响,比对了标准适用对象、分断能力限值、分断能力试验方法等条款,发现在小过电流试验上存在较大差异。分别按GB、IEC、UL标准进行不同预期试验电流、切换时间、预热方法条件下小过电流分断试验,结果显示:熔断器的弧前时间-预期试验电流的曲线在不同预期试验电流下基本重合;交流或直流预热方式测得的弧前时间、分断电压、初始电压基本一致;不同切换时间延长了全压电路时间,但不影响燃弧过程和恢复电压的测试结果。In order to study the impact of differences between GB,IEC,and UL standards on the detection of the breaking capacity of low-voltage fuses,the applicable objects,breaking capacity limits,and breaking capacity testing methods of standards were compared.It was found that there were significant differences in small overcurrent tests.According to GB,IEC,and UL standards,small overcurrent breaking tests were conducted under different expected testing currents,switching times,and preheating methods.The results showed that the curve between the pre-arcing time of the fuse and the expected testing current basically coincided under different expected testing currents.The pre-arcing time,breaking voltage and initial voltage measured by AC or DC preheating are basically consistent.Different switching times prolong the full voltage circuit time,but not affect the arcing process and the testing results of the recovery voltage.

关 键 词：GB标准 IEC标准 UL标准 直流低压熔断器 分断能力试验 

分 类 号：TM93[电气工程—电力电子与电力传动]