不同封装继电器在低气压下的介质耐压特性研究  

Study on Dielectric Voltage-Resistance of Different Package Relays under Low Pressure

作　　者：符佳佳 许艳君 李庆 闫玉波 李智 FU Jiajia;XU Yanjun;LI Qing;YAN Yubo;LI Zhi(Beijing Zhenxing Institute of Metrology&Measurement,Beijing 100074,China)

机构地区：[1]北京振兴计量测试研究所,北京100074

出　　处：《电子产品可靠性与环境试验》2024年第5期50-56,共7页Electronic Product Reliability and Environmental Testing

摘　　要：继电器作为重要的开关控制器件,其应用场景极其广泛,其中低气压环境是其重要应用场景之一。气压的下降会影响继电器的介质耐压特性,特别是在高电压应用条件下。研究了不同封装继电器在高电压下的极限应用低气压值,以及在5 kPa下贮存110 h对介质耐压特性的影响,为继电器在低气压的应用和选型提供了指导。结果显示,小电压下金属密封继电器的介质耐压特性与塑封继电器相近,当电压增大到一定程度后,塑封继电器的介质耐压特性优于金属密封继电器;长时间低压贮存后器件的介质耐压会出现退化,金属封装继电器的介质耐压比塑封继电器的介质耐压退化得更快;低气压试验过程存在器件的介质击穿和空气击穿这2个击穿路径。As an important switch control device,relay has a wide rang of application scenarios,among which low-pressure environment is one of its important application scenarios.The drop in air pressure can affect the dielectric voltage resistance of the relay,especially in high voltage applications.The limit application air low pressure value of different package relays under high voltage and the influence of 110 h storage at 5 kPa on the dielectric voltage-resistance is studied,which provides guidance for the application and selection of relays in low pressure.The results show that the dielectric voltage resistance of the metal-sealed relay is similar to that of the plastic-sealed relay under low voltage.When the voltage increases to a certain extent,the dielectric voltage-resistance of the plastic-sealed relay is better than that of the metal-sealed relay.The dielectric voltage resistance of the device will degrade after storage at low pressure for a long time,and the dielectric voltage resistance of the metal-encapsulated relay will degrade faster than that of the plastic seal.There are two breakdown paths during the low air pressure test,namely dielectric breakdown and air breakdown of the device.

关 键 词：继电器 低气压 介质耐压 

分 类 号：TM58[电气工程—电器]