This paper analyzed the reliability and put forward the reliability index of overload protection for moulded case circuit breaker. The success rate was adopted as its reliability index of overload protection. Based on...This paper analyzed the reliability and put forward the reliability index of overload protection for moulded case circuit breaker. The success rate was adopted as its reliability index of overload protection. Based on the reliability index and the reli- ability level, the reliability examination plan was analyzed and a test device for the overload protection of moulded case cir- cuit-breaker was developed. In the reliability test of overload protection, two power sources were used, which reduced the time of conversion and regulation between two different test currents in the overload protection test, which made the characteristic test more accurate. The test device was designed on the base of a Windows system, which made its operation simple and friendly.展开更多
为了解决高温恶劣环境下压力测量问题,设计了一种大压力、高过载、耐高温、耐恶劣环境的小体积压差传感器。通过有限元分析对传感器绝缘体上硅(silicon on insulator,SOI)压力敏感膜片结构进行优化设计,使其能够满足恶劣环境的使用要求...为了解决高温恶劣环境下压力测量问题,设计了一种大压力、高过载、耐高温、耐恶劣环境的小体积压差传感器。通过有限元分析对传感器绝缘体上硅(silicon on insulator,SOI)压力敏感膜片结构进行优化设计,使其能够满足恶劣环境的使用要求。通过试验证明这种压差传感器具有良好的耐高温、耐恶劣环境的特性。展开更多
基金Project (No. E2005000039) supported by the Natural Science Foun-dation of Hebei Province, China
文摘This paper analyzed the reliability and put forward the reliability index of overload protection for moulded case circuit breaker. The success rate was adopted as its reliability index of overload protection. Based on the reliability index and the reli- ability level, the reliability examination plan was analyzed and a test device for the overload protection of moulded case cir- cuit-breaker was developed. In the reliability test of overload protection, two power sources were used, which reduced the time of conversion and regulation between two different test currents in the overload protection test, which made the characteristic test more accurate. The test device was designed on the base of a Windows system, which made its operation simple and friendly.
文摘为了解决高温恶劣环境下压力测量问题,设计了一种大压力、高过载、耐高温、耐恶劣环境的小体积压差传感器。通过有限元分析对传感器绝缘体上硅(silicon on insulator,SOI)压力敏感膜片结构进行优化设计,使其能够满足恶劣环境的使用要求。通过试验证明这种压差传感器具有良好的耐高温、耐恶劣环境的特性。
