7Luo Yanyan, Lu Jianguo, Li Zhigang. Study of reliability test and analysis for miniature circuit breakers[C]. The Proceedings of 48th IEEE Holm Electrical Contacts Conference, 2002: 80-85.
8Li Kui, Wang Jinqin, Li Wenhua, et al. Study on reliability for overload relay[C]. Proceedings of the 1st International Conference on Reliability of Electrical Products and Electrical Contacts, 2004:228-232.
9Billinton R, et al. Determination of the optimum routine test and self-checking intervals in protective relaying using a reliability model[J]. IEEE Transactions on Power Systems, 2002, 17(3): 662-669.
