Analysis and Calculation of the Allowed Values of Contact Pressure in the Process of Circuit Breaker Closing Work

Abstract:

Based on the analysis of forces on the circuit breaker operator and its component in any instant position during the slow closing work process, this essay applies Friction Circle Theory, Disconnecting Pairs Method and Balance Conditions of Shared Surface Power System and calculates the allowed values of contact pressure in any instant position. This essay also reaches a conclusion that in any instant position in the process of operating device slow closing work, the real value of contact pressures should be less than the allowed value of contact pressure on this position to guarantee that the slow closing work process of the circuit breaker operator is qualified.

• Periodical: Applied Mechanics and Materials (Volumes 130-134)
• Pages: 1214-1219
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.130-134.1214
• Online since: October 2011
• Authors: Xin Quan Ye, Tao He
• Keywords: Allowed Value of Contact Pressure, Circuit Breaker Quality Control, Contact Operator, Slow Closing Work

References

[1] Chen Xu, Chen Degui. Research on Simulation of the Interruption of Low-voltage Circuit Breaker[J]. Transactions of China Electrotechnical Society, vol. 5, P46–50, (2001).

[2] Wan Changjiang, Tang Jianrong, Liu Zhenyu. Research on Motion Simulation Based on Solid and Skeleton Hybrid Model under Virtual Environment[J]. China Mechanical Engineering, vol. 8, P706–711, (2005).

[3] Miao Hongxia, Wang Honghua, Qi Bensheng. Research on Dynamic Modeling and Simulating of Operating Mechanism of High-voltage Circuit Breaker[J]. Computer Engineering and Applications, vo17, P707–711, (2010).

DOI: 10.1109/iccasm.2010.5623219

[4] Jiang Changhua, JI Weixi. Dynamics Simulation and Parametric Design of Molded Case Circuit Breaker Operating Mechanism[J]. China Mechanical Engineering, vol. 8, P707–711, (2010).

[5] Zhou Huigao, Yang Taoli, Zhao Duanqing, Li Zhongting, Lu Ming. Elem Entary Introduction to the Temperature-rise Test and the M echanical Test of Hvswitchgear[J]. High Voltage Apparatus, vol. 8, P707–711, (2010).

[6] Zhang Jingshu, Chen Degui, Liu Hongwu. Dynamic Simulation and Optimum Design of Low-Volvage Circuit Breaker [J]. Proceedings of the Csee, vol. 8, P707–711, (2010).

[7] Wang Qiping. Arc theory of Electric Apparatus[M]. Beijing: China Machine Press, (1991).

[8] Fang Hongfa, Chen Degui, Yuan Chongjun. Low Voltage Apparatus and Test Technology[M]. Beijing: China Machine Press, (1981).