In order to improve performances of DC breakers, the electromagnetic repulsion mechanism for hybrid DC circuit breaker is researched in this paper.The dynamic model of electromagnetic repulsion mechan
对两相区锻造的Ti3Al合金棒材分别在1020和1150℃保温30 min,以10,1.5和0.3℃/s速度冷至室温,研究了冷速对Ti3Al合金组织和拉伸性能的影响.结果表明,在1020℃固溶,冷速为10℃/s时,合金主要由B2相和α2相组成;降低冷速,基体中均匀析出针状α2/O相;冷速为0.3℃/s,等轴α2/O相体积分数增加,针状α2/O相粗化.随着冷速下降,合金的室温强度先升高后下降,塑性先
Thermal Overload Relay is a typical product under multi-physics coupling condition.The principle is that bimetal deflects under the effect of electrical, thermal and mechanical, tripping the mechanism
In order to detect a mechanical type of structural failure of the circuit breaker, the characteristics of the circuit breaker mechanical vibration signal is analyzed in this paper.A combination of med
Relay, which is one of the most common components in the modern industry, is widely used in the power, lighting and safety systems of the space, industry, coal-mining and electric application and play
This paper is aimed to find an efficient simulation method to accurately simulate pre-arcing characteristics of quartz sand suse.The research can reveal the factors influencing the pre-arcing characte
Composite natural rubber foams prepared from vulcanization the natural rubber in sulfur curing system with sodium bicarbonate (NaHCO3) as foaming agent added 0, 20, 30, 40, and 50 phr of kaolinite (Al
The main goal of this study is to clarify the arc-characteristics with different surface and shape conditions and to acquire basic insights for designing way for appropriate electrode structure for ar
Both gas pressure buildup and post-arc current are vital factors to estimate the arc-quenching property of a circuit breaker.With a 126 kV puffer-type circuit breaker model designed and produced, expe
Break ares are generated in a DC100V-450V and 10A resistive circuit.Motion of arc spots on the anode and cathode surfaces is observed using a high-speed camera.The supply voltage and contact opening s