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1. 发明公开

EP2591485A1 AN IMPROVED ARC CHAMBER ASSEMBLY FOR USE IN MOULDED CASE CIRCUIT BREAKERS 审中-公开
标题翻译： VERBESSERTE LICHTBOGENKAMMERANORDNUNG ZUR VERWENDUNGFÜRKOMPAKTLEISTUNGSSCHALTER
公开(公告)号：EP2591485A1
公开(公告)日：2013-05-15
申请号：EP11749512.7
申请日：2011-07-06
申请人： Larsen & Toubro Limited
发明人： DEGDA, Nayan, B. , NIMANI, Mukesh, L. , CHATURVEDI, Amit
IPC分类号： H01H9/34
CPC分类号： H01H33/02 , H01H9/342 , H01H9/346 , H01H2009/348
摘要： The present invention relates to an improved arc chamber/chute assembly in a circuit breaker for effective channelization of hot ionized gases through said arc chamber to enhance breaking capacity in circuit breakers. The assembly comprises back vent secured inside said arc chute assembly and front vent secured inside the assembly placed between the back vent and arc chute plates of the assembly. The front vent comprises a substantially T-shaped profile having a substantially horizontal portion along X-axis and a substantially vertical portion along Y-axis so as to define a substantially divergent nozzle profile in the said T- shaped profile such that at the time of high fault conditions in said arc chamber nozzle effect is generated due to high pressure build up in arc chamber assembly.
摘要翻译：本发明涉及一种在断路器中的改进的电弧室/滑槽组件，用于通过所述电弧室有效地使热电离气体通道化，以增强断路器的分断能力。组件包括固定在所述电弧槽组件内的后排通风口，以及固定在组件的背部通气孔和弧形溜槽板之间的组件内部的前通风口。前排气口包括基本上T形的轮廓，其具有沿X轴的基本上水平的部分和沿着Y轴的基本上垂直的部分，以便在所述T形轮廓中限定出基本上发散的喷嘴轮廓，使得在由于电弧室组装中的高压累积，产生了所述电弧室喷嘴效应中的高故障状况。

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