一种倒进线剩余电流保护断路器的优化设计

Optimal Design for Lower Incoming Wiring of Residual Current Protection Circuit Breaker

为了解决剩余电流保护断路器在倒进线使用场景下易烧损的问题,分析了控制器的工作原理,指出了剩余电流保护断路器倒进线下的设计不足,并提出了两种设计改进方案。经样机测试和验证,结果表明达到了优化设计改进的目的,为产品在市场端能够可靠运行给出了最佳解决方案。

In order to solve the problem that the residual current protection circuit breaker is easy to burn and cannot work reliably in the reverse wiring scenario,this paper analyzed the working principle of the residual current protection controller when the circuit breaker is lower incoming wiring.Comparing the differences between the upper incoming wiring and lower incoming wiring,and recognizing the insufficient design of the residual current protection circuit breaker on lower incoming wiring,two design improvements were proposed.Additional prototype testing and verification before and after improvement were done.The results show that the purpose of optimizing the design and improvement is achieved,which provides the best solution for the product to operate reliably on the market side.