在城市配电网中，环网供电的经济效益、可靠性高，而作为环网供电的主要设备———环网柜现已广泛使用，为此，分析环网柜的性质、种类、应用情况及存在问题-Distribution network in the city, the economic benefits of the ring network power, high reliability, and as a ring network power supply main equipment--- RMU is now widely used for this analysis RMU nature, type, application and Problems