低压断路器使用整定中存在的问题

Problems in use and modification of l ow voltage open circuit equipment

介绍了低压断路器的类型有两种:一种是普通塑壳式如DZ系列,另一种是选择型万能式.如DW15、ME系列;同时介绍了低压断路器的长延时,短延时和瞬时三种保护特性及用途,重点指出低压断路器使用整定中存在的主要问题,即不分低压断路器的类型统一整定造成保护失灵,同时指出正确的使用整定方法,还指出两级低压断路器在整定时间上存在着配合不清的问题,提出应如如何配合和遵守的原则,以保证低压断路器安全运行.

The article mainly deals with the pro blems in the use and modification of l ow voltage open cirouit equipment,that is the loss of effective protection as a result of oueral m odification without identifging th e kinds of lowvoltage open ciruit equipment co rreltly,moreouer,it talks about th e three kinds of protection characte ristics and methods of low voltage open circuit equipment when it comes into opertion a long time,a short time and right now after an accident,meanwhile is put f orward that the two ...