摘要
针对地面低压供电系统线路老化,导致供电安全性降低等问题,五阳煤矿对地面供电网路进行升级改造,同时加装了漏电断路器,避免人员触电事故、因短路故障等引起的火灾事故与变压器损坏事故。五阳煤矿通过选择DZ20L电流型漏电断路器,在整个地面低压供电网路中采用分级保护方式,确定合理的漏电断路器额定剩余动作电流,并对漏电断路器进行严格安装维护,使得改造后的地面供电系统安全运行,具有较大的推广意义。
Aiming at aging circuit of ground low voltage power supply system and decreasing of power supply safety,ground power supply network has been upgraded in Wuyang Colliery, at the same time residual current circuit breaker has been installed to avoid personnel electric shock accident, fire disaster and transformer damage accident. By choosing DZ20L current residual current circuit breaker to protect in grade the whole ground low voltage power supply network,reasonable residual current circuit breaker has been determined to rate rest oper ating current, which ensures the safety operating of upgrading ground power supply system and has greater promotion significance.
出处
《江西煤炭科技》
2016年第1期42-44,共3页
Jiangxi Coal Science & Technology
关键词
地面低压供电
漏电断路器
额定动作电流
安装
ground low--voltage power supply
residual current circuit breaker
rated operating current
installation
