延边朝鲜族自治州汪清县雷电冲击电流25KA浪涌
Surge protector power level test switch is suitable for aerial input in the building lightning protection distribution box. With the discharge energy, long life, the role of Yangzhou Ming Lei electrical lightning arrester is used to power system protection in various electrical equipment from lightning overvoltage, operating over voltage, power frequency transient overvoltage impact damage and a kind of electrical appliances. The type of lightning protection device mainly has the protection gap, the valve type lightning arrester and the Zinc Oxide lightning protection device. The protective gap is mainly used to limit the atmospheric over voltage, which is generally used for the protection of the distribution system, the line and the substation. Valve type lightning arrester and zinc oxide lightning arrester for protection of substation and power plant, in 500 kV and below system is mainly used to limit over-voltage atmosphere. In EHV system will also be used to limit overvoltage or as Internal Overvoltage of the backup protection.
开关型一级试验电源电涌保护器适用于建筑物内架空输入的配电箱防雷。其具有泄放能量大、使用寿命长、安扬州雷明电气防雷器的作用是用来保护电力系统中各种电器设备免受雷电过电压、操作过电压、工频暂态过电压冲击而损坏的一种电器。防雷器的类型主要有保护间隙、阀型防雷器和氧化锌防雷器。保护间隙主要用于限制大气过电压,一般用于配电系统、线路和变电所进线段保护。阀型防雷器与氧化锌防雷器用于变电所和发电厂的保护,在500KV及以下系统主要用于限制大气过电压,在超高压系统中还将用来限制内过电压或作内过电压的后备保护。
特点:
选用优质压敏电阻器、气体放电管(NPE模块)、火花间隙器件(FA模块),高可靠质量保证
通流容量大、响应时间快
采用温控断路技术,避免火灾发生,有工作故障指示(FB系列)
带远程告警接点方便远程监视(FB)系列
模块式设计,安装维护简单,外形美观(FB系列)
型号 LM1-A50/4 LM1-A25/4
依据EN 61643-11, SPD 1级 1级
依据IEC 61643-1, SPD Ⅰ级 Ⅰ级
额定电压(最大持续工作电压)UC 275V 275V
雷电冲击电流 (10/350μs) Iimp 50/100kA 25/50kA
电压保护水平 Up ≤2.0kV ≤1.5kVUc时工频续流遮断能力 [L-N] Ifi 25kArms 25kArms
安装方法:
安装在低压主(分)配电柜或低压总开关柜内,并联在电源进线处接线图如图所示
接线力求短、粗、直,电源连线不少于10平方毫米的多股铜线,接地线不少于16平方毫米的多股铜线雷器前端应串联合适的熔断器或断路器.
安装注意事项:
1安装时必须断开电源,严禁带电操作,连接导线必须符合要求,接地电阻要小于4Ω
2防雷器无须特别维护,只需定期检查连接是否有松动,状态指示是否正常。当防雷器的模块故障显示窗指示红色时(遥信端子输出告警信号)则表示防雷器发生故障,应及时更换延边朝鲜族自治州汪清县雷电冲击电流25KA浪涌