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三相组合式过电压保护器
Three-phase combined overvoltage protector
LA □ □
① ② ③
① . 产品型号
② . A:电机型 、B:电站型 、C:电容型 、O:中性点保护
③ . 动作电压:7.6:6kV、12.7:10kV、42:35kV
① .Product model
② .A:Motor、B:Substation、C:Capacity、O:Neutral protection
③ .Discharge voltage:7.6:6kV、12.7:10kV、42:35kV
使用范围和用途 / Scope and Purpose
三相组合式过电压保护器(三相组合式避雷器)是用于保护电力设备绝缘免受过电压危害的保护电器, 是一种新型的避雷器, 它在限制相地之间
过电压的同时,又对相间过电压进行有效地限制,广泛应用于保护真空开关,旋转电机,并联补偿电容器,发电厂,变电站等,这种组合式避雷
器已运行了十几年,实践证明是一种切实可行有效限制相间过电压的措施,一台组合式避雷器可起到六台普通避雷器的作用。由于避雷器内部采
用了大容量氧化锌电阻片作为主要元件,它具有良好的伏安特性和吸收过电压的能力,对保护设备能提供可靠的保护,目前已广泛为电力系统所
使用。
The three-phase combined overvoltage protector (three-phase combined arrester) is a protection device for protecting the insulation of power
equipment from overvoltage hazard. It is a new type of arrester that limits the overvoltage between phase and ground. It also effectively
limits the phase-to-phase overvoltage and is widely used to protect vacuum switches, rotating electrical machines, parallel compensation
capacitors, power plants, substations, etc. This combined arrester has been in operation for more than ten years and has proved to be
practical and effective. To limit the phase-to-phase overvoltage, a combined arrester can function as six ordinary lightning arresters. Since the
large-capacity zinc oxide resistor is used as the main component inside the arrester, it has good volt-ampere characteristics and the ability to
absorb over-voltage, which provides reliable protection for the protection equipment and has been widely used in power systems.
产品标准 /Standard
本产品执行国标 GB11032-2000《交流无间隙金属氧化物避雷器》, JB/T10496-2005《交流三相组合式无间隙金属氧化物避雷器》、JB/T10609-
2006《交流三相组合式有串联间隙金属氧化物避雷器》、JB/T8459-1996《避雷器产品型号编制方法》。
This product implements GB11032-2000 "AC gapless metal oxide arrester", JB/T10496-2005 "AC three-phase combined gapless metal oxide arrester",
JB/T10609-2006 "AC three-phase combined type has series gap Metal oxide arrester", JB/T8459-1996 "Method for compiling the arrester product
model".
结构特点 /Structure features
● 外形结构小巧,绝缘耐高压,极大地利用和缩减了使用空间;
● 复合外套整体模压,具有良好的密封、防爆、防潮性能,抗漏痕、抗电蚀,耐污、憎水性好;
● 结构新颖独特,技术性能优异,电气绝缘性能好;
● 高压电缆接线,保证绝缘强度,安装灵活 ;
● 体积小,重量轻,节省占地,特别适合在开关柜内安装。
● Compact structure, high insulation and high pressure, increase the utilization and reducing the use space;
● The composite jacket is integrally molded, with good sealing, explosion-proof and moisture-proof performance, anti-leakage, anti-
corrosion, good stain resistance and water repellency;
● The structure is novel and unique, the technical performance is excellent, and the electrical insulation performance is good;
● High-voltage cable connection to ensure insulation strength and flexible installation;
● Small size, light weight and space saving, especially suitable for installation in switch cabinets.
使用条件 /Enviromental conditions
● 海拔高度不大于 2000m(大于 2000m 订货时需告知);
● 环境温度:-40℃ ~+40℃;
● 电源频率:48Hz~62Hz;
● 长期施加在避雷器上的工频电压不超过避雷器的持续运行电压;
● 最大风速不超过 35m/s;
● 地震烈度 7 度及以下地区。
● The altitude is not more than 2000m (information should be given when ordering more than 2000m);
● Ambient temperature: -40 ° C ~ +40 ° C;
● Power frequency: 48Hz ~ 62Hz;
● The power frequency voltage applied to the arrester for a long time does not exceed the continuous operating voltage of the arrester;
● The maximum wind speed does not exceed 35m/s;
● The earthquake intensity is 7 degrees and below.
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