产品概述
LW8A-40.5W/T2000-31.5户外型SF6断路器适用于交流50HZ、额定电压40.5kV的三相电气系统。它用于控制和保护电气系统以及测量电流互感器。
结构特点
1.LW8A-40.5六氟化硫断路器为户外瓷瓶柱结构，配备CT35弹簧操作结构。机构和主体呈“T”形排列。整机体积小，重量轻，结构简单，操作高效。体积小，易于安装和调试。机械寿命为10000次，适合频繁操作；
2.采用压缩空气灭弧室，分断性能优异，电气寿命可达20次；
3.密封性能可靠，静密封采用“O”型密封圈结构，动密封采用带弹簧压力补偿结构的“V”型密封环。变压器二次接线板采用压注工艺生产，抗老化性能强，保证年漏气率＜0.5%；
4.安装底盘和支架采用整体轧制钢板，采用高强度标准件，保证机械可靠性高；
5.内部或外部电流互感器的测量级铁芯由高磁导率的微晶合金材料制成，精度等级可达0.2级或0.2S级。产品每相可配备2-4个电流互感器。
技术参数
| No | 名称Name | 数值Data | |
| 1 | 额定电压Rated voltage | 40.5 | |
| 2 | 额定电流Rated current(A) | 1600/2000 | |
| 3 | 额定绝缘水平 Rated Insulate evel | 工频耐压(1min) Power frequency withstand voltage(kV)/1min | 95 |
| 雷电冲击耐受电压 Thunder impulse withstand voltage (kV | 185 | ||
| 4 | 额定短路开断电流Rated short-circuit breaking current(kA) | 25/31.5 | |
| 5 | 额定失步开断电流Rated out-of-phase breaking current (kA) | 7.9/10 | |
| 6 | 异相接地故障开断电流(kA)breaking current of earth fault in different phase(kA | 27.4/34.8 | |
| 7 | 额定单个电容器组开断电流Rated breaking current of single capacitor bank(A | 400 | |
| 8 | 额定操作顺序Rated Operating sequence | O-0.3S-CO-180S-CO | |
| 9 | SF6气体额定电压Rated SF6 gas pressure(Mpa) | 0.5 | |
| 10 | 分闸时间ms(额定电压)Switch-off time(on rated voltage)(ms | 30≤t<40 | |
| 11 | 合闸时间ms(额定电压)Switch-on time(on rated voltage)(ms | 60≤t<80 | |
| 12 | 额定短路关合电流(峰值)Rated shot-circuit making current(peak)(kA) | 63/80 | |
| 13 | 额定短路持续时闻Rated short-circuit duration(s | 4 | |
| 14 | 额定短路耐受电流Rated short-circuit with stand current (kA) | 25/31.5 | |
| 15 | 额定峰值耐受电流Rated peak value withstand current(kA | 63/80 | |
| 16 | 机械寿命试验(次)Mechanical life(time | 10000 | |
| 17 | 额定短路开断电流31.5kA/40kA累计开断次数(次) Cumulative breaking times of rated short-circuit breaking current 31.5 kA/40kA(time | 20 | |
| 18 | 额定电流累计开断次数(次 Cumulative breaking times of rated current(time | 2000 | |
| 19 | SF6气体年漏气率(%)Annual leakAge rate of SF6(% | <0.5 | |
| 20 | SF6气体微量水分含量(V/W)(PPM)Water content of SF6(V/V)(PPm | <150 | |
| 21 | 断路器外绝缘泄露比距(mm/kV)Outer insulating leakAge ratio distance(mm/kV) | >25、>31 | |
| 22 | 断路器质量kg Weight of the circuit breaker | 1000 | |
外形尺寸及安装图
合为通茂（陕西）进出口贸易有限责任公司
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