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The LW8 (A) -40.5 outdoor AC high-voltage sulfur hexafluoride circuit breaker is a three-phase AC 50Hz outdoor high-voltage electrical appliance that uses SF6 gas as the arc extinguishing and insulation medium, adopts a compressed air arc extinguishing structure, and has a particularly strong breaking capacity
概述Product Structure
LW8A-40.5(W)T2000-31.5型户外六氟化硫断路器是交流50HZ三相电力系统中的电气设备，适用于额定电压，40.5kV的电力系统中作控制和保护用，内附或外附电流互感器可供测量与保护用。
The LW 8A-40.5(W)T2000-31.5 outdoor type SF6 breaker finds its universalrange of application for the three-phases electrical system with alternating current50HZ and the rated voltage 40.5kV.It is used for controlling and protecting theelectrical system and measuring the current transformers.
型号及其含义Model description
结构特点Characteristic of structure
1. LW8A-40.5型六氟化硫断路器为户外瓷瓶支柱式结构，配CT35型弹簧操动结构，机构与本体成“T”型布置，整机体积小、重量轻，结构简单，操作功小，安装调试方便。机械寿命10000次，适用于频繁操作；
1. The LW8A-40.5 sulfur hexafluoride circuit breaker has an outdoor porcelain bottle pillar structure, equipped with a CT35 spring-operated structure. The mechanism and the body are arranged in a "T" shape. The whole machine is small in size, light in weight, simple in structure and efficient in operation. Small, easy to install and debug. Mechanical life span is 10,000 times, suitable for frequent operations;
2.采用压气式灭弧室，开断性能优良，电寿命达20次；
2. It adopts a compressed air arc extinguishing chamber with excellent breaking performance and an electrical life of up to 20 times;
3.密封性能可靠，静密封采用“O”型密封圈结构，动密封采用“V”型密封圈带弹簧压力补偿结构。互感器的二次接线板采用压力注射工艺生产，抗老化性能强，确保年漏气率<0.5%;
3. The sealing performance is reliable, the static seal adopts "O" type sealing ring structure, and the dynamic seal adopts "V" type sealing ring with spring pressure compensation structure. The secondary wiring board of the transformer is produced by pressure injection process, which has strong anti-aging performance and ensures that the annual air leakage rate is <0.5%;
4.安装底架和支撑为整体钢板卷制而成，采用高强度标准件，机械可靠性高；
4. The installation chassis and supports are made of integral rolled steel plates and use high-strength standard parts to ensure high mechanical reliability;
5.内附或外附电流互感器计量级铁芯采用微晶合金高导磁性能材料，准确级可达0.2级或0.2S级。产品每相可配2-4只电流互感器。
5. The measurement-grade iron core of the internal or external current transformer is made of microcrystalline alloy material with high magnetic permeability, and the accuracy level can reach 0.2 level or 0.2S level. Each phase of the product can be equipped with 2-4 current transformers.
技术参数 Technical Data
| 序号 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 | |
外形及安装尺寸图Outline dimension and installation drawing
概述Product Structure
LW8A-40.5(W)T2000-31.5型户外六氟化硫断路器是交流50HZ三相电力系统中的电气设备，适用于额定电压，40.5kV的电力系统中作控制和保护用，内附或外附电流互感器可供测量与保护用。
The LW 8A-40.5(W)T2000-31.5 outdoor type SF6 breaker finds its universalrange of application for the three-phases electrical system with alternating current50HZ and the rated voltage 40.5kV.It is used for controlling and protecting theelectrical system and measuring the current transformers.
型号及其含义Model description
结构特点Characteristic of structure
1. LW8A-40.5型六氟化硫断路器为户外瓷瓶支柱式结构，配CT35型弹簧操动结构，机构与本体成“T”型布置，整机体积小、重量轻，结构简单，操作功小，安装调试方便。机械寿命10000次，适用于频繁操作；
1. The LW8A-40.5 sulfur hexafluoride circuit breaker has an outdoor porcelain bottle pillar structure, equipped with a CT35 spring-operated structure. The mechanism and the body are arranged in a "T" shape. The whole machine is small in size, light in weight, simple in structure and efficient in operation. Small, easy to install and debug. Mechanical life span is 10,000 times, suitable for frequent operations;
2.采用压气式灭弧室，开断性能优良，电寿命达20次；
2. It adopts a compressed air arc extinguishing chamber with excellent breaking performance and an electrical life of up to 20 times;
3.密封性能可靠，静密封采用“O”型密封圈结构，动密封采用“V”型密封圈带弹簧压力补偿结构。互感器的二次接线板采用压力注射工艺生产，抗老化性能强，确保年漏气率<0.5%;
3. The sealing performance is reliable, the static seal adopts "O" type sealing ring structure, and the dynamic seal adopts "V" type sealing ring with spring pressure compensation structure. The secondary wiring board of the transformer is produced by pressure injection process, which has strong anti-aging performance and ensures that the annual air leakage rate is <0.5%;
4.安装底架和支撑为整体钢板卷制而成，采用高强度标准件，机械可靠性高；
4. The installation chassis and supports are made of integral rolled steel plates and use high-strength standard parts to ensure high mechanical reliability;
5.内附或外附电流互感器计量级铁芯采用微晶合金高导磁性能材料，准确级可达0.2级或0.2S级。产品每相可配2-4只电流互感器。
5. The measurement-grade iron core of the internal or external current transformer is made of microcrystalline alloy material with high magnetic permeability, and the accuracy level can reach 0.2 level or 0.2S level. Each phase of the product can be equipped with 2-4 current transformers.
技术参数 Technical Data
| 序号 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 | |
外形及安装尺寸图Outline dimension and installation drawing