接地电阻 Grounding Resistor
█ 产品描述(Product Profile)
地铁设置接地电阻器,其作用是防止接地刷的异常磨损、轴承电腐蚀、使接地电流均匀。轨道交通车辆接地系统,抑制和消除车体和轨道之间杂散电流的作用,从而延长了转向架等车辆设备的寿命。
Grounding resistors are mainly applied to prevent abnormal wear of grounding brush, bearings electrical erosion and current uniform distribution. The grounding system of the rail transit vehicle can prolong the life span of the vehicle equipment by restraining and eliminating the stray current between the vehicle body and the rail track.
█ 产品特点(Product Features)
1.电阻功率:100~1000W(依客户) 2.电阻阻值:0~1Ω(依客户) 3.冷却方式: 自然风冷 4.安装方式: 一般车底安装 5.电阻材料: SUS304或NiCr合金 6.防护等级: IP00或 其他 7.执行标准:GB/T25118或IEC60322(型式试验) GB/T21563 或 IEC 61373 (冲击和振动) | 1. Rated Power:100W~1000W 2. Rated Resistance:0~1Ω 3. Cooling Way: Natural air cooling 4. Installation: Vehicle bottom-mounted 5. Resistor material: 0Cr18Ni9 or NiCr alloy 6. Class of protection:IP00 7. Executive standard: GB/T25118 or IEC60322 (Type test) GB/T21563 or IEC61373 (Shock & vibration)
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█ 电阻材质比较(Resistor Material Comparison)
材质 Material | 密度 (g/mm3) | 电阻率 (Ω·mm2/m) | 比热容J/(g·K) | 导热率 W/(m·K) | 温度特性 ppm/℃ |
SUS304 | 7.9 | 0.72 | 0.5 | 13.2 | ≤1400 |
SUS316 | 7.93 | 0.78 | 0.45 | 13.23 | ≤900 |
SUS310S(Cr25Ni20) | 7.98 | 0.88 | 0.46 | 13.2 | ≤600 |
Cr20Ni30 | 7.9 | 1.04 | 0.5 | 16 | ≤300 |
█ 选型表(Selection Table)
额定功率(W) Rated power | 阻值(Ω) Resistance | 箱体尺寸 Boxing Size (mm) | 电阻材质 Resistor material | 防护等级 Class of protection | ||
长(L)mm | 宽(W)mm | 高(H)mm | ||||
500 | 0.05Ω | 290 | 195 | 105 | SUS316 | IP00 |
300 | 0.05Ω | 290 | 195 | 110 | SUS316 | IP00 |
300 | 0.06Ω | 290 | 195 | 110 | SUS304 | IP00 |
300 | 0.1Ω | 290 | 195 | 105 | SUS316 | IP00 |
300 | 0.1Ω | 490 | 140 | 85 | SUS304 | IP00 |
300 | 0.05Ω | 490 | 140 | 85 | SUS304 | IP00 |
300 | 0.06Ω | 390 | 260 | 250 | SUS304 | IP00 |
300 | 0.06Ω | 450 | 332 | 250 | SUS304 | IP00 |
注:以上只是部分规格,更多规格请询问本公司业务人员
Note: For other technical parameters & requirements, please contact with our company's business
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