接地電阻 Grounding Resistor
█ 產(chǎn)品描述(Product Profile)
地鐵設(shè)置接地電阻器,其作用是防止接地刷的異常磨損、軸承電腐蝕、使接地電流均勻。軌道交通車輛接地系統(tǒng),抑制和消除車體和軌道之間雜散電流的作用,從而延長(zhǎng)了轉(zhuǎn)向架等車輛設(shè)備的壽命。
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.
█ 產(chǎn)品特點(diǎn)(Product Features)
1.電阻功率:100~1000W(依客戶) 2.電阻阻值:0~1Ω(依客戶) 3.冷卻方式: 自然風(fēng)冷 4.安裝方式: 一般車底安裝 5.電阻材料: SUS304或NiCr合金 6.防護(hù)等級(jí): IP00或 其他 7.執(zhí)行標(biāo)準(zhǔn):GB/T25118或IEC60322(型式試驗(yàn)) GB/T21563 或 IEC 61373 (沖擊和振動(dòng)) | 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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█ 電阻材質(zhì)比較(Resistor Material Comparison)
材質(zhì) Material | 密度 (g/mm3) | 電阻率 (Ω·mm2/m) | 比熱容J/(g·K) | 導(dǎo)熱率 W/(m·K) | 溫度特性 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 |
█ 選型表(Selection Table)
額定功率(W) Rated power | 阻值(Ω) Resistance | 箱體尺寸 Boxing Size (mm) | 電阻材質(zhì) Resistor material | 防護(hù)等級(jí) Class of protection | ||
長(zhǎng)(L)mm | 寬(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:以上只是部分規(guī)格,更多規(guī)格請(qǐng)?jiān)儐?wèn)本公司業(yè)務(wù)人員
Note: For other technical parameters & requirements, please contact with our company's business
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