介紹鑒定安全滑觸線合格的四大標準：
Qualified appraisal safety sliding contact line four criteria:
1、滑觸線膨脹問題，長度超過100米以后就要考慮膨脹問題。
1, the sliding contact problem of linear expansion, will consider expanding problem length more than 100 meters.
2、電壓降問題，根據各種銅條長度電壓降也有所不同。
2, the problem of voltage drop, according to all kinds of copper bar length voltage drop is also different.
3、碳刷的使用壽命，安全滑觸線屬于易耗品，行駛的距離不利于設備的維護。
3, the service life of carbon brush, safety sliding contact line belong to the consumable, driving distance is not conducive to maintenance of the equipment.
4、集電器性能，主要從輪子使用壽命、轉彎輪設計和集電器是否滿足各種環境下使用。
4, collector performance, mainly from the service life of the wheel, turning round design and collector whether meet all kinds of environments. |
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