1、电缆桥架系统应具有可靠的电气连接并接地（只对金属桥架）。

1, cable tray system should have a reliable electrical connection and grounding (only on the metal bridge).

2、当允许利用电缆桥架系统构成接地干线回路时应符合下列要求。电缆桥架端部之间连接电阻应不大于0.00033欧姆，接地孔应绝缘涂层。在1KV及以下中性点直接接地系统中，受电设备的接地与系统中性线接地相连。装有处动切断供电装轩时，桥架的级长方向金属横截面积应不小于规定值。

2, when allowed to use the cable tray system composed of grounding line circuits should meet the following requirements. Between the end of the cable connection resistance should be less than 0.00033 ohm, grounding hole should remove the insulating coating. In the 1KV and the following neutral point direct grounding system, the grounding of the electric equipment is connected with the grounding of the neutral grounding system. A dynamic assembly when the power supply is cut off, the prefect direction of metallic cross-sectional area should not be less than the specified value.

3、对于振动场所，在接地部位的连接处应装置弹簧圈。

3, for the vibration place, in the grounding part of the connection of the device spring ring.

4、沿电缆桥架全长另敷设接地干线时，每段（包括非直线段）电缆桥架应少有一点与接地干线可靠连接。

4, along the cable tray full-length other laying ground lines, each (including non straight line segments) cable tray shall be at least a little and grounding line connection is reliable.

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