直流工作接地的作用: （1）利用大地作良好的参考零电位，保证在各通信设

直流工作接地的作用: （1）利用大地作良好的参考零电位，保证在各通信设备间甚至各局（站）间的参考电位没有差异，从而保证通信设备的正常工作。（2）减少用户线路对地绝缘不良时引起的通信回路间的串音。直流保护接地的作用: （1）防止直流设备绝缘损坏时发生触电危险，保证维护人员的人身安全。（2）减小设备和线路中的电磁感应，保持一个稳定的电位，达到屏蔽的目的，减小杂音的干扰，以及防止静电的发生。

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结果 (英语) 1: [复制]

复制成功！

DC ground work effects: (1) good use of the earth as the reference zero potential among the communication devices to ensure that even the reference potential between Offices (stations) no difference, thus ensuring the normal operation of the communication device. (2) reduce crosstalk between the communication circuit caused when the subscriber line to ground insulation failure. DC grounding protective action: (1) preventing the risk of electric shock when damage to the insulation of DC devices, ensure the safety of maintenance personnel. (2) reducing the equipment and lines of electromagnetic induction, to maintain a stable potential, shielding the purpose of reducing the interference noise and to prevent generation of static electricity.

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结果 (英语) 2:[复制]

复制成功！

The role of DC operating grounding: (1) The use of the earth as a good reference zero potential, to ensure that the communication equipment between the reference potential is not different, and even between the offices (stations), so as to ensure the normal operation of communication equipment. (2) Reduce the serial recital between communication circuits caused by poor insulation of the user line to the ground. The role of DC protection grounding: (1) To prevent the damage of DC equipment insulation when the risk of electric shock, to ensure the safety of maintenance personnel. (2) Reduce the electromagnetic induction in the equipment and line, maintain a stable potential, to achieve the purpose of shielding, reduce noise interference, and prevent the occurrence of static electricity. ...

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结果 (英语) 3:[复制]

复制成功！

Function of DC working grounding: (1) Use the earth as a good reference zero potential to ensure that there is no difference in the reference potential between the communication equipment or even between the bureaus (stations), so as to ensure the normal operation of the communication equipment. (2) Reduce the crosstalk between communication circuits caused by poor insulation of user lines to the ground. Function of DC protection grounding: (1) To prevent electric shock hazard in case of insulation damage of DC equipment and ensure personal safety of maintenance personnel. (2) Reduce the electromagnetic induction in equipment and lines, maintain a stable potential, achieve the purpose of shielding, reduce noise interference, and prevent the occurrence of static electricity.

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