开封电缆回收-二手电缆回收-待卖格-新闻资讯

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开封电缆回收-二手电缆回收-待卖格-新闻资讯

开封电缆回收-二手电缆回收-待卖格-新闻资讯　　任经理：１７７１７１２６０２５　　鼎盛废旧物资回收欢迎您电气装置或电气线路带电部分的某点与大地连接、电气装置或其它装置正常时不带电部分某点与大地的人为连接都叫接地；亦可说成电力设备、杆塔或过电压保护装置用接地线通过埋入地中并直接与大地接触的金属导体与大地连接。电力系统中接地的部分一般是中性点，也可以是相线上的某一点，电气设备的接地部分则是正常情况下不带电的金属导体，一般为金属外壳。 Electrical equipment or electrical circuit electrically charged part of some point connects to the earth, electrical device or other device is charged with the earth at some point when normal human connections are called grounding; Can be said to electric power equipment, tower or overvoltage protection grounding line through to dive in and direct contact with the metal conductor and earth connection. Is generally neutral point grounding part of power system, it can also be a point on the phase line, grounding part of the electrical equipment is not normally charged metal conductor, generally for the metal shell. 　　1、电气设备接地技术原则 1, the principle of electrical equipment grounding technology 　　1.1 不同用途和不同电压的电气设备，除有特殊要求外，一般应使用一个总的接地体，按等电位联接要求，应将建筑物金属构件、金属管道与总接地体相连接。 1.1 different USES and different voltage of electric equipment, in addition to have special requirements, the general should use a general earthing body, according to the requirements of equipotential connection, building hardware, metal pipe should be connected to total grounding system. 　　1.2 人工总接地体不宜设在建筑物内，总接地体的接地电阻应满足各种接地中小的接地电阻要求。 1.2 artificial total grounding body should not be located in buildings, the grounding resistance of grounding body should always meet the requirements of the least of all kinds of earthing grounding resistance. 　　1.3 为人身和设备安全，各种电气设备均应根据国家标准GB14050《系统接地的形式及安全技术要求》进行保护接地。保护接地线除用以实现规定的工作接地或保护接地的要求外，不应作其它用途。 1.3 in order to ensure the safety of person and equipment, all kinds of electrical equipment shall be according to the national standard GB14050 "system grounding and safety technical requirements in the form of" to protect the earth. Protective grounding line in addition to the used to make the work rules or grounding protection requirements, should not for other purposes. 　　2、电气设备接地装置的技术要求 2, electrical equipment, earthing device of technical requirements