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    电气成套的外壳应有什么防护措施?

    发布时间:2023-01-11 来源:/ 浏览量:

    电气成套的外壳应有保护接地或接零连接的防护措施。接地保护用于配电变压器中性点不直接接地(三相三线制)的供电系统中,用以保证当电气成套因绝缘损坏而漏电时产生的对地电压不超过范围。
    The complete set of electrical enclosures shall be provided with protective measures for protective grounding or neutral connection. The grounding protection is used in the power supply system where the neutral point of the distribution transformer is not directly grounded (three-phase three-wire system) to ensure that the voltage to the ground generated by the leakage of the electrical complete set due to insulation damage does not exceed the safe range.
    为了保证电气成套的正常运行和,保护功能须接地。为了使电气成套接地,必须使用接地装置。接地装置主要包括两种接地线和接地体。接地体是用来直接接触土壤的金属体;接地线是用来连接接地体和电气成套的电线。
    In order to ensure the normal operation and safety of the electrical complete set, the protection function must be grounded. In order to make the complete electrical grounding, the grounding device must be used. The grounding device mainly includes two kinds of grounding wire and grounding body. The grounding body is a metal body used to contact the soil directly; The grounding wire is used to connect the grounding body and the complete set of electrical wires.
    此外检查接地装置的各个连接点是否有损伤、腐蚀、折断现象以及是否接触良好;在雨季前,也就是土壤的电阻率大时,对接地设备的接地电阻进行测量,并分析比较测量结果。检查土壤呈强酸、碱、盐的地带地下500mm以内的接地体是否被腐蚀严重。
    In addition, check whether each connection point of the grounding device is damaged, corroded, broken and in good contact; Before the rainy season, when the soil resistivity is high, measure the grounding resistance of grounding equipment, and analyze and compare the measurement results. Check whether the grounding body within 500mm underground in the zone with strong acid, alkali and salt is seriously corroded.
    电气成套
    检查电气成套连接接地线是否正常,接地线连接接地网是否正常,以及接地线连接接地干线是否正常;对于检修过的电气成套,要进一步检查接地线连接是否牢固。
    Check whether the complete set of electrical connection grounding wire is normal, whether the grounding wire is connected to the grounding grid, and whether the grounding wire is connected to the grounding trunk line; For the overhauled electrical complete set, further check whether the grounding wire is firmly connected.
    对配(变)电所的接地设备通常一年检查一次;用于防雷的接地设备必须每年雷雨季来临前检查一次;视建筑物或车间的具体情况,一年检查1~2次接地线的总体运行情况。
    The grounding equipment of the distribution (substation) is usually inspected once a year; The grounding equipment used for lightning protection must be inspected once a year before the thunderstorm season; According to the specific situation of the building or workshop, check the overall operation of the grounding wire once or twice a year.
    对安装在腐蚀性土壤下的接地装置,观察具体运行情况以每3~5年为周期检查一次地面下的接地体;每1~3年测量一次接地设备的接地电阻;对移动式、手持式的电气成套每次使用前都需检查一次接地线。更多相关内容就来我们网站进行咨询吧!
    For the grounding device installed in corrosive soil, observe the specific operation and check the grounding body under the ground every 3-5 years; Measure the grounding resistance of grounding equipment once every 1-3 years; For mobile and hand-held electrical sets, the grounding wire shall be checked before each use. Come to our website for more relevant content Consult!
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