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接地电阻柜在电力系统里的用处

网址:www.jiedixiang58.com  2020-07-27  作者:admin    阅读:

接地电阻柜安装前应完成基础、接地系统、电缆沟、预埋内外电缆及保护管的安装。安装时应符合有关标准和规定。设备之间的绝缘距离应满足相应的电压等级要求。同时还应考虑设备的通风、散热和安装维护。用叉车将设备运至安装现场,拆下固定底座的螺栓,小心取出设备,开箱包装时,避免损坏外壳、顶部或侧面安装;使用叉车时,注意对准底壳的角钢,以免损坏BO。t设备铭牌。本产品可安装在特殊基础或混凝土平台上,并可水平放置。
Before installation of grounding resistance cabinet, the installation of foundation, grounding system, cable trench, embedded internal and external cables and protection pipes shall be completed. Installation shall comply with relevant standards and regulations. The insulation distance between equipment shall meet the corresponding voltage level requirements. At the same time, ventilation, heat dissipation, installation and maintenance of the equipment should also be considered. Transport the equipment to the installation site with forklift, remove the bolts fixing the base, and take out the equipment carefully. When unpacking and packaging, avoid damaging the shell, top or side installation; when using the forklift, pay attention to the angle steel of the bottom shell to avoid damaging the Bo. T equipment name plate. This product can be installed on special foundation or concrete platform, and can be placed horizontally.
当电力系统发生故障时,如部分短路或开路,配电系统中的中性点将偏移。此时,中性点接地电阻将迫使输变电系统中性点接地并限制其故障电流,使电力系统有时间进行检测、诊断、保护和切换,以避免对线路和设备造成可能的损坏,接地电阻柜在电源中正常工作。ER输配电系统。工作时,连续电流很小。当电力系统发生故障时,流过中性点接地电阻的电流很大,时间很短。因此,它通常用于短期工作系统,其功率和电压水平取决于输配电系统。
When the power system fails, such as partial short circuit or open circuit, the neutral point in the distribution system will shift. At this time, the neutral point grounding resistance will force the transmission and transformation system neutral point grounding and limit its fault current, so that the power system has time for detection, diagnosis, protection and switching, so as to avoid possible damage to lines and equipment, and the grounding resistance cabinet works normally in the power supply. Er power transmission and distribution system. When working, the continuous current is very small. When the power system breaks down, the current flowing through the neutral grounding resistance is very large and the time is very short. Therefore, it is usually used in short-term operation system, and its power and voltage level depend on the transmission and distribution system.

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