高低壓成套設備是指將高壓和低壓電氣設備元件組合在一起，進行合理配置，并組合封閉在金屬外殼內，形成一個統一的電氣設備整體。其主要作用是實現電能的輸配、變換、分配，保護電力設備和線路，提高電力系統的運行效率和可靠性。具體如下：

　　High and low voltage complete equipment refers to the combination of high and low voltage electrical equipment components, which are reasonably configured and enclosed in a metal casing to form a unified electrical equipment whole. Its main function is to achieve the transmission, transformation, and distribution of electrical energy, protect the safety of power equipment and lines, and improve the operational efficiency and reliability of the power system. as follows:

　　1.高壓成套設備：通常指電壓等級在1kV以上、330kV以下的交流電壓或1.5kV以上、400kV以下的直流電壓的電氣設備組合，主要用于電力系統的控制和保護，如高壓開關柜、變壓器等。

　　1. High voltage complete equipment: usually refers to electrical equipment combinations with AC voltage levels above 1kV and below 330kV or DC voltage levels above 1.5kV and below 400kV, mainly used for control and protection of power systems, such as high-voltage switchgear, transformers, etc.

　　2.低壓成套設備：一般指電壓等級在380V及以下的電氣設備組合，常見的有低壓開關柜、配電盤、控制箱等，主要用于電能的分配和控制。高低壓成套設備廣泛應用于供電系統中的變配電站、工礦企業、高層建筑等場所，是電力系統中不可或缺的重要組成部分。

　　2. Low voltage complete equipment: generally refers to electrical equipment combinations with voltage levels of 380V and below, commonly including low-voltage switchgear, distribution panels, control boxes, etc., mainly used for energy distribution and control. High and low voltage complete sets of equipment are widely used in power distribution stations, industrial and mining enterprises, high-rise buildings and other places in the power supply system, and are an indispensable and important component of the power system.

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