靜電除塵高壓隔離開關它的作用是做為除塵器各電場高壓電源切換、轉移和接地之用。其型式有二點式、三點式、四點式。電除塵器直流高壓隔離開關 ，安置在電除塵器和高壓整流變壓器之間，在無載的環境下，用于高壓回路的切換，開關分為：單極式手動（左，右） 雙極式手動，四極式手動，四點式軟軸式，四點電動式，也可以按用戶要求定制。安置在高壓硅整流器與電除塵器之間，在無負載的環境下，用于電除塵器高壓回路的切換.轉移和接地，適應環境海拔不高出2000米，環境溫度不高于±50℃，不低于-40℃，氛圍相對濕度≤95%（30±2℃），安置環境應清潔干燥無導電灰塵土，不含有腐化金屬的氣體及爆炸傷害的介質存在，并且無劇烈振動。

The electrostatic precipitator high-voltage isolation switch is used for switching, transferring, and grounding the high-voltage power supply of each electric field of the precipitator. Its types include two point type, three point type, and four point type. The DC high-voltage isolation switch for the electrostatic precipitator is installed between the electrostatic precipitator and the high-voltage rectifier transformer. It is used for switching the high-voltage circuit in a no-load environment. The switches are divided into: single-pole manual (left, right) bipolar manual, four-pole manual, four-point flexible shaft type, and four-point electric type, which can also be customized according to user requirements. It is installed between the high-voltage silicon rectifier and the electrostatic precipitator, and is used for switching, transferring, and grounding the high-voltage circuit of the electrostatic precipitator in a no-load environment. It is suitable for environments with an altitude not higher than 2000 meters, an ambient temperature not higher than ± 50 ℃, not lower than - 40 ℃, and an ambient relative humidity of ≤ 95% (30 ± 2 ℃). The installation environment should be clean, dry, and free of conductive dust, gases containing corrosive metals, and explosive media, and free of severe vibration.