The operating mechanism with spring energy storage ensures fast closing and switching operation (<1000ms).
Operator place: Local/Remote.
Equipped with an electronic controller, it can be operated locally or with FTU/RTU interface for console operation.
|Parameter Name||Unit||Technical Requirement|
|Rated Maximum Voltage||kV||12|
|Rated continuous Current||A||630|
|Short Time Withstand Current||kA||20|
|Short-circuit Making Current (peak)||kA||50|
|Power Operating Time (Close/Open)||sec||<2|
|Rated full load operations||times||400|
|Main Active (0.7pf)||A||630|
|Lightning Impulse Withstand Level|
|Phase to Earth||kV||75|
|Power Frequency withstand voltage|
|Phase to Earth||kV||42|
|Other Ratings & Specifications|
|Creepage Distance (Silicon)||mm||830|
|Arc Extinction Medium||SF6 Gas|
|Insulation Medium||SF6 Gas|
|Leakage Rate||cc/ sec||≤0.5%|
|Product size (max)|
|Environmental conditions for equipment use|
|2.1 height above sea level：≤3000m|
|2.2 Air temperature： -40℃～+50℃|
|Maximum diurnal temperature difference：≤25℃|
|2.3 Relative humidity：Daily mean95% monthly average90%|
|2.4 Maximum wind speed：≤34m/ｓ|
|2.5 Earthquake intensity：＜8 degree|
|2.6 Icing thickness: ＜10mm|
|2.7 Thickness of snow: ＜35mm|
|2.8 irradiance: ＜0.1W/cm2|
|2.9 Pollution grade: Ⅲ class, Ⅳ class Ⅲ, Ⅳ|
|2.10 Installation site: No fire disaster, explosion danger, chemical corrosion, and frequent strenuous vibration places|
The load switch that uses SF6 gas as insulation and arc extinguishing medium is called the SF6 load switch. It can be used to switch and switch load current and overload current, and it can also be used to switch and switch no-load circuits, no-load transformers, and capacitors. Groups, etc., all three-position load switches with the functions of connecting, disconnecting, and grounding have the characteristics of simple structure and low price. But the load switch cannot disconnect the short-circuit current.
The SF6 load switch is an excellent load switch that many users have experienced in recent years. In addition to its long electrical life and strong braking force, it has the same advantages as the vacuum load switch. Its outstanding advantage is that it is easy to achieve three working positions (connected, disconnection and grounding), small current (inductance, capacitance) breaking, strong resistance to severe environmental conditions. It is suitable for popularization and application in urban and rural medium voltage distribution networks.
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