Drafts for gas-insulated switches

   The tank gas-insulated switch serves for switching of electric chains in normal and emergency operation, including in cycles APV, in networks of three-phase alternating current.  

   The switch is intended for operation in the opened and closed distributing devices in alternating current mains with a frequency of 50 Hz with a rated voltage of 220 kV, in areas with a temperate and frigid climate. The weight and dimensions of gas-insulated tank switches allow to establish them instead of any types of the switches which are in operation.

Advantages

• Minimum service
• High operational characteristics
• It is suitable for operation in all climatic zones
• It is supplied with the simple and reliable drive
• High seismic stability

Drafts are applied in the high-voltage gas-insulated switches working among an elegaz (SF6) on TU 6-02-1249-83 with an excessive pressure to 1,0 MPas (10,0 kgfs/cm) with the range of temperatures from minus 60 to plus 80 0C. Material of drafts is steady against products of decomposition of an elegaz (SF4, SF2, SOF2,HF, fluorides of metals).