The SH-40.5 SF6 gas-insulated ring main unit is suitable for power transmissionand distribution of new energy power plants, compact secondary substations,commercial buildings, rail transit, underground substations and remote substations,especially suitable for installation in places with narrow space. The product is designedwith high performance and small size, full SF6 gas insulation. The operation of theequipment is independent of the external environment, such as high altitude, salt spray.condensation, dust, wet and other climates, and the maintenance-free and reliableapplication is realized truly, so as to meet the needs ofall types of power users.

Features:

• It is featured with comprehensive function, smart and compact, easy to be installed in the area with small space such as wind tower.
• Modular design is adopted, any combination and extension can be allowed.and the splicing and replacement in the wind tower can be realized.
• The switch cabinet gas box shall be assembled in the factory for overalltransport. The reliable bus connector is adopted for the LCL. There is no needto perform on-site handling of insulating gases.
• The high-pressure components are all sealed in the grounded 3mm stainlesssteel air box, which greatly protects the personal safety of the operator.
• The inflation pressure of the air box is as low as 0.12MPa (absolute value:20°C), the leakage rate is low, the rated insulation level and breaking capacityare guaranteed at zero gauge pressure, and the equipment does not need to beoperated at reduced voltage to ensure the reliability of power supply.
• Full laser welded high-quality stainless steel air box is adopted, with theannual gas leakage rate less than 0.1%.
• Solid interface plug-in technology is adopted, as well as fully shielded high-voltage components, which is safe and reliable in operation.

Technical parameter table