?Product overview

CKAS-12 series environmental protection gas insulated Ring Main Unit adopts dry air as insulating medium, and the vacuum interrupter is used to extinguish the arc. Its disconnector and interrupter are completely enclosed in a stainless steel gas box of dry air, which is fully insulated and sealed. The gas box is made of imported stainless steel plate and welded by advanced robot welding technology. The protection level of the inflatable shell reaches IP67. The bus has the structure of upper expansion and side expansion, with mature technology, convenient installation, green environmental protection, safety and reliability, compact structure, maintenance-free, long life and other advantages. It is a completely environment-friendly switchgear product with high-tech core devices and new technologies, new processes and new materials. Its main functional units are: V unit (circuit breaker unit).

?Technical parameter

?Product features

Green environmental protection: the product uses dry air as insulating medium, which is convenient to obtain materials, vacuum arc extinguishing, and does not use any SF6 or harmful gases, which is environmentally friendly and safe; After the product life cycle, dry air can be directly discharged into the atmosphere without any gas recovery treatment, which is simple and energy-saving without any pollution.

Safety: All primary high-voltage components are sealed in stainless steel gas box, fully insulated and sealed, with protection grade IP67 and overall maintenance-free design; The main loop does not adopt solid sealing technology, which is beneficial to product heat dissipation and will not produce partial discharge problems and hidden dangers; The switch is equipped with an isolating switch observation window and LED lamp illumination, and the fracture of the isolating switch is clearly visible, thus improving the safety of product maintenance.

Intelligentization: It is highly intelligent and meets the requirements of smart grid and intelligent operation and maintenance of State Grid and South Grid.

Stable and reliable: after electric field simulation analysis, calculation and optimization, the product has superior electrical performance, and the partial discharge is less than 10pC；; The micro-positive pressure of 0.02MPa in the gas box forces moisture, dust and salt fog in the external environment not to invade the gas box, which is suitable for areas with altitude of 5000 meters, cold, low-lying and humid areas, high salt fog along the coast, strong sandstorm and so on.

Compact structure: product unit structure, optional side expansion or top expansion bus expansion mode, convenient installation, expansion or replacement, and can realize arbitrary expansion and replacement of units; Compact structure, small volume, light weight, easy to carry and replace, and the overall dimensions are: width 420mm× depth 900mm× height 2000mm；; The products have upper isolated upper grounding structure and lower isolated lower grounding structure, which meet the technical requirements of national grid standardization design and southern grid.