The material performance of the primary and secondary fusion standardized ring cage box is not inferior to S304 stainless steel or GRC material (glass fiber reinforced cement) and other materials. The shell should have sufficient mechanical strength and should not be deformed or damaged during lifting, transportation and installation. The protection level of the outer box should not be lower than IP43. If the material of the ring cage is metal, the nominal thickness is ≥ 2mm, and the allowable dimensional deviation meets the Class B accuracy requirements of "GB/T 708 Dimensions, Shapes, Weights and Allowable Deviations of Cold-rolled Steel Plate and Steel Strips".

The metal outer box should be treated with anti-corrosion coating technology. The coating should be uniform and consistent in thickness. The coating should have strong adhesion.

 With the continuous development and progress of society, my country's urban power grid has undergone tremendous changes. Most cities have formed or are forming numerous power load-intensive areas. In the past, the power supply from 12/24kV substation lines [or branch lines] to direct users has been unable to meet the requirements of urban development. As a result, a new power supply method has emerged to supply power to users through switches. However, with the intensification of urban densification, some original civil switchgear has been restricted by land and urban planning. Therefore, a more advanced and practical outdoor high-voltage ring box (standardized) has emerged. This product requires no civil construction and occupies a small area. The configuration is very flexible and the power supply method is more reliable. Construction, installation and debugging time are greatly shortened, and the overall cost is reduced.

 With the development of modern industry, the degree of automation and intelligence of electrical control equipment is getting higher and higher. Modern electronic technology, sensor technology, communication technology, and computer network technology are used to monitor, protect, and monitor power equipment under normal and accident conditions. The integration of control and measurement to achieve good management has become an inevitable trend and development direction.

 The outdoor high-voltage ring box (standardized) adopts and learns from foreign advanced technology, integrating 12/24kV switch cabinet, circuit breaker, load switch, current and voltage transformer, 12/24kv power supply PT, switching station FTU, RTU, communication control Terminal (CCu). 12/24kV metering and automatic meter reading, USP power supply and indicating instruments are installed and debugged into a removable, sealed and moisture-proof stainless steel box, thereby realizing the primary and secondary systems in the urban distribution network. Integration and modular assembly shorten the construction cycle and greatly improve the reliability of urban power grid operation.

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