Solid Insulated Ring Main Unit

In the procurement of power distribution projects, the risk of leakage of gas insulation equipment and environmental protection pressure have always been a major concern.Kechang's equipment adopts an all-solid insulation design. The core conductive components and the vacuum arc extinguishing chamber are cast and formed through the APG process. SFG gas is not used at all, which eliminates the insulation failure and greenhouse effect caused by gas leakage from the root cause.The epoxy resin insulation material has high mechanical strength, which can greatly reduce the safe distance between the phases, make the equipment more compact, and withstand high temperatures of 180℃. It is not easy to age and crack during long-term operation.This SF6-free solid insulated switchgear design is particularly suitable for European and North American projects with strict environmental protection requirements, and it also avoids the maintenance costs of late gas monitoring and gas replenishment.

Your project may be distributed in high-altitude mountainous areas, coastal salt spray areas or dusty industrial areas. Environmental erosion of equipment is a big problem.The equipment adopts a fully sealed structure, the core components have a protection level of IP67, and the shell is made of thickened anticorrosive galvanized steel plate, which is sealed and welded to effectively block the intrusion of dust, water vapor, and corrosive gases.It can work stably in a wide temperature range of -45℃ to 45℃, and there is no need for additional protection in an environment with a relative humidity of 95% within 4000 meters above sea level.Whether it is a cold northern mining area or a humid southern coastal project, this IP67 harsh environment switchgear can operate reliably for a long time, allowing you to achieve standardized procurement in complex environmental projects.

The tight construction cycle of the site and the possible increase in the later load are issues that need to be considered in advance when purchasing.Kechang adopts standardized module design and prefabricates different functional units into independent modules. Only the insulated busbars need to be spliced on site, and the installation and commissioning can be completed in 1-2 days.If the load increases in the later stage, the module can be directly added to expand the capacity, without changing the original main circuit, and there is no need to replace the equipment as a whole.For projects such as urban distribution network transformation and phased construction of industrial parks, this flexible design can effectively shorten the construction period and reduce the initial investment, which perfectly matches the application needs of modular expandable switchgear.

The risk of misoperation of electrical equipment is a safety point that must be paid attention to when purchasing.The equipment is equipped with a clear three-station knife gate visualization window, which can directly observe the state of the fracture and avoid operating accidents caused by errors in judgment.At the same time, a complete mechanical interlocking mechanism is built in, and the operation sequence is strictly limited. Only in the state of the main switch, the isolation/grounding switch can operate, and misoperation is eliminated from the physical level.The touchable surfaces of the equipment are shielded and grounded, which can effectively prevent personal electric shock. The relevant design has passed IEC 60076 and UL safety certification, even if it is used in densely populated commercial buildings, hospitals and other places, it can be completely assured.

Traditional equipment requires regular inspections, cleaning and component replacement, and long-term operation and maintenance costs remain high.The core components of this equipment are fully sealed and cast, not affected by external environmental influences, and do not require regular cleaning and maintenance; the spring operating mechanism has been rigorously tested, and the mechanical life has reached more than 30,000 times, and the whole process is free of lubrication.With the built-in intelligent monitoring module, it collects data such as operating temperature and switching status in real time, and automatically alarms when it is over temperature. Remote monitoring can be achieved through the MODBUS/RS485 protocol, reducing the workload of on-site inspection by 80%.The expected service life of the equipment is 25 years, with a 3-year warranty and a complete quality inspection report, which makes the later operation and maintenance more worry-free.

The voltage levels, functional configurations, and installation spaces of different projects vary greatly, and it is difficult for standardized products to match exactly.Kechang can customize the configuration of 12kV-24kV voltage level and 630A-3150A rated current according to your specific needs, and can flexibly choose manual or electric operating mechanism, adjust cabinet size and wiring method.The engineering team will issue a detailed technical plan and quotation within 48 hours to ensure that the customized plan does not delay the progress of the project.All products have passed CE, UL, RoHS certification, and comply with IEC and IEEE standards. No matter which region your project is in, you can successfully pass the local compliance audit to make the procurement process smoother.