Do you really understand the solid-state ring main unit?
1.Basic Definition of Solid-State Ring Main Unit
The solid insulated switchgear is fully named the solid insulated ring main unit. And our Derui Electric Company is a manufacturer of solid insulated switchgear that adopts epoxy resin and other solid insulating materials.It fully encapsulates core electrical components such as vacuum interrupters, disconnectors, and busbars, replacing traditional SF₆ gas as the insulating and arc-extinguishing medium. It is an environmentally friendly smart grid power equipment Smart Rmu.
- Core Features of the Solid-Insulated Ring Main Unit
Environmental protection: Does not use SF₆ gas no greenhouse effect/leakage risk, materials are recyclable, and meets the "dual carbon" requirements.
Insulation performance: The insulation strength of epoxy resin 24-35kV/mm is more than 10 times that of air; the protection level can reach IP67, and it is not affected by environmental humidity, corrosion, or low temperatures.
Structural advantages: Modular design, 30-60% smaller in size than traditional equipment; supports flexible combination and is suitable for space-constrained sites.Operation and maintenance characteristics: The fully sealed structure achieves "maintenance-free" operation; the maintenance cycle is extended to more than 8 years, and the failure rate is less than 0.2%.The solid insulated switchgear of our Derui Electri Company perfectly integrates all the above features.
3.Main Functions of the Solid-Insulated Ring Main Unit
It is an ring network power distribution system that serves as the core equipment for power distribution and protection. It is used in 10-35kV voltage-level ring network/terminal power distribution scenarios to realize power distribution, fault isolation, and equipment protection, supporting stable power supply for urban power grids, industrial parks, new energy power stations, etc.
Derui Electri Company'sSolid Insulated Switchgear, It can operate in extreme environments temperature: -45°C to +70°C; altitude: up to 4000m; strong corrosion/sandstorm, etc., making it suitable for remote areas, wind farms, coastal areas, etc. It improves power supply reliability: fault isolation time <0.1 seconds, power recovery time reduced to within 3 minutes; combined with the intelligent monitoring system for temperature, partial discharge, etc., the power supply reliability can be increased to 99.999%.
It reduces the total cost: maintenance-free features reduce operation and maintenance costs; compact size saves installation space; environmental protection design reduces environmental costs.
- Typical Application Scenarios of the Solid-Insulated Ring Main Unit
(1)Urban distribution networks, commercial complexes, data centers.
(2)Industrial parks, steel, chemical, and heavy industries.
(3)New energy power stations, photovoltaics, and rail transit.
(4)Outdoor Ring Main Units in harsh environments high altitude, low temperature, coastal areas, etc.
In practical applications, solid-insulated switchgear has achieved full-scenario coverage. Currently, solid-insulated switchgear has been applied in 12 ultra-high-voltage projects under the "14th Five-Year Plan" for power grids, Derui Electric Company covering 28 provincial administrative regions across the country, and is exported to Southeast Asia, the Middle East, etc.
Intelligent upgrading has become a new development direction for the industry: mainstream solid-insulated ring main unitshave been integrated with intelligent sensors and edge computing modules, which can monitor 12 parameters such as temperature, Solid Insulated Switchgear humidity, and partial discharge in real time. Through the IoT platform, remote early warning is realized, with a fault early warning accuracy rate of 98%, improving operation and maintenance efficiency by 5 times. Industry enterprises are actively deploying cutting-edge technologies such as digital twins and degradable insulating materials to promote products toward more intelligent and environmentally friendly directions.
Industry experts said that with the advancement of the "dual carbon" goals and the acceleration of smart grid construction, the market demand for solid-insulated Ring Main Units will continue to expand. In the future, driven by technological innovation and policy guidance, solid-insulated ring main units will further break through cost and process bottlenecks, and Derui Electric Company's solid insulated switchgear be more widely applied in scenarios such as new energy power stations, rail transit, and commercial complexes, contributing to the high-quality development of the power industry with new functions.
Should you have any needs, please feel free to contact us at China Derui Electric Co., Ltd. With superior quality and comprehensive services, you can rest assured when choosing us.