1 Introduction​Common insulation methods for 10kV medium-voltage ring main units (RMUs) include gas insulation, solid insulation, and air insulation.• Gas insulation typically uses SF₆ as the insulating medium. However, a single SF₆ molecule has a greenhouse effect 25,000 times greater than a CO₂ molecule, and SF₆ persists in the atmosphere for 3,400 years, posing significant environmental risks. Medium-voltage RMUs are widely distributed, making SF₆ recovery difficult and costly if handled

Ⅰ. Market Background and Demand Analysis​National Strategic Drivers​​Renewable Integration: ​Compact substations​ are critical for distributed solar/wind farms under Vision 2030, enabling ​rapid grid connection​ (<72hr deployment) and ​modular capacity scaling​ (1–10MW units).​Mega Project Acceleration: NEOM/Qiddiya projects prioritize ​prefabricated compact substations​ for ​30–40% faster deployment​ vs. traditional solutions, with ​IP54-rated enclosures​ minimizing dust ingress

1. Introduction​ROCKWILL Electric presents its advanced YB Series Prefabricated (Compact) Substation solution, designed to deliver safe, reliable, and efficient power distribution for diverse applications. Engineered with modularity, factory prefabrication, and intelligent integration, this solution optimizes space, reduces deployment time, and ensures long-term operational stability. Compliant with international standards (IEC, CEI, GB, JB, DL) and offering customization, ROCKWILL provides comp

1. Integrated Architecture with Edge-Cloud Collaboration​​Edge Layer: Deploy IoT sensors (e.g., wireless temperature sensors for switchgear monitoring, JN2201 inclination sensors with IP68/IP69K protection) to collect real-time data on equipment status (temperature, vibration, leakage) and environmental parameters (humidity, gas concentration).​Cloud Platform: Centralize data storage and AI analysis for predictive maintenance and cross-site benchmarking.​2. AI-Driven Predictive Maintenance​​Faul

Ⅰ. Problem Context​As a core component in urban power distribution networks, ring main units (RMUs) are widely used in residential areas, factories, and public buildings due to their compact structure, low cost, and high reliability. However, internal equipment failures or arc faults may generate high-temperature, high-pressure gas, leading to cabinet explosions that endanger personnel and equipment. While traditional sealed designs maintain insulation integrity, they fail to rapidly release sud

According to insulation type, ring main units (RMUs) can be categorized as gas-insulated or air-insulated. The former installs primary circuit components in a sealed metal enclosure filled with low-pressure gas (primarily SF₆ or mixed gases) as the insulating medium, using cable terminals for incoming and outgoing lines. Due to superior insulation, compact size, and modular design, they are widely used in 10kV outdoor distribution substations and prefabricated transformer stations. However, thei

Ⅰ. Technical Bottlenecks of SF₆ Substitution​​Insulation Medium Performance Gap​o Dried Air/N₂ insulation strength is only 1/3 of SF₆, requiring expansion of contact gap from 60mm to ≥150mm.o Conventional spring mechanisms lack energy to drive rapid closure of large gaps, easily causing contact ablation due to pre-strike.o Synthetic gases (e.g., C4+CO₂) decompose under arcing, leading to irreversible insulation degradation.​Mechanical Structural Limitations​o National Grid standardization fix

Introduction:​​10kV gas-insulated RMUs are widely used due to their numerous advantages, such as being fully enclosed, possessing high insulation performance, requiring no maintenance, having a compact size, and offering flexible and convenient installation. At this stage, they have gradually become a critical node in urban distribution network ring-main power supply and play a significant role in the power distribution system. Problems within gas-insulated RMUs can severely impact the entire di

With the rapid development of the power industry, the ecological concept of low-carbon, energy-saving, and environmental protection has been deeply integrated into the design and manufacturing of power supply and distribution electrical products. The Ring Main Unit (RMU) is a key electrical device in distribution networks. Safety, environmental protection, operational reliability, energy efficiency, and economy are inevitable trends in its development. Traditional RMUs are primarily represented

The combination of ​Solid Insulation Assist + Dry Air Insulation​ represents the development direction for 24kV RMUs. By balancing insulation requirements with compactness and employing solid auxiliary insulation, insulation tests can be passed without significantly increasing phase-to-phase and phase-to-ground dimensions. Encapsulating the pole column solidifies the insulation for the vacuum interrupter and its connecting conductors.Maintaining the ​24kV outgoing busbar phase spacing at 110mm,

Integrated Latin America Solution: Climate-Shielded Pad-Mounted Transformers with Localization AdvantageⅠ. Analysis of Market Demand and Challenges in Latin America​​Accelerated Energy Transition​Latin America's renewable energy share exceeds the global average (hydropower 57% + rapid expansion of wind and solar), but frequent droughts are forcing countries to reduce hydropower dependence, promoting distributed integration of solar PV and wind. ​Pad mounted transformers​ need to be compatible wi

Ⅰ. Challenges and Needs of Mexico's Urban Distribution Network​​Rapid Urbanization and Surging Power Loads​Mexico's urbanization rate has reached 80%, with its population highly concentrated in central areas like Mexico City and Guanajuato State, resulting in high load density in the distribution network.Industrial expansion (especially automotive and electronics manufacturing) drives electricity demand. For example, Central Mexico has attracted over USD 10 billion in foreign investment, requiri