Product Overview
The 35kV gas-insulated ring main unit (RMU) is a high-end fully insulated, fully sealed high-voltage switchgear. Suitable for 35kV high-voltage AC distribution systems, it is mainly used in urban core power grids, large industrial and mining substations, new energy booster stations, data centers, and key industrial power distribution projects. The equipment integrates circuit switching, ring network connection, overload, short-circuit, and earth fault protection functions. Relying on a sealed gas-filled structure, it achieves stable high-voltage power distribution, effectively isolating fault sections and improving the stability and continuity of high-voltage power supply.
The product strictly adheres to high-voltage power industry and State Grid standards. Adopting a modular integrated structure, it offers strong resistance to environmental interference, maintenance-free operation, and extremely high safety. Featuring excellent insulation performance, strong breaking capacity, stable operation, and wide applicability, it can adapt to complex and harsh indoor and outdoor environments. It is a core choice for 35kV high-voltage power transmission and distribution, grid upgrades, and new energy supporting projects.
Operating Conditions
1. Ambient temperature: -40°C to +55°C, resistant to extreme high/low temperatures and daily temperature fluctuations in harsh conditions.
2. Altitude: ≤1000m; reinforced insulation and anti-pollution flashover configurations available for high-altitude areas.
3. Relative humidity: ≤95% (at 25°C); fully sealed gas compartment structure completely prevents moisture and condensation, eliminating internal insulation failures.
4. Installation site: High-voltage distribution rooms, compact substation enclosures, outdoor substations, industrial high-voltage areas; no violent vibration, no strongly corrosive or explosive dust.
5. Protection rating: IP67 for gas compartment, IP30 for enclosure; dustproof, waterproof, anti-pollution, moisture-resistant, with excellent anti-aging and anti-environmental interference performance.
6. Installation requirements: Floor-mounted fixed installation; cabinets level and stable with reliable grounding; adequate high-voltage safety clearance and heat dissipation/maintenance space reserved.
Technical Parameters
Parameter | Unit | Value |
|---|---|---|
Rated voltage | kV | 35, suitable for 35kV high-voltage distribution systems |
Rated frequency | Hz | 50 |
Rated current | A | 630, suitable for mainstream 35kV high-voltage distribution loads |
Rated short-circuit breaking current | kA | 20, stable and reliable high-voltage fault breaking |
Insulation medium | --- | SF6 gas insulation, excellent high-voltage insulation performance |
Mechanical life | Cycles | ≥5000, withstands frequent high-voltage operations, strong stability |
Service life | Years | ≥20 years, sealed gas compartment with no leakage, long-term stable operation |
Protection rating | --- | IP67 (compartment) / IP30 (enclosure), dustproof, waterproof, anti-pollution, moisture-resistant |
Product Features
1. High-voltage fully insulated design: Core high-voltage components are fully enclosed in the gas compartment, unaffected by external dust, moisture, or condensation, suitable for harsh 35kV high-voltage conditions.
2. Insulation safety and stability: High-purity SF6 gas insulation provides strong high-voltage withstand capability, no leakage or breakdown risk, extremely high safety for high-voltage operation.
3. Comprehensive fault protection: Integrated short-circuit, overload, and earth fault protection with fast response, quickly clearing high-voltage faults to ensure grid stability.
4. High-seal maintenance-free design: Laser-sealed gas compartment with extremely low gas leakage rate, no frequent refilling or maintenance required, significantly reducing operating costs.
5. Integrated design, small footprint: Modular compact structure with neat cabinet layout, effectively saving high-voltage distribution space, suitable for confined substation areas.
6. Multiple anti-misoperation features: Professional high-voltage mechanical interlocking devices prevent incorrect opening/closing and entry into live compartments, ensuring operational safety.
Our Advantages
1. Specialized in the R&D and production of 35kV high-voltage gas-insulated RMUs, with targeted optimization for high-voltage transmission and distribution conditions, suitable for large key power projects.
2. Core components selected from high-voltage grade materials; stringent gas compartment sealing process; factory testing includes withstand voltage, gas tightness, and mechanical operation.
3. Compliant with State Grid high-voltage equipment standards, with complete qualifications and mature processes, meeting acceptance standards for substations, new energy, and industrial and mining high-voltage projects.
4. Support non-standard customization for circuit configurations, intelligent monitoring, remote communication, high-altitude and anti-corrosion requirements, suitable for various high-voltage personalized distribution solutions.
5. Provide specialized high-voltage equipment installation and commissioning, gas tightness testing, and long-term after-sales service, ensuring stable operation of the high-voltage system throughout its lifecycle.
Ordering Guide
Please provide the following information to ensure accurate matching with operating requirements:
1. Specify the system voltage, rated current, number of incoming/outgoing circuits, and high-voltage configuration requirements.
2. Confirm the installation environment and whether special customization for high altitude, heavy pollution, low temperature, or strong corrosion is required.
3. Confirm the operation type and functional requirements: manual, electric, intelligent monitoring, remote communication networking.
4. Confirm whether high-voltage test reports, on-site commissioning guidance, and full lifecycle after-sales service are required.
