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1. Fully Sealed & Environmentally Resilient Design
Stainless Steel Gas Tank: All high-voltage live components are hermetically sealed within a 3mm 304 stainless steel gas tank, welded by a state-of-the-art 3D five-axis laser system imported from TRUMPF, Germany. This precision welding guarantees exceptional airtightness, structural integrity, and aesthetic appeal.
German-Made Quality Assurance: Utilizing SEILER’s fully automated helium leak detection equipment, the gas tank achieves an industry-leading leakage rate of <0.01% per year, ensuring a lifespan exceeding 30 years with zero maintenance. The IP67-rated gas tank and IP4X-rated outer shell shield the RMU from dust, water, and corrosive elements, enabling stable operation in extreme temperatures (-40°C to +70°C).
2. Compact & Modular Flexibility
Space-Saving Design: With a compact footprint (360/425mm width x 780mm depth x 1865mm height), the DQS RMU is ideal for space-constrained installations, such as urban substations, data centers, and underground facilities.
Scalable Configuration: Its modular architecture allows seamless customization, enabling quick assembly of load switches, fuses, and circuit breakers to meet any power distribution requirement. Whether for ring networks, radial systems, or complex grid setups, the DQS RMU adapts effortlessly.
3. Enhanced Safety & Operational Excellence
Interlock & Insulation Protection: The extended busbars are fully insulated and shielded, minimizing partial discharge risks. Simple yet effective mechanical and electrical interlocks prevent misoperation, safeguarding both equipment and personnel.
High-Performance Operation: The reliable operating mechanism ensures a mechanical lifespan of 10,000 cycles for circuit breakers and load switches, surpassing industry standards. The load switch-fuse combination units achieve transfer currents of 12kV/1750A and 24kV/1400A, guaranteeing efficient fault protection.
4. Intelligent & Factory-Integrated Solutions
Automated & Smart Grid Ready: Offering factory-integrated automation, the DQS RMU supports intelligent monitoring of critical parameters, including temperature, breaker status, and mechanical performance. This enables remote control, predictive maintenance, and seamless integration with smart grid systems.
Consistent Quality Assurance: Manufactured on fully automated assembly lines, each unit undergoes rigorous quality checks, ensuring uniform performance and reliability across the entire product range.
Parameter | Unit | 12kV Model | 24kV Model |
Rated Voltage | kV | 12 | 24 |
Rated Frequency | Hz | 50 | 50 |
Rated Current | A | 630 | 630 |
1min Power Frequency Withstand Voltage | kV | 42/48 | 65/79 |
Lightning Impulse Withstand Voltage | kV | 75/85 | 125/145 |
Gas Tank Protection Level | - | IP67 | IP67 |
Outer Shell Protection Level | - | IP4X | IP4X |
Mechanical Life (Circuit Breaker/Load Switch) | Cycles | 10,000/10,000 | 10,000/10,000 |
Internal Arc Resistance | - | AFLR, 20kA, 0.5s | AFLR, 20kA, 0.5s |
Rated Gas Pressure (20°C, Gauge) | MPa | 0.03 | 0.03 |
Annual Gas Leakage Rate | %/Year | ≤0.01% | ≤0.01% |
Dimensions (Width x Depth x Height) | mm | 360/425 x 780 x 1865 | 360/425 x 780 x 1865 |
· Urban Power Grids: Ideal for compact substations and underground cable networks in densely populated areas, optimizing space and ensuring reliable power supply.
· Industrial Facilities: Provides corrosion-resistant, maintenance-free solutions for factories, mines, and chemical plants, minimizing downtime and enhancing productivity.
· Data Centers & Commercial Buildings: Supports 24/7 operation with intelligent monitoring, ensuring uninterrupted power for critical infrastructure.
· Renewable Energy Integration: Facilitates seamless connection of solar, wind, and microgrid systems, enabling efficient power distribution and grid stability.
· Transportation Hubs: Meets stringent safety standards for power distribution in metro, railway, and airport applications, ensuring robust performance in demanding environments.
Q1: How often does the DQS RMU require maintenance?
A1: The DQS RMU is fully maintenance-free. Its sealed SF6 gas system and long-life operation mechanisms eliminate the need for routine servicing, reducing lifecycle costs significantly.
Q2: Can the RMU withstand extreme weather conditions?
A2: Yes. With an IP67-rated gas tank and IP4X-rated outer shell, the RMU is impervious to dust, water immersion, and temperature fluctuations (-40°C to +70°C), ensuring reliable operation in any environment.
Q3: Is customization available for specific project requirements?
A3: Absolutely. The modular design allows for flexible configuration of load switches, fuses, and circuit breakers, tailored to your unique power distribution needs.
Q4: What safety features protect against electrical faults?
A4: The RMU features fully insulated busbars, mechanical/electrical interlocks, and an internal arc resistance rating of AFLR 20kA/0.5s, effectively containing faults and safeguarding personnel.
Q5: Does the RMU comply with international standards?
A5: Yes. The DQS RMU meets global standards, including IEC 62271 and relevant national regulations, ensuring compatibility with projects worldwide.