DQK-24 Gas-Insulated Ring Main UnitMedium-Voltage Switchboard
The DQK-24 gas insulated RMU is part of the advanced DQS series, offering excellent performance in a small footprint. It is maintenance-free and designed for simple, safe operation. This unit is particularly suitable for enhancing urban power systems, industrial substations, and high-rise buildings, providing a reliable and space-efficient switching solution.
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Small size, maintenance-free, and simple operation
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The primary part is not affected by the environment and can be used in harsh environmental conditions
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Modular design, which can be combined according to the design plan, and is flexible in expansion
Core Advantages & Features
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Fully Enclosed Gas Chamber DesignAll high-voltage parts are sealed in a stainless-steel chamber, ensuring environmental resilience, safety, and maintenance-free operation.
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Compact & Durable ConstructionMade from 3mm 304 stainless steel and welded with TRUMPF's 3D laser system for exceptional strength and sealing.
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High Airtightness and Long LifeSEILER leak detection ensures <0.01% annual leak rate with a 30-year lifespan.
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Insulated and Shielded BusbarsFully shielded extended busbars provide excellent reliability and protection.
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Error-Proof InterlockingSimple interlocking mechanisms effectively prevent operational errors.
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High Durability Mechanisms5,000 load switch operations and 10,000 circuit breaker operations ensure longevity.
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Advanced Load Switch-Fuse DesignHandles 24kV, 1400A current transfers safely and efficiently.
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Automated ManufacturingFactory automation supports intelligent switching and ensures consistent quality.
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Automated AssemblyFull-automatic assembly line ensures product consistency.
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Technical Parameters
| Basic Parameters | |
|---|---|
| Rated voltage | 24 kV |
| Rated frequency | 50 Hz |
| Rated current | C Unit: 630 A, F Unit: 125 A, V Unit: 630 A |
| Rated power frequency withstand voltage | 65/79 kV (Isolation gap) |
| Rated lightning impulse withstand voltage | 125/145 kV (Isolation gap) |
| Mechanical life | C Unit: 5000 times, F Unit: 5000 times, V Unit: 10000 times |
Rated short-circuit breaking current | F Unit: 31.5 kA, V Unit: 20 kA |
| Rated making current | C Unit: 50 kA, F Unit: 80 kA, V Unit: 50 |
| Rated transfer current | F Unit: 1400 A |
| Main circuit rated short-time withstand current (4s) | 20/25 kA |
| Main circuit rated peak withstand current | 50/63 kA |
| Internal arc classification | AFLR, 20 kA, 1s |
| Rated operating pressure (20°C gauge) | 0.03 MPa |
| Minimum operating pressure (20°C gauge) | 0.02 MPa |
| Enclosure protection rating | IP41 |
| Gas tank protection rating | IP67 |
| Switchgear protection rating | IP54 |
| Switchroom impact resistance rating | IK10 |
| Annual gas leakage rate | ≤0.01% |
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