DQC-12 Gas-Insulated Digital SwitchgearMedium-Voltage Switchboard
The DQC-12 indoor cabinet-type gas-insulated switchgear (C-GIS) integrates solid insulation, gas insulation, and vacuum interruption technologies. It is a compact and highly reliable solution for applications like compact substations and large commercial complexes.
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It features a direct-acting three-position mechanism for stable performance and a long lifespan
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The modular operating mechanism is maintenance-free and easily replaceable
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Customized design meets various non-standard requirements
Core Advantages & Features
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Reliable Gas InsulationGas-insulated HV components ensure environmental durability and operational reliability.
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Compact Structural DesignThe space-saving structure allows installation in limited spaces.
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Interface Insulation & ExpansionInterface insulation simplifies cabinet expansion and component connection.
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Comprehensive Interlock ProtectionCircuit breaker and disconnector interlocks prevent misoperation, enhancing safety.
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Solid Insulated BusbarsInter-cabinet connections use solid busbars, eliminating gas handling requirements.
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Precision Welding & Leak DetectionLaser welding and helium testing guarantee airtightness and reliability.
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Maintenance-Free SystemNo regular servicing required, reducing life-cycle costs.
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Technical Parameters
| Basic Parameters | |
|---|---|
| Rated voltage | 12 kV |
| Rated frequency | 50 Hz |
| Rated current | 630/1250/1600/2000/2500/3150 A |
| Rated power frequency withstand voltage | 42/48 kV (Isolation gap) |
| Rated lightning impulse withstand voltage | 95/110 kV (Isolation gap) |
| Mechanical life | 1000 times |
Rated short-circuit breaking current | 25/31.5/40 kA |
| Main circuit rated short-time withstand current (4s) | 25/31.5/40 kA |
| Main circuit rated peak withstand current | 63/80/100 kA |
| Internal arc classification | AFLR, 25/31.5/40 kA, 1s |
| Rated operating pressure (20°C gauge) | 0.02 MPa |
| Minimum operating pressure (20°C gauge) | 0.01 MPa |
| Enclosure protection class | IP42 |
| Gas compartment protection class | IP67 |
| Annual gas leakage rate | ≤0.01% |
Product Documents
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Product Brochure
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DQC-12 Gas Insulated Digital Switchgear
2025-09-04
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