DQV-12 Indoor Smart High-Voltage Vacuum Circuit BreakerIntelligent Medium-Voltage Breakers
The DQV series is a new-generation indoor high-voltage vacuum circuit breakers, independently developed to international leading standards. Compliant with latest national standards (GB/T1984, DL/T403) and IEC62271-100, ensuring global stable operation. Widely used in power plants, power systems, metallurgy, petrochemicals, environmental protection, rail transit, municipal engineering, high-altitude areas, etc.
Core Advantages & Features
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High Compatibility & InterchangeabilityHigh degree of serialization for compatibility and strong interchangeability with mainstream industry products.
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Efficient Low-Loss MechanismMature spring operating mechanism with a simple structure, high transmission efficiency, low energy loss, and low noise.
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Modular Easy MaintenanceModular circuit board for easy replacement; self-locking connectors ensure highly reliable electrical connections.
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Solid-Insulated Main CircuitThe main circuit utilizes solid-sealed pole columns for solid insulation.
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Optional Smart MonitoringOptional smart components with an online monitoring expert diagnostic system.
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Technical Parameters
| Basic Parameters | |
|---|---|
| Rated voltage | 12 kV |
| Rated frequency | 50/60 Hz |
| Phase spacing | 150 mm, 210 mm, 275 mm |
| Cubicle dimensions | 650 mm, 800 mm, 1000 mm |
| Rated current | 630 A, 1250 A, 1600 A, 2000 A, 2500 A, 3150 A, 4000 A, 5000 A |
| Rated short-circuit breaking current (effective value) | 25 kA, 31.5 kA, 40 kA, 50 kA |
| Rated short-circuit making current (peak) | 63 kA, 80 kA, 100 (110) kA, 125 (137) kA |
| Rated power frequency withstand voltage | 42 kV |
| Rated lightning impulse withstand voltage | 75 kV |
Rated short-circuit current breaking times | 60 / 50（40 kA）/ 30（50 kA）times |
| Mechanical life | 50000 / 30000 (40 kA and above) times |
DC component percentage at contact separation | 52% |
| Rated back-to-back capacitor bank switching current | 800 A |
Partial discharge | 5 pC |
Product Documents
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Product Brochure
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DQV Series
2025-09-02
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