DQG-12 Solid Insulated Ring Main Unit (SF₆-Free)Medium-Voltage Switchboard
The DQG-12 is a compact, maintenance-free solid-insulated RMU delivering exceptional safety and reliability. Unaffected by altitude, it excels in high-altitude applications while suiting urban grids, high-rise buildings and industrial plants. With simplified controls and a robust design, it ensures stable, efficient operation across diverse environments, standing as a dependable choice for critical power distribution points.
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It performs stably regardless of altitude, ideal for high-altitude applications
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With a compact, maintenance-free design and stable, reliable performance, it ensures optimal efficiency across diverse environments
Core Advantages & Features
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Fully Insulated & Sealed DesignLive components are epoxy-encapsulated for full insulation and sealing. Main circuit has IP67 protection, resistant to condensation, short-term flooding and DIN 47636-compliant bushings, enabling safe, reliable fully insulated/shielded separable cable terminations.
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Standard Modular ConfigurationModules including load switch (C), circuit breaker (V), sectionalizing switch (S), metering (M), and PT units (PT) can be flexibly combined to form diverse RMU configurations.
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Flexible Expansion CapabilityModules can be interconnected through dedicated busbar connectors, enabling various combinations to meet complex regional power distribution needs.
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Technical Parameters
| Basic Parameters | |
|---|---|
| Rated voltage | 12 kV |
| Rated frequency | 50 Hz |
| Rated current | 630 A |
| Rated power frequency withstand voltage | 42/48 kV (Isolation gap) |
| Rated lightning impulse withstand voltage | 75/85 kV (Isolation gap) |
| Partial discharge (14.4 kV) | ＜10 pC |
| Mechanical life | 10000 times |
Rated short-circuit breaking current | 20 kA |
| Rated making current | 50 kA |
| Main circuit rated short-time withstand current | 20 kA/4s |
| Main circuit rated peak withstand current | 50 kA |
| Internal arc classification | AFLR, 25 kA, 1s |
| Enclosure protection degree | IP4X |
| Switchgear protection degree | IP67 |
Product Documents
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Product Brochure
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DQG-12 Series Solid-Insulated Ring Main Unit
2025-11-25
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