SF6 Fully Insulated Ring Main Unit
A low- or medium-voltage switchgear direction; cabinet type, circuits and protection configuration are confirmed from project drawings.
A modular ring-main unit with live parts sealed in an SF6 gas tank, configured with load-switch, switch-fuse or circuit-breaker modules.
Product configuration can be tailored to project requirements; please confirm against technical specifications, drawings and delivery conditions.
- Secondary distribution at 12 kV and below
- Ring-main and double-radial supply systems
- Commercial, industrial and high-load-density rural areas
- Composable and extendable functional modules
- Live parts sealed in an independent SF6 gas tank
- Fully insulated silicone-rubber connectors for reduced maintenance demand
Key technical parameters
These specifications support initial product selection. Final configuration is subject to the project specification, drawings and order confirmation.
Parameter note: specifications may vary by model and configuration. Please confirm against the project documentation.
| Item | Parameter details | Notes |
|---|---|---|
| Rated voltage | 12 / 24 kV | Verified |
| Power-frequency withstand voltage | 42 / 50 kV | Verified |
| Lightning impulse withstand | 92/125 or 95/125 kV | Varies by module |
| Rated current | 630/630 or 1250/630 A | Varies by module |
| Mechanical endurance | Approx. 3,000–5,000 operations | Varies by module |
Details to confirm before enquiry
System voltage and primary connection
Circuits, protection and component requirements
Cabinet size, cable entry and quantity
Share your project requirements to receive a suitable proposal.
Please send the model, technical drawings, application or purchase list; we will help match the product configuration.