AIR-12 Eco-friendly Gas-Insulated Ring Main Unit
AIR-12 is a self-developed, next-generation 12kV medium-voltage gas-insulated switchgear (GIS). By housing multiple functional units and connecting busbars within a fully sealed, laser-welded stainless steel gas tank, it ensures zero exposure of live parts, maximum operating safety, and a highly compact footprint.
Description
Functions and Core Roles
- 100% Eco-Friendly (Zero SF6): Utilizes eco-friendly insulation gas (Dry Air/N2) instead of SF6, ensuring zero greenhouse gas emissions and future-proof regulatory compliance.
- Maintenance-Free & Weatherproof: The IP67-rated sealed enclosure completely isolates live components from moisture, dust, and salt spray. Built to withstand extreme outdoor and harsh environments with zero primary-circuit maintenance required.
- Smart Grid Ready: Factory-integrated with advanced sensors and automation terminals (DTU/FTU) for real-time temperature, pressure monitoring, and remote control capabilities.
Technical Parameters
Product Model: AIR-12 Eco-friendly Gas-Insulated Ring Main Unit
| Item | Unit | Circuit Breaker Cabinet (V) | Load Switch Cabinet (C) |
| Arc Extinction Method | – | Vacuum | Vacuum |
| Insulation Type | – | Environmentally Friendly Gas | Environmentally Friendly Gas |
| Structure Form | – | Common Box / Modular Type | Common Box / Modular Type |
| 1min Phase-to-Phase /Phase-to-Ground
Power Frequency Withstand Voltage Arc-extinguishing chamber, disconnector contact gap |
kV | 42
48 |
42
48 |
| Lightning Phase-to-Phase / Phase-to-Ground
Impulse Withstand VoltageArc Extinction Chamber / Disconnector Break |
kV | 75
85 |
75
85 |
| Partial Discharge Test | PC | ≤20 | ≤20 |
| Rated Current | A | 630, 1250 | 630, 1250 |
| Rated Short-Circuit Breaking Current | kA | 25 | / |
| Rated Short-Circuit Making Current | kA | 63 | 63 |
| Rated Short-Time Withstand Current (Main Circuit) | kA/s | 25/4 | 25/4 |
| Rated Peak Withstand Current (Main Circuit) | kA | 63 | 63 |
| Rated Short-Time Withstand Current (Earthing Switch) | kA/s | 25/4 | 25/4 |
| Rated Peak Withstand Current (Earthing Circuit) | kA | 63 | 63 |
| Rated Cable Charging Breaking Current | A | 25 | 25 |
| Rated Line Charging Breaking Current | A | 10 | 10 |
| Mechanical Life (Operations)Circuit Breaker / Disconnector / Earthing Switch | bout | 10000/3000/3000 | / |
| Load Switch / Disconnector / Earthing Switch | bout | / | 10000/3000/3000 |
| Protection Rating (Enclosure / Cabinet) | – | IP67/IP4X | IP67/IP4X |
| Arc Withstand (Cable Chamber / Switch Chamber) | kA/s | 25/0.5 | 25/0.5 |
| Rated Power Supply Voltage (Secondary Circuit) | – | Manual or AC220V/DC220V/DC48V/DC24 | |
| 1min Power Frequency Withstand Voltage (Secondary Circuit) | kV | 2 | |
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