Product introduction
The Aierway HXGN-12 is a classic, reliable, and cost-effective air-insulated ring main unit (RMU) designed for 12kV medium-voltage secondary distribution networks. As a member of the widely recognized “HXGN” product family in the Chinese market, it adheres to standard design principles for metal-enclosed, compartmentalized switchgear, offering a proven solution for load switching, isolation, and protection in ring main and radial feeder applications.
Key Features
1. Compact & Modular Design
– Space-saving, modular structure suitable for urban and industrial sites with limited installation space.
– Flexible configurations allow for customization according to specific network layouts.
2. Robust Metal Enclosure
– Fully sealed, corrosion-resistant metal housing ensures operator safety and equipment durability.
– Meets IP3X or higher protection standards, preventing contact with live parts and ingress of foreign objects.
Technical Highlights
– Rated Voltage: 12kV
– Rated Current:Up to 630A or 1250A (feeder dependent)
– Short-Circuit Breaking Capacity: Typically 20kA–25kA
– Insulation Medium: Air/SF6 hybrid or full air-insulated options
– Operating Mechanism: Manual, motorized, or remote-operated options available
Technical data table
| No. | Item | Unit | Parameter |
|---|---|---|---|
| 1 | Rated Voltage | kV | 12 |
| 2 | Rated Frequency | Hz | 50 |
| 3 | Main Busbar Rated Current | A | 630 |
| 4 | Main Circuit & Earth Circuit Rated Short-Time Withstand Current / Duration | kA/s | 20/3, 20/20 |
| 5 | Main Circuit & Earth Circuit Rated Peak Withstand Current | kA | 50 |
| 6 | Main Circuit & Earth Circuit Rated Short-Circuit Making Current | kA | 50 |
| 7 | Load Switch Full Capacity Breaking Times | Times | 100 |
| 8 | Fuse Breaking Current | kA | 31.5, 40, 50 |
| 9 | Mechanical Life | Times | 2000 |
| 10 | 1min Power Frequency Withstand Voltage (RMS) Phase-to-Earth / Isolation Gap | kV | 42/48 |
| 11 | Lightning Impulse Withstand Voltage (Peak) Phase-to-Phase, Phase-to-Earth / Isolation Gap | kV | 75/85 |
| 12 | Secondary Circuit 1min Power Frequency Withstand Voltage | kV | 2 |
Outline and dimensions of installation
