HBXGN2 12 Energy Saving Eco Friendly Gis Ring Main Unit
The HBXGN2-12-630/20 energy-saving and environmentally-friendly ring main unit – circuit breaker cabinet is an eco-friendly switchgear independently developed by our company based on the development trends of the power industry and our years of experience in distribution network field service and design & construction.
Product Overview
The HBXGN2-12-630/20 energy-saving and environmentally-friendly ring main unit - circuit breaker cabinet is an eco-friendly switchgear independently developed by our company based on the development trends of the power industry and our years of experience in distribution network field service and design & construction. It is designed to provide high-quality, environmentally-friendly products for China's distribution networks by digesting and assimilating domestic and international technologies and design concepts. This product features reasonable design, reliable power supply, compact structure, easy installation, flexible operation, small size, and high cost performance. It is suitable for three-phase AC 50Hz distribution systems with a rated voltage of 12kV and is especially suitable for small secondary substations, switches, industrial and mining enterprises, urban residential areas, airports, railways, tunnels, and high-rise buildings as equipment for receiving and distributing electrical energy.
Suitable locations: Distribution centers of smart grids, urban distribution networks, building complexes, industrial enterprises, and box-type substations.
Technical features: Upholds a green and environmentally-friendly design concept in both concept and approach.
Market prospects: SF6-free or low-SF6 switchgear represents the future trend of technological development.
Technical Parameters
| Project | Unit | Circuit breaker unit | Load switch unit |
|---|---|---|---|
| Rated voltage | kV | 12 | |
| Rated frequency | Hz | 50 | |
| Rated current | A | 630 | |
| Power frequency withstand voltage | kV | Ground and phase to phase | |
| Between fractures | |||
| 42 | |||
| 48 | |||
| Lightning impulse withstand voltage | kV | Ground and phase to phase | |
| Between fractures | |||
| 75 | |||
| 85 | |||
| Rated short-time withstand current and duration | kA | Main circuit | |
| Grounding circuit | |||
| 20/4s | |||
| 17.4/2s | |||
| Rated peak withstand current | kA | Main circuit | |
| Grounding circuit | |||
| 50 | |||
| 43.5 | |||
| Rated short-circuit making current (peak) | kA | 50 | |
| Rated short-circuit breaking current | kA | 20 | / |
| Rated short-circuit breaking current breaking times | Times | 30 | / |
| Rated operating sequence | O-0.3S-CO-180S-CO | ||
| Rated cable / line charging breaking test | C2 level | / | |
| Out of phase grounding fault breaking current | kA | 17.4 | / |
| Rated active load breaking current | A | / | 630 |
| Rated closed-loop breaking current | A | / | 630 |
| Rated cable charging and breaking test | A | / | 10 |
| 5% Rated active load breaking current | A | / | 31.5 |
| Closing times of grounding switch | 5 | ||
| 回路电阻 Loop resistance | μΩ | ≤ 140 | |
| Rated gas pressure (20 °C gauge pressure) | MPa | 0.02 | |
| Mechanical life | Times | vacuum switch | |
| Isolating switch | |||
| Earthing switch | |||
| 10000 | |||
| 3000 | |||
| 3000 | |||
| Degree of protection | Shell | ||
| Gas box | |||
| IP4X | |||
| IP67 | |||
| Operating power supply | V | AC220/DC220/DC110/DC48/DC24 | |
| Rated annual air leakage rate | % | ≤ 0.1 | |
| Cabinet size (single circuit) | mm | 420×822×1420 | |
| Withstand internal arc fault | kA/s | 20/0.5 | |
| Moisture content in dry air | ppm | ≤ 150 | |