GPR2 12kV 24kV SF6 Gas Insulated Ring Main Unit
GPR2 gas insulated ring main unit (hereinafter referred to as GPR2 ring main unit) is a complete set of indoor power distribution devices with three-phase AC 50/60Hz. It is a new generation of common-box gas-insulated closed switchgear in China. Its technology absorbs the advanced advantages of similar products at home and abroad, and meets the requirements of domestic users in terms of insulation.
- Overview
- Recommended Products
GPR2 gas insulated ring main unit (hereinafter referred to as GPR2 ring main unit) is a complete set of indoor power distribution devices with three-phase AC 50/60Hz. It is a new generation of common-box gas-insulated closed switchgear in China. Its technology absorbs the advanced advantages of similar products at home and abroad, and meets the requirements of domestic users in terms of insulation. GPR2 ring main unit is equipped with SF6 load switch or circuit breaker with international advanced level.
GPR2 ring main unit adopts SF6 gas as insulation and arc extinguishing medium. SF6 gas has strong electronegativity, high dielectric strength, and the dielectric strength is 2~3 times that of air. It is non-toxic, odorless, non-flammable, non-explosive, and has excellent arc extinguishing and insulation properties, making the load switch/circuit breaker extinguish the arc quickly after breaking the current.
Its internal design is compact and small, saving space and resources. The gas tank is welded with stainless steel and has a fully sealed structure. The operating mechanism adopts spring type, with simple structure and flexible operation, and the operating speed is not affected by the human strength. The mechanism has perfect mechanical locking and reliable interlocking. The modular design can be flexibly combined into various power distribution schemes to meet the various needs of different occasions and different users.
At the same time, in order to meet the needs of power grid development and reduce the initial investment cost of users, our company has developed an expandable GPR2 ring main unit, and reserved expansion interfaces for users to choose and use.
| Rated voltage | 12/24kV |
| Rated frequency | 50/60Hz |
| Rated current | 630A |
| Rated active load breaking current | 630A |
| Rated closed loop breaking current | 630A |
| Rated no-load transformer breaking current | 16A |
| Rated cable charging breaking current | 30A |
| Mechanical endurance | 5000times |
| Rated gas pressure (20℃ gauge pressure) | 0.02~0.03MPa |
| Annual leakage rate of SF6 gas | ≤0.1% |
| Compliance | Meets international safety standards such as ISO, IEEE |
The main parts and springs of the mechanism are imported materials to ensure reliable operation, and the operating lifetime of the load switch and circuit breaker can reach 5000 times.
The injection molding parts and sealing parts have advanced processing technology, and have been strictly tested, and the service lifetime is ≥ 30 years.
Advanced equipment such as ABB automatic welding robot and Leybold helium leak detection system are used to ensure that the annual relative leakage rate of SF6 gas is less than or equal to 0.1%.
Using vacuum dehumidification technology, the micro-water content of SF6 gas can be controlled to be less than or equal to 150ppm.
The three-position straight cylinder blowing load switch can easily break the 2200A transfer current in the application of the combined electrical unit.
The inflation pressure is low, only the gauge pressure is 0.02MPa. And under the rated working condition of zero gauge pressure, the switchgear can operate normally and can realize 10 times of rated current switching.
The circuit breaker adopts a three-position gas blowing arc extinguishing and magnetic swirl arc extinguishing integrated arc extinguishing chamber, and the breaking and isolation functions are performed synchronously.
User-friendly, visual grounding system. The opening and closing status of the grounding switch can be clearly observed through the transparent observation window.
Altitude: Less than 3000m
Ambient temperature: Maximum +40℃ , Minimum -25℃
Earthquake intensity: Not exceeding 8 degree
Use in environments that can withstand dust, moisture, and short-term immersion in water.
Note: When the actual use environment conditions are inconsistent with the above conditions, please consult with our company.
GPR2 ring main unit is suitable for 3.6~24kV three-phase AC 50/60Hz power system, as the use of receiving and distributing electric energy.It is widely used in oil-free, high-safety and reliable small power distribution stations, opening and closing stations, urban residential quarters, airports, railways, tunnels and high-rise buildings, etc. It is especially suitable for various places with harsh or dirty environmental conditions such as industrial and mining enterprises, mountainous areas, plateaus, and coastal areas.
GreenPower provides professional smart switchgear solutions. Contact us immediately for free consultation and quotation. Our professional team will provide you with full service and technical support throughout the process.
Email: [email protected]
Tel: +86-18989782765
Fax: 057785500968
