GPR1 12kV 24kV SF6 Gas Insulated Ring Main Unit
GPR1 series gas insulated ring main unit uses SF6 gas as the insulation medium. SF6 gas has strong electronegativity, high dielectric strength, and insulation strength 2~3 times that of air. It is non-toxic, odorless, non flammable, and non explosive. It has excellent arc extinguishing and insulation performance, allowing the load switch/circuit breaker to quickly extinguish the arc after breaking the current. Its internal design has a compact structure and small volume, saving space and resources. The gas tank adopts a stainless steel welded fully sealed structure. The operating mechanism adopts a spring type, with a simple structure and flexible operation, and the operating speed is not affected by the size of manpower. The mechanism has complete mechanical locking and reliable interlocking. Adopting modular design, it can be flexibly combined into various distribution schemes to meet the diverse needs of different occasions and users.
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GPR1 series gas insulated ring main unit uses SF6 gas as the insulation medium. SF6 gas has strong electronegativity, high dielectric strength, and insulation strength 2~3 times that of air. It is non-toxic, odorless, non flammable, and non explosive. It has excellent arc extinguishing and insulation performance, allowing the load switch/circuit breaker to quickly extinguish the arc after breaking the current. Its internal design has a compact structure and small volume, saving space and resources. The gas tank adopts a stainless steel welded fully sealed structure. The operating mechanism adopts a spring type, with a simple structure and flexible operation, and the operating speed is not affected by the size of manpower. The mechanism has complete mechanical locking and reliable interlocking. Adopting modular design, it can be flexibly combined into various distribution schemes to meet the diverse needs of different occasions and users.
| Rated voltage | 12/24kV |
| Rated frequency | 50/60Hz |
| Rated current | 630A |
| Rated active load breaking current | 630A |
| Rated closed circuit breaking current | 630A |
| Rated no-load transformer breaking current | 16A |
| Rated cable-charging breaking current | 30A |
| Mechanical life | 5000~10000times |
| Rated pressure of SF6 gas (20℃ gauge pressure) | 0.02 or 0.045MPa (During SF6 arc extinguishing) |
| Annual leakage rate of SF6 gas | ≤0.05% |
| Compliance | Meets international safety standards such as ISO, IEEE |
The main components and springs of the mechanism are made of imported materials to ensure reliable operation. The operating life of the load switch reaches 5000 times, and the operating life of the circuit breaker reaches 10000 times.
The processing technology of injection molded parts and sealing parts is advanced and strictly tested, with a service life of ≥ 30 years.
Adopting advanced equipment such as ABB automatic welding robots and Leybold helium leak detection system, ensuring an annual relative leakage rate of SF6 gas of ≤ 0.05%.
By using vacuum dehumidification technology, the micro water content of SF6 gas can be controlled to ≤ 150 ppm.
The inflation pressure is low, and under zero gauge pressure conditions, the switchgear can operate normally and achieve rated current opening and closing.
The harmonious unity of fixed and flexible expansion allows for the configuration of multiple modules in the same SF6 insulated gas chamber, or the use of extended busbars to connect the switchgear, achieving a semi modular structure.
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.
GPR1 ring main unit is suitable for the 3.6~12kV three-phase AC 50/60Hz power system as a means of receiving and distributing electrical energy. It is widely used in oil-free, safe and reliable small distribution stations, switching stations, urban residential communities, airports, railways, tunnels, and high-rise buildings. Especially suitable for various places with harsh environmental conditions and polluted environments 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
