Sealed SF6 Insulation
Uses SF6 gas as the insulation and arc-extinguishing medium in a sealed stainless steel gas tank.
GreenPower
GPR1-12(24)
SF6 Gas Insulated
Ring Main Unit
Rated Voltage12/24 kV
Main Busbar Current630 A
Gas MediumSF6
Protection DegreeEnclosure IP3X, gas tank IP67
Product Overview
GPR1 uses SF6 gas as the insulation medium. SF6 has strong dielectric and arc-extinguishing performance. The internal design is compact and space-saving. The gas tank adopts a stainless steel fully sealed welded structure. The operating mechanism uses spring operation with simple structure and flexible operation. The mechanism includes complete mechanical locking and reliable interlocking. The modular design allows flexible combinations for different distribution schemes.
Modular Compact Design
Combines compact structure, flexible modular configuration, and spring-operated mechanism for distribution applications.
Key Features
Compact Structure
Small overall size helps save installation space and project resources.
Stainless Steel Gas Tank
Primary components and conductors are installed in a sealed welded stainless steel gas tank.
Spring Operating Mechanism
Spring-operated mechanism provides simple structure, flexible operation, and stable operating speed.
Reliable Mechanical Interlocking
Complete mechanical locking and interlocking help prevent misoperation during switching and earthing operations.
Modular Configuration
Modular design supports flexible combinations for different distribution schemes and user requirements.
Low Leakage Performance
Automatic welding and helium leak detection help control the annual SF6 leakage rate to ≤ 0.05%.
30-Year Gas Tank Service Life
Gas tank sealing parts and internal components are designed for long service life and maintenance-free operation within 30 years.
Low-Pressure Operability
The switchgear can still operate normally and achieve rated current opening and closing under zero gauge pressure conditions.
Technical Specifications
| Rated Voltage | 12/24 kV |
|---|---|
| Rated Frequency | 50/60 Hz |
| Rated Current Of Main Busbar | 630 A |
| Rated Current | 630 A (load switch / circuit breaker); combination appliance depends on fitted fuse |
| Rated Short-Circuit Breaking Current | 20/25 kA (circuit breaker); combination appliance depends on fitted fuse |
| Rated Short-Time Withstand Current | 20/25 kA |
| Rated Peak Withstand Current | 50/63 kA |
| 1 min Power Frequency Withstand Voltage | 42/65 kV (phase to phase, phase to earth); 48/79 kV (across open contacts) |
| Lightning Impulse Withstand Voltage | 75/125 kV (phase to phase, phase to earth); 85/145 kV (across open contacts) |
| Auxiliary / Control Circuit Withstand Voltage | 2 kV |
| Mechanical Life | Load switch 5000 operations; circuit breaker 10000 operations |
| Rated Pressure Of SF6 Gas (20℃ gauge pressure) | 0.02 or 0.045 MPa |
| Annual Leakage Rate Of SF6 Gas | ≤ 0.05% |
| Moisture Content Of Inflatable Compartments (20℃) | ≤ 150 ppm |
Ambient Conditions
Altitude
Less than 3000 m.
Ambient Temperature
Maximum +40℃ and minimum -25℃.
Seismic Intensity
Not exceeding 8 degree.
Installation Environment
Suitable for environments that can withstand dust, moisture, and short-term immersion in water.
Outline Dimensions
GPR1 ring main unit is mainly composed of the cabinet body and a sealed stainless steel gas tank. Functional parts such as the operating mechanism box, cable box, and secondary instrument box are separated into independent compartments to help control faults and simplify service access.
The enclosure protection level is IP3X, with IP4X optional, while the stainless steel gas tank and fuse barrel can reach IP67. Modular cabinet construction improves interchangeability and supports different functional combinations.
GPR1-12(24) Non-expandable Type
GPR1-12(24) Expandable Type
Expandable And Outdoor Options
Expandable Series
Supports easy and safe on-site expansion through cabinet merging without gas treatment, special tools, or special foundation preparation.
Outdoor Application
Supports outdoor installation with optional motorized operation and remote control.
Standards And Compliance
| Applicable Standards | IEC 60265-1:1998; IEC 60298:1990; IEC 60694:2002; IEC 62271-100:2012; IEC 62271-102:2012; GB/T 3906-2006; GB/T 3804-2017; GB/T 1984-2014; GB/T 1985-2014; GB/T 11022-2011; GB/T 16926-2009 |
|---|
Typical Applications
Small Distribution Stations
Suitable for small distribution stations and switching stations.
Urban Infrastructure
Applicable in urban residential communities, airports, railways, tunnels, and high-rise buildings.
Industrial And Mining Sites
Particularly suitable for industrial and mining enterprises.
Harsh Environments
Suitable for mountainous areas, plateaus, coastal areas, and polluted environments.
Request Technical Confirmation For GPR1-12(24)
Share required voltage class, project conditions, or ring main unit configuration needs for quotation review.