Common-Box Compact Design
Uses a compact common-box structure to save space in indoor medium-voltage distribution applications.
GreenPower
GPR2-12(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
GPR2 is a complete set of indoor power distribution devices for three-phase AC 50/60Hz systems. It is a new generation common-box gas-insulated closed switchgear. It adopts SF6 gas as insulation and arc-extinguishing medium. It has compact internal design, small size, and space-saving structure. The gas tank is welded stainless steel with a fully sealed structure. The operating mechanism is spring type with simple structure, flexible operation, and stable speed. The mechanism has reliable mechanical locking and interlocking. An expandable version is available with reserved expansion interfaces to reduce initial user investment.
Sealed SF6 Insulation
Adopts SF6 gas in a sealed stainless steel gas tank for insulation and arc-extinguishing performance.
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 stainless steel gas tank.
Spring Operating Mechanism
Spring-operated mechanism provides simple structure, flexible operation, and stable operating speed.
Reliable Mechanical Interlocking
Mechanical locking and interlocking help prevent misoperation during switching and earthing operations.
Visual Earthing System
The grounding switch status can be clearly observed through the visual earthing system and transparent window.
Expandable Configuration
Reserved expansion interfaces support future network expansion and reduce initial investment pressure.
30-Year Maintenance-Free Gas Tank
The sealed gas tank and its internal components are designed for long service life and maintenance-free operation.
Low Leakage Performance
Automatic welding and leak-detection processes help control annual SF6 leakage rate to ≤ 0.1%.
Technical Specifications
| Rated Voltage | 12 / 24 kV |
|---|---|
| Rated Frequency | 50 / 60 Hz |
| Main Busbar Rated Current | 630 A |
| Rated Current | Load switch 630 A; combination electrical appliance depends on fuse; breaker 200 / 630 A |
| Rated Short-Circuit Breaking Current | 12 kV: 31.5 kA / 20 kA; 24 kV: 31.5 kA / 16 kA |
| Rated Transfer Current | 2200 A (12 kV); 1400 A (24 kV) |
| Rated Short Circuit Duration | 3 s |
| Rated Short-Time Withstand Current (RMS) | 20 kA |
| Rated Peak Withstand Current | 50 kA |
| Load Switch And Earthing Switch Rated Short-Circuit Close Current (Peak) | 50 kA |
| Power Frequency Withstand Voltage (1 min) | 12 kV: 42 / 48 kV; 24 kV: 50(65) / 64(79) kV |
| Lightning Impulse Withstand Voltage | 12 kV: 75 / 85 kV; 24 kV: 95(125) / 110(145) kV |
| Rated Active Load Breaking Current | 630 A |
| Rated Closed Loop Breaking Current | 630 A |
| Rated No-Load Transformer Breaking Current | 16 A |
| Rated Cable Charging Breaking Current | 30 A |
| Mechanical Endurance | 5000 operations |
| SF6 Gas Rated Pressure (20℃ gauge pressure) | 0.02~0.03 MPa |
| Annual Leakage Rate Of SF6 Gas | ≤ 0.1% |
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.
Cabinet Structure
GPR2 ring main unit is mainly composed of the cabinet body and a sealed stainless steel gas tank. The cabinet is divided into the operating mechanism box, cable box, secondary instrument box, and other independent compartments to help control faults and simplify functional separation.
Busbars, load switch, circuit breaker, and connecting conductors are installed in a sealed stainless steel gas tank using SF6 gas as the insulating and arc-extinguishing medium. The enclosure protection level is IP3X, while the gas tank reaches IP67.
Outline Dimensions
GPR2 outline dimensions are provided for both non-expandable and expandable configurations. The expandable type keeps a similar installation basis while introducing dimensional differences for left or right and double extension arrangements.
GPR2-12(24) Non-expandable Type
GPR2-12(24) Expandable Type
Expandable And Outdoor Options
Expandable Series
Allows easy and safe on-site expansion through merged cabinets without gas handling or special tools.
Outdoor Application
Supports outdoor use with optional motorized operation and remote control.
Standards And Compliance
| Applicable Standards | IEC 62271-100:2012; IEC 62271-102:2012; IEC 62271-200; IEC 60694:2002; IEC 60298:1990; IEC 60265-1:1998; GB 3906-2006; GB 3804-2004; GB 1984-2003; GB 16926-2009; GB 1985-2004; GB 3309-1989; GB/T 11022-2011; DL/T 791-2011 |
|---|
Typical Applications
Small Distribution Stations
Suitable for small power distribution stations and opening and closing stations.
Urban Infrastructure
Applicable in urban residential quarters, 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 other harsh or polluted environments.
Request Technical Confirmation For GPR2-12(24)
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