0102030405
GTXGN-12 AC Metal Solid Insulated Ring Main Unit - Reliable Power Distribution Solution from China Suppliers and Factory
Product Categories
C Module
Load Switch with Ground Assembly
CB Module
Load Switch without Ground Assembly
V Module
Circuit Breaker with Ground Assembly
VB Module
Circuit Breaker without Ground Assembly
VZ Module
Circuit Breaker Link Switch
F Module
Load Switch + Fuse Composite Apparatus Switch Assembly
G Module
Isolating Switch Assembly
Model and Definitions
Application Conditions
Environmental Temperature
-45℃ to +45℃
Relative Humidity
Maximum Average Daily ≤95%, Monthly ≤90%
Altitude
≤ 4000 meters
Seismic Resistance
8 degrees
Level of Protection
Live Parts: IP67 | Fuse Tubes: IP67 | Housing: IP4X
Standards for Implementation
IEC62271-1-2007 "High-Voltage Switchgear and Controlgear - Part 1: General Specifications"
IEC620071-200-2003 "AC Metal-Enclosed Switchgear and Controlgear for 1-52kV"
GB3906-2006 "AC Metal-Enclosed Switchgear and Controlgear for 3.6-40.5kV"
GB/T11022-1999 "Common Technical Conditions for High-Voltage Switchgear and Controlgear Standards"
GB1984-2003 "High-Voltage AC Circuit Breakers"
GB1985-2004 "High-Voltage AC Disconnectors and Earthing Switches"
GB3804-2004 "High-Voltage AC Load Switches for 3.6kV to 40.5kV"
DL/T404-2007 "AC Metal-Enclosed Switchgear and Controlgear for 3.6kV-40.5kV"
DIJT5932006 "Common Technical Conditions for High-Voltage Switchgear and Controlgear Standards"
Q/GDW730-2012 "Technical Conditions for 12kV Solid Insulated Ring Main Units"
Technical Parameters
Parameters of Switchgear
| No. | Units | Parameters | |||
|---|---|---|---|---|---|
| Nominal Voltage | KV | 12 | |||
| Rated Frequency | Hz | 50 | |||
| Rated Currency | A | 630 | 1250 | ||
| Nominal Insulation Level | Power Frequency Withstand Voltage | Break Point | KV | 48 | |
| Phase-to-Phase | KV | 42 | |||
| Relative | KV | 42 | |||
| Lighting Impulse Withstand Voltage | Break Point | KV | 85 | ||
| Phase-to-Phase | KV | 75 | |||
| Relative | KV | 75 | |||
| Rated Short-circuit Breaking Current(1s) | KA | 25 | 31.5 | ||
| Rated Short-time Withstand Current(4s) | KA | 25 | 31.5 | ||
| Rated Peak Withstand Current(lp) | KA | 36 | 80 | ||
| Rated Circuit Making Current(Peak)(1ma) | KA | 36 | 80 | ||
| Level of Protection for Shell | - | IP4X | |||
| Operation Mode | - | Spring-operated | |||
Isolation Ground Switch Technical Parameters
| No. | Items | Units | Parameters | ||
|---|---|---|---|---|---|
| 1 | Nominal Voltage | kV | 12 | ||
| 2 | Rated Currency | A | 630 | 1250 | |
| 3 | 4S Rated Short-time Withstand Current (Valid Value) | kA | 25 | 31.5 | |
| 4 | Rated Peak Withstand Current (Peak) | kA | 63 | 80 | |
| 5 | 1min Power Frequency Withstand Voltage | Phase-to-Phase and Ground | kV | 42 | |
| Isolation Break Point | 48 | ||||
| 6 | Rated Lighting Impulse Withstand Voltage | Phase-to-Phase and Ground | kV | 75 | |
| Isolation Break Point | 85 | ||||
| 7 | Main Switch Machinery Service Life | Time | 3000 | ||
| 8 | Ground Switch Machinery Service Life | Time | 3000 | ||
Safety and Environmental Protection
Isolation Knife Visible Break Point
The cabinet features a prominent visible window for the Isolation Break Point, allowing personnel to observe the three working positions: isolation engaged, isolation disengaged, and grounding engaged. This design facilitates the on-site staff in determining the position of the isolation knife, ensuring a high level of safety.
Internal Arc Design
Internal Arc Pressure Valve: When an arc occurs inside the product, the pressure will be released through this valve, directing the arc away into the cable trench to prevent accidental injury to operators.
Green and Environmentally Friendly
Designed with environmentally friendly materials, this product does not use SF6 gas as an arc extinguishing medium or insulation, thus avoiding environmental pollution. The one-time circuit design minimizes contact points, ensuring low energy consumption during operation.
External Dimensions
| Model | Width (mm) | Depth (mm) | Height (mm) |
|---|---|---|---|
| Load Switch PT Cabinet (CPT) | 500 | 950 | 1650 |
| Circuit Breaker Cabinet (VB) | 400 | 950 | 1650 |
| Circuit Breaker Cabinet(V) | 400 | 950 | 1650 |
| Circuit Breaker Bus Coupling Cabinet (VZ) | 400 | 950 | 1650 |
| Busbar Lifting Cabinet(G) | 400 | 950 | 1650 |
| Load Switch Fuse Combination Cabinet (F) | 500 | 950 | 1650 |
Frequently Asked Questions (FAQ)
What module configurations are available for this switchgear?
The switchgear includes C Module (Load Switch with Ground Assembly), CB Module (Load Switch without Ground Assembly), V Module (Circuit Breaker with Ground Assembly), VB Module (Circuit Breaker without Ground Assembly), VZ Module (Circuit Breaker Link Switch), F Module (Load Switch + Fuse Composite Apparatus), and G Module (Isolating Switch Assembly).
Does this switchgear use SF6 gas for insulation?
No, it is built with green and environmentally friendly materials and does not use SF6 gas for insulation or arc extinguishing, eliminating SF6-related greenhouse emissions.
What are the rated voltage and current specifications?
The system operates at a nominal voltage of 12 kV (50 Hz rated frequency) with rated current choices of 630 A and 1250 A.
What is the operating temperature range and altitude limit?
The equipment is designed to operate reliably within an environmental temperature range of -45℃ to +45℃ and at an altitude of up to ≤4000 meters.
How does the switchgear ensure personnel safety during operation?
Safety is maintained via a visible break point window showing all 3 working positions, an internal arc pressure relief valve venting safely into the cable trench, and IP67-rated live parts and fuse tubes.
What is the mechanical service life of the switch mechanisms?
Both the main switch and the ground switch have a rated mechanical service life of 3,000 operations.