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China GTXGN-12 AC Metal Solid Insulated Ring Main Unit - Reliable Suppliers and Factory for High-Voltage Solutions
Product Categories
The switches are categorized based on type into Load Switch with Ground Assembly (C Module), Load Switch without Ground Assembly (CB Module), Circuit Breaker with Ground Assembly (V Module), Circuit Breaker without Ground Assembly (VB Module), Circuit Breaker Link Switch (VZ Module), Load Switch + Fuse Composite Apparatus Switch Assembly (F Module), and Isolating Switch Assembly (G Module).
Model and Definitions
Application Conditions
Environmental Temperature:
-45℃ to +45℃
-45℃ to +45℃
Humidity:
Max Average Relative Humidity, Daily Average≤95%, Monthly Average≤90%
Max Average Relative Humidity, Daily Average≤95%, Monthly Average≤90%
Altitude:
≤4000 meters
≤4000 meters
Seismic Resistance:
8 degrees
8 degrees
Level of Protection:
Live Parts Sealed IP67, Fuse Tubes IP67, Switch Cabinet Housing IP4X
Live Parts Sealed IP67, Fuse Tubes IP67, Switch Cabinet 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 lmpulse 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. | ltems | 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 | |
| lsolation Break Point | 48 | ||||
| 6 | Rated Lighting lmpulse Withstand Voltage | Phase-to-Phase and Ground | kV | 75 | |
| lsolation 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 & Environmental 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
What module options are available for these product categories?
The switches are categorized based on type into Load Switch with Ground Assembly (C Module), Load Switch without Ground Assembly (CB Module), Circuit Breaker with Ground Assembly (V Module), Circuit Breaker without Ground Assembly (VB Module), Circuit Breaker Link Switch (VZ Module), Load Switch + Fuse Composite Apparatus Switch Assembly (F Module), and Isolating Switch Assembly (G Module).
What are the required environmental application conditions?
The equipment operates under environmental temperatures of -45℃ to +45℃, maximum daily relative humidity ≤95% (monthly ≤90%), altitudes up to 4000 meters, seismic resistance of 8 degrees, and protection levels of IP67 for live sealed parts/fuse tubes and IP4X for the cabinet housing.
How does the switchgear design ensure operator safety during an internal arc event?
The switchgear includes an Internal Arc Pressure Valve. In the event of an internal arc, the pressure is released through this valve, directing the arc away into the cable trench to prevent accidental injury to nearby operators.
Why is this product considered green and environmentally friendly?
It uses environmentally friendly materials and completely avoids SF6 gas as an arc extinguishing medium or insulation. Additionally, the one-time circuit design reduces contact points, leading to lower energy consumption during operations.
What is the mechanical service life of the main and grounding switches?
Both the Main Switch and the Ground Switch have a rated mechanical service life of 3000 operations.
What are the dimensions of the Circuit Breaker Cabinet (VB)?
The Circuit Breaker Cabinet (VB) has a width of 400 mm, a depth of 950 mm, and a height of 1650 mm.