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China Suppliers Factory GTXGN-12 AC Metal Solid Insulated Ring Main Unit for Reliable Power Distribution
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
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Environmental Temperature: -45℃ to +45℃
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Humidity: Maximum Average Relative Humidity, Daily Average≤95%, Monthly Average≤90%
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Altitude:≤4000 meters
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Seismic Resistance: 8 degrees
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Level of Protection: Live Parts Sealed IP67, Fuse Tubes IP67, Switch Cabinet Housing IP4X
Standards for Implementation
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IEC62271-1-2007 "High-Voltage Switchgear and Controlgear - Part 1: General Specifications"
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IEC620071-200-2003 "AC Metal-Enclosed Switchgear and Controlgear for 1-52kV"
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GB3906-2006 "AC Metal-Enclosed Switchgear and Controlgear for 3.6-40.5kV "
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GB/T11022-1999 "Common Technical Conditions for High-Voltage Switchgear and Controlgear Standards "
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GB1984-2003 "High-Voltage AC Circuit Breakers"
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GB1985-2004 "High-Voltage AC Disconnectors and Earthing Switches "
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GB3804-2004 "High-Voltage AC Load Switches for 3.6kV to 40.5kV "
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DL/T404-2007 "AC Metal-Enclosed Switchgear and Controlgear for 3.6kV-40.5kV "
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DIJT5932006 "Common Technical Conditions for High-Voltage Switchgear and Controlgear Standards"
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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 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
Q
What categories of switches are available in this product line?
The switches are categorized into several modules: 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).
Q
What are the environmental temperature and altitude limits for operating these switches?
The switches are designed to operate in environmental temperatures ranging from -45℃ to +45℃, and at altitudes of up to 4000 meters.
Q
What is the protection level rating of the live parts and housing?
The live parts and fuse tubes feature a sealed protection level of IP67, while the switch cabinet housing is rated at IP4X.
Q
Are these switches environmentally friendly?
Yes. The product is designed with environmentally friendly materials and does not use SF6 gas as an arc extinguishing medium or insulation. Additionally, its one-time circuit design minimizes contact points to ensure low energy consumption during operation.
Q
How does the internal arc design protect operators?
The cabinet is equipped with an Internal Arc Pressure Valve. If an arc occurs inside, the valve releases the pressure and directs the arc away into the cable trench, keeping operators safe from accidental injury.
Q
How can operators visually verify the position of the isolation knife?
The switch cabinet includes a prominent visible window for the Isolation Break Point. This allows on-site staff to easily observe the three working positions: isolation engaged, isolation disengaged, and grounding engaged.