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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 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
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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.
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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.
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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)
Q1: What types of modules are available in these product categories?
A: The switches are categorized 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).
Q2: What environmental conditions are required for operating this switchgear?
A: The equipment is designed to operate in temperatures ranging from -45℃ to +45℃, with a maximum daily average relative humidity of ≤95% (monthly average ≤90%), at altitudes up to 4000 meters, and with seismic resistance up to 8 degrees.
Q3: What are the protection levels for the switch cabinet and live parts?
A: The live parts and fuse tubes are sealed to IP67 standards, while the switch cabinet housing has a protection level of IP4X.
Q4: Does this product use SF6 gas for insulation?
A: No, this product is designed with green, environmentally friendly materials and does not use SF6 gas as an arc extinguishing medium or insulation, thereby avoiding environmental pollution.
Q5: How does the internal arc design protect operators?
A: It features an Internal Arc Pressure Valve. If an arc occurs internally, the pressure is released through this valve and directed away into the cable trench, preventing accidental injury to operators on site.
Q6: What are the standard dimensions for the Circuit Breaker Cabinet (VB)?
A: The Circuit Breaker Cabinet (VB) has a width of 400 mm, a depth of 950 mm, and a height of 1650 mm.