DR-GTXGN-12 Solid Insulation Ring Main Unit - Reliable Power Distribution Solution from China Suppliers & Factory
Model and meaning
Work environmental conditions
When the work environmental conditions can not meet the requirements above, the user shall consult with the manufacturer.
Safety and protection
With an obvious visible cutout window in front of the cabinet, it is convenient and safe for the personnel on site to check the three positions such as the insulation closing position, insulation breaking position and grounding closing position and confirm the insulation knife position.
Internal arcing pressure valve; when any arcing occurs in the product, the pressure will be relieved from the pressure relief valve and the arcing will be discharged to the cable trench to prevent any injury to the operator.
With environment-friendly materials in design, SF6 gas isn’t used as the arc extinguishing medium and insulation, without pollution to the environment, the primary circuit has minimum-contact design to ensure low energy consumption in operation.
Execution standards
Main technical parameters (whole switchgear)
| Name | Unit | Parameter | |
|---|---|---|---|
| Rated voltage | kV | 12 | |
| Rated current | A | 630 | |
| Rated short-time withstand current (4s) | kA | 25 | |
| Rated peak withstand current | kA | 50 | |
| Rated short-circuit closing current (peak) | kA | 50 | |
| Rated active load breaking current | A | 630 | |
| Rated closed loop breaking current | A | 630 | |
| Rated cable charge breaking current | A | 10 | |
| Rated breaking transfer current of combined appliances | A | 3700 | |
| 1min power frequency withstand voltage | Phase-to-phase, phase-to-ground, vacuum breaking | kV | 42 |
| Insulation breaking | kV | 48 | |
| Lightning impact withstand voltage | Phase-to-phase, phase-to-ground, vacuum breaking | kV | 75 |
| Insulation breaking | kV | 85 | |
| Mechanical life | Circuit breaker | Time | 10000 |
| Insulation knife, grounding knife | Time | 3000 | |
| Protection grade | IP4X | ||
| Shell protection grade | IP4X | ||
| Partial discharge | pc | ≤20 (Measured at 1.2Ur) | |
Frequently Asked Questions (FAQ)
The switchgear is designed to operate in ambient temperatures ranging from -10°C to +25°C for indoor use, and from -60°C to +60°C for outdoor applications.
No, this environment-friendly design does not use SF6 gas as the arc extinguishing medium or insulation. It utilizes green materials and features a minimum-contact primary circuit design to guarantee low energy consumption and zero environmental pollution.
The standard maximum installation altitude is 3000 meters. If your working environmental conditions exceed this limit, please consult directly with the manufacturer.
The switchgear is built with an internal arcing pressure valve. In the event of an internal arc fault, the built-up pressure is safely discharged through the valve into the cable trench, keeping operators on site protected from injury.
The circuit breaker has a mechanical life of 10,000 operations, while the insulation knife and grounding knife are rated for 3,000 operations.
This equipment complies with several prominent standards, including IEC 62271-1-2007, IEC 620071-200-2003, GB 3906-2006, GB/T 11022-2011, and DL/T 404-2007, ensuring it meets strict global and regional performance criteria.