Product Overview
The 20kV metal-enclosed switchgear is a core complete set of switchgear for medium and high voltage distribution systems. Suitable for 50Hz AC, 20kV power frequency distribution systems, it is widely used in industrial and mining enterprises, industrial parks, urban substations, new energy power stations, and large building power distribution projects. The equipment is primarily used for power distribution, circuit connection/disconnection, overload and short-circuit fault protection. It stably controls high-voltage distribution circuits, effectively preventing the spread of distribution faults and ensuring safe and continuous power supply to high-voltage systems.
The product adopts a fully metal-enclosed modular structure, offering strong overall protection, stable insulation, and safe operation. It is manufactured in strict accordance with national high-voltage electrical standards. Featuring a robust structure, strong breaking capacity, convenient operation and maintenance, and wide adaptability, it is suitable for indoor conventional and complex industrial conditions, making it the mainstream choice for 20kV high-voltage power transmission and distribution projects.
Operating Conditions
1. Ambient temperature: -40°C to +55°C, resistant to seasonal temperature variations, suitable for conventional and extreme indoor conditions.
2. Altitude: ≤1000m; reinforced insulation configurations available for high-altitude areas to meet plateau operation requirements.
3. Relative humidity: ≤95% (at 25°C); moisture-proof and anti-condensation design effectively prevents aging and insulation breakdown of internal components.
4. Installation site: Indoor distribution rooms, substations, industrial equipment rooms; no strongly corrosive gases, no explosive dust, well-ventilated and dry.
5. Protection rating: IP30; fully metal-enclosed structure effectively prevents dust and foreign object ingress, protecting internal high-voltage components.
6. Installation requirements: Floor-mounted fixed installation; cabinets aligned horizontally with reliable grounding; adequate heat dissipation and safe maintenance clearance reserved.
Technical Parameters
Parameter | Unit | Value |
|---|---|---|
Rated voltage | kV | 20, suitable for 20kV high-voltage distribution systems |
Rated frequency | Hz | 50 |
Rated current | A | 630–3150, full current range available as required |
Rated short-circuit breaking current | kA | 20/25/31.5, strong and reliable fault breaking capacity |
Insulation method | --- | Air insulation + composite insulation, stable insulation performance |
Mechanical life | Cycles | ≥10,000, withstands frequent operations, high durability |
Service life | Years | ≥20 years, anti-corrosion and anti-aging enclosure, stable operation |
Protection rating | --- | IP30, dustproof and foreign object proof, suitable for indoor high-voltage conditions |
Product Features
1. Fully enclosed safety protection: Overall metal-enclosed structure with separate compartment isolation effectively eliminates high-voltage electric shock and arc flash hazards, providing extremely high operational safety.
2. Excellent breaking performance: Equipped with high-performance vacuum circuit breakers, offering strong short-circuit breaking capacity and fast response, quickly clearing various high-voltage faults.
3. Stable and reliable insulation: Graded air insulation design combined with high-quality insulation components provides strong voltage withstand capability, ensuring long-term stable operation without breakdown risk.
4. Regular structure, easy maintenance: Modular compartment layout with clearly defined functional areas, easy to pull out and push in, simplifying later inspection and component replacement.
5. Multiple interlock protections: Comprehensive mechanical interlocking devices strictly prevent misoperation such as incorrect opening/closing or opening the door under load, eliminating safety accidents.
6. Wide application scenarios: Standardized cabinet design with strong versatility, suitable for various 20kV indoor high-voltage distribution, power transmission and transformation, and industrial and mining power distribution projects.
Our Advantages
1. Deeply engaged in the field of 20kV high-voltage complete equipment, focusing on standardized production of metal-enclosed switchgear, precisely adapting to medium and high voltage distribution conditions.
2. Precision-welded cabinet construction with thick plates and excellent anti-corrosion treatment; core components selected from top brands; full high-voltage factory testing.
3. Compliant with State Grid high-voltage equipment acceptance standards, with complete qualifications and standardized processes, suitable for municipal, industrial, and new energy key projects.
4. Customizable current ratings, circuit configurations, and intelligent monitoring modules as required, suitable for personalized distribution solutions and old grid renovation projects.
5. Provide one-stop complete set delivery, on-site installation and commissioning guidance, and lifetime technical support, ensuring stable operation of the distribution system throughout its lifecycle.
Ordering Guide
Please provide the following information to ensure accurate matching with operating requirements:
1. Specify the system voltage, rated current, short-circuit breaking current, and cabinet circuit configuration requirements.
2. Confirm the operating conditions and whether enhanced customization for special environments such as high altitude, heavy pollution, or low temperature is required.
3. Confirm whether extended functions such as intelligent monitoring, remote communication, and microcomputer protection are required.
4. Confirm whether complete set commissioning, technical guidance, test reports, and full lifecycle after-sales service are required.
