Technical Parameters
| Parameter | Specification |
| Rated Voltage | 12kV / 24kV / 36kV / 40.5kV |
| Rated Frequency | 50Hz / 60Hz |
| Rated Current | 630A / 1250A / 2000A / 2500A / 3150A / 4000A |
| Rated Short-Time Withstand Current | 20kA / 25kA / 31.5kA / 40kA / 50kA (3秒 / 3 Seconds) |
| Rated Peak Withstand Current | 50kA / 63kA / 80kA / 100kA / 125kA |
| Rated Insulation Level | Power Frequency Withstand: 42kV / 65kV / 95kV |
| Lightning Impulse Withstand: 75kV / 125kV / 185kV | |
| Protection Class | Enclosure: IP4X / IP5X |
| Gas Tank: IP67 | |
| Insulation Medium | SF6 Gas / Eco-Friendly Gas(N2, Air, N2+Air, C4/CO2) |
| Gas Tank Pressure | 0.02 ~ 0.05 MPa（Relative Pressure） |
| Annual Leakage Rate | ≤ 0.1% |
| No. | Rated Voltage (kV) | Rated Current (A) | Short-Time Withstand Current (kA/3s) | Width (mm) | Depth (mm) | Height (mm) |
| 1 | 12 | 630 | 20 | 350 | 800 | 1800 |
| 2 | 12 | 630 | 25 | 350 | 800 | 1800 |
| 3 | 12 | 630 | 31.5 | 400 | 800 | 1800 |
| 4 | 12 | 1250 | 20 | 400 | 800 | 1800 |
| 5 | 12 | 1250 | 25 | 400 | 800 | 1800 |
| 6 | 12 | 1250 | 31.5 | 450 | 800 | 1800 |
| 7 | 12 | 2000 | 31.5 | 500 | 1000 | 2000 |
| 8 | 12 | 2500 | 31.5 | 600 | 1000 | 2000 |
| 9 | 12 | 3150 | 40 | 600 | 1200 | 2200 |
| 10 | 24 | 630 | 20 | 450 | 900 | 1900 |
| 11 | 24 | 630 | 25 | 450 | 900 | 1900 |
| 12 | 24 | 1250 | 25 | 500 | 900 | 1900 |
| 13 | 24 | 2000 | 25 | 600 | 1100 | 2100 |
| 14 | 36 | 630 | 20 | 600 | 1200 | 2200 |
| 15 | 36 | 1250 | 25 | 600 | 1200 | 2200 |
| 16 | 40.5 | 630 | 20 | 700 | 1400 | 2400 |
| 17 | 40.5 | 1250 | 25 | 700 | 1400 | 2400 |
| 18 | 40.5 | 2000 | 31.5 | 800 | 1500 | 2500 |
| Unit Type | Function | Main Components |
| Incoming Unit | Power input & protection | Circuit Breaker, Disconnector, Earthing Switch |
| Outgoing Unit | Branch distribution & protection | Circuit Breaker, Disconnector, Earthing Switch, CT |
| Bus-Tie Unit | Bus connection | Circuit Breaker, Disconnector, Earthing Switch |
| Metering Unit | Energy metering | CT、PT / Current Transformer, Potential Transformer |
| PT Unit | Voltage measurement, operating power | Potential Transformer, Fuse |
| Busbar Unit | Busbar connection | Busbar |
Structural Features
| Structure | Description | |||||
| Draw-Out Trolley | Circuit breaker trolley located in the middle of the cabinet, can be easily inserted and withdrawn for convenient maintenance and replacement. | |||||
| Metal-Clad | Fully enclosed metal structure with independent compartments for each function, effectively preventing fault spread. | |||||
| Five-Protection Interlock | Complete mechanical and electrical interlocking devices prevent misoperation and ensure personnel safety. | |||||
| Modular Design | Modular design of functional units allows flexible configuration and strong scalability. | |||||
Applications
| Application | Recommended Voltage Level | Key Advantages |
| Urban Distribution Networks | 12kV / 24kV | Compact structure, space saving |
| Commercial Complexes | 12kV / 24kV | Maintenance-free, stable operation |
| Industrial Parks | 12kV / 24kV / 36kV | High reliability, suitable for harsh environments |
| Rail Transit | 12kV / 36kV | Vibration resistant, maintenance-free |
| Data Centers | 12kV / 24kV | High reliability for critical loads |
| PV Power Plants | 12kV / 36kV / 40.5kV | Suitable for outdoor environments, maintenance-free |
| Wind Power | 12kV / 36kV | Vibration resistant, suitable for offshore environments |
| High Altitude Areas | 12kV / 24kV / 36kV | Unaffected by altitude, stable performance |
Selection Guide
| Rated Voltage | Applicable Scenario |
| 12kV | Urban Distribution, Industrial & Commercial Distribution |
| 24kV | Industrial Parks, New Energy Projects |
| 36kV | Large Industries, Rail Transit |
| 40.5kV | High Voltage Distribution, Large Substations |
Determine switchgear rated current based on total load power and simultaneity factor:
| Total Load Power (kW) | Recommended Rated Current (A) |
| ≤ 400 | 630 |
| 400-800 | 1250 |
| 800-1300 | 2000 |
| 1300-1600 | 2500 |
| 1600-2000 | 3150 |
| 2000-2600 | 4000 |
| System Short-Circuit Capacity (MVA) | Recommended Short-Time Withstand Current (kA) |
| ≤ 200 | 20 |
| 200-300 | 25 |
| 300-400 | 31.5 |
| 400-500 | 40 |
| 500-600 | 50 |
For detailed technical drawings or customized solutions, please contact the Sline technical team. We will provide one-on-one engineer-led service throughout the process.
