Technical Parameters
| Parameter | Unit | Value |
| Rated Voltage | kV | 3.6 / 7.2 / 12 |
| Rated Frequency | Hz | 50 / 60 |
| Rated Current | A | 630 / 1250 / 1600 / 2000 / 2500 / 3150 |
| Rated Short-Circuit Breaking Current | kA | 20 / 25 / 31.5 / 40 |
| Rated Short-Circuit Closing Current | kA | 50 / 63 / 80 / 100 |
| Rated Short-Time Withstand Current (4s) | kA | 20 / 25 / 31.5 / 40 |
| Rated Peak Withstand Current | kA | 50 / 63 / 80 / 100 |
| 1min Power Frequency Withstand Voltage (Phase-Phase/Phase-Earth) | kV | 42 |
| 1min Power Frequency Withstand Voltage (Between Open Contacts) | kV | 48 |
| Lightning Impulse Withstand Voltage (Peak) (Phase-Phase/Phase-Earth) | kV | 75 |
| Lightning Impulse Withstand Voltage (Peak) (Between Open Contacts) | kV | 85 |
| Auxiliary Circuit 1min Power Frequency Withstand Voltage | kV | 2 |
| Rated Current (A) | Short-Circuit Breaking Current (kA) | Short-Time Withstand Current (4s) (kA) | Peak Withstand Current(kA) | Typical Application |
| 630 | 20 | 20 | 50 | Small to medium distribution |
| 1250 | 25 / 31.5 | 25 / 31.5 | 63 / 80 | General distribution |
| 1600 | 31.5 | 31.5 | 80 | Large distribution |
| 2000 | 31.5 / 40 | 31.5 / 40 | 80 / 100 | Heavy duty distribution |
| 2500 | 40 | 40 | 100 | Industrial applications |
| 3150 | 40 | 40 | 100 | Main incoming |
| Configuration | Width W(mm) | Depth D (mm) | Height H (mm) |
| Standard Configuration | 900 | 1000 | 2200 |
| Wide Configuration | 1100 | 1200 | 2400 |
Product Features
| Feature | Description |
| Box-Type Fixed Structure | The cabinet frame is welded from high-quality angle steel with a box-type fixed structure. The breaker is fixedly installed in the middle/lower part of the cabinet, making installation, debugging, and maintenance convenient . |
| "Five-Prevention" Interlock | Equipped with a reliable forced mechanical interlocking device using the JSXGN interlock mechanism, achieving complete "five-prevention" functions: preventing misoperation of the circuit breaker, preventing closing with earthing switch closed, preventing opening with load, preventing entry into live compartments, and preventing mis-entry into live intervals . |
| Functional Compartment Separation | The busbar compartment, cable compartment, and relay compartment are completely separated by metal plates. The top of the busbar compartment is equipped with a pressure release device to prevent fault spread . |
| Rotary Disconnector | Equipped with GN30-10 rotary disconnector, which allows safe entry into the breaker compartment for maintenance while the main busbar remains energized. The disconnector is operated from the right side of the cabinet front . |
| Observation Window | The door is equipped with observation windows, allowing clear view of the disconnector isolation gap and cable terminal connection points . |
| Earthing Busbar | A through-type earthing busbar runs through the entire row of switchgear at the cabinet bottom, ensuring reliable earth connection . |
Applications
| Application | Recommended Current Rating | Key Advantages |
| Power Plants | 1250A-3150A | High reliability, large capacity, arc protection |
| Substations | 630A-3150A | Flexible configuration, easy operation |
| Industrial & Mining Enterprises | 630A-2500A | Strong overload capacity, high short-circuit withstand |
| High-Rise Buildings | 630A-2000A | Compact size, space saving |
| Switching Stations (with RMU) | 630A-1250A | Flexible combination, small footprint |
| Frequent Operation Locations | 630A-1250A | High mechanical life, reliable breaking |
Normal Use Conditions
| Condition | Requirement |
| Ambient Temperature | Maximum: +40°C, Minimum: -15°C; 24h average ≤ +35°C |
| Altitude | ≤ 1000m (Customizable for up to 4000m) |
| Relative Humidity | Daily average ≤ 95%; Monthly average ≤ 90% |
| Seismic Intensity | ≤ 8 degrees |
| Installation Location | Indoor, no fire, explosion, heavy pollution, chemical corrosion, or severe vibration hazards |
Customization Services
Sline provides comprehensive customization services for XGN66-12 switchgear based on your project requirements:
| Customization Option | Description |
| Rated Current | 630A ~ 3150A optional |
| Short-Circuit Breaking Current | 20kA / 25kA / 31.5kA / 40kA optional |
| Circuit Breaker Brand | ZN63A (VS1-12) standard, other mainstream brands optional |
| Protection Device | Conventional protection or microcomputer integrated protection system |
| Busbar System | Single busbar / single busbar with bypass / double busbar |
| Altitude | Standard ≤1000m, high altitude type ≤4000m |
| Smart Monitoring | Optional smart monitoring system supports remote communication |
| Special Environment | High altitude, coastal salt fog, etc. |
