Product introduction
The Aierway 12kV Center Distance 310mm is a premium, high-performance switchgear solution designed for demanding applications where maximum safety margins, superior dielectric performance, and enhanced thermal management are critical requirements. With an extended 310mm phase-to-phase center distance, this product offers the highest level of reliability and operational safety in the 12kV switchgear range, making it ideal for critical infrastructure, heavy industrial, and high-reliability utility applications.
Design Features
1.Busbar System
– 310mm Spacing: Optimal for maximum dielectric strength and thermal performance.
– High-Conductivity Copper: Electrolytic copper with tin or silver plating.
– Flexible Connections: Accommodate thermal expansion and seismic movements.
2.Circuit Breaker Modules
– Vacuum Circuit Breakers: With enhanced dielectric and interrupting capabilities.
– Condition Monitoring: Integrated sensors for contact wear, mechanism timing, and temperature.
3.Insulation System
– Enhanced Clearances: Significantly exceed standard requirements.
– Specialized Insulation: Composite materials for improved performance.
– Partial Discharge Control: Designed for minimal PD levels throughout service life.
Technical data table 1
| Specification | Value |
|---|---|
| Rated Voltage | 12kV |
| Rated Current | 2500A, 3150A, 4000A |
| Power Frequency Withstand Voltage | 48kV/1min |
| Lightning Impulse Withstand Voltage | 85kV |
| Rated Frequency | 50Hz |
| Rated Short-Circuit Breaking Current | 31.5kA, 40kA |
| Rated Short-Circuit Breaking Times | 30Times |
| Rated Peak Withstand Current | 80kA |
| Rated Single Capacitor Bank Breaking Current | 630A |
| Rated Back-to-Back Capacitor Bank Breaking Current | 400A |
| Loop Resistance under Rated Contact Force | ≤25~30μΩ |
| Contact Self-Closing Force | 210±60N |
| Specification | Value |
|---|---|
| Contact Opening Distance | 9±1mm |
| Rated Over-Travel | 3.5±0.5mm |
| Average Opening Speed | 1.1±0.2m/s |
| Average Closing Speed | 0.8±0.2m/s |
| Rated Contact Force | 3500±200N, 4300±200N |
| Contact Closing Bounce Time | ≤2ms |
| Opening Contact Rebound Amplitude | ≤2mm |





