Product introduction
The Aierway 12kV Center Distance 310mm is a premium-grade, heavy-duty switchgear engineered for the most demanding medium-voltage applications. Designed with an extended 310mm phase-to-phase center distance, it provides maximum dielectric clearance, superior thermal performance, and enhanced operational safety—making it the ideal choice for critical infrastructure, high-reliability industrial systems, and utility substations where performance cannot be compromised.
Design Features
1. Enhanced Dielectric Performance
– 310mm Center Distance: Offers the highest standard phase-to-phase insulation margin in the 12kV class.
– Optimized Creepage & Clearance: Exceeds IEC 62271-200 requirements, suitable for polluted, coastal, and high-altitude installations.
2. Superior Thermal Management
– Optimal Heat Dissipation
– High-Current Capability: Supports ratings up to **4000A** with minimal temperature rise.
3. Robust & Reliable Construction
– Heavy-Duty Busbars: High-conductivity copper with silver or tin plating, sized for optimal current distribution.
– Reinforced Insulation: Enhanced insulation systems for extreme environmental conditions.
– Seismic-Resistant Design: Engineered to withstand seismic activity up to **0.5g horizontal acceleration**.
4. Advanced Safety Features
– Full Internal Arc Containment: Certified to IEC 62271-200 for internal arc fault withstand (IAC AFLR class).
Technical data table 1
| Specification | Value |
|---|---|
| Rated Voltage | 12kV |
| Rated Current | 2500A |
| 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 | 110±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 |
Outline and dimensions of installation





