The 40.5kV Center Distance 328mm Embedded Pole is a critical insulation component for medium-to-high voltage switchgear. It adopts epoxy vacuum embedded technology, integrating the vacuum interrupter and conductors into a compact molded unit. The 328mm center distance suits various cabinet structures. With current ratings up to 2500A, it is widely used in urban power grids, substations, and industrial distribution systems requiring high reliability.
| Rated Voltage | 40.5kV |
| Rated Current | 2000A, 2500A |
| Rated Frequency | 50Hz |
| Rated Short-Circuit Breaking Current | 31.5kA |
| Rated Short-Circuit Breaking Current Breaking Operations | 30 times |
| Rated Short-Circuit Making Current | 80kA |
| Rated Peak Withstand Current | 80kA |
| Rated Short-Time Withstand Current (4s) | 31.5kA |
| Rated Single Capacitor Bank Breaking Current | 630A |
| Rated Back-to-Back Capacitor Bank Breaking Current | 400A |
| Short-Time (1min) Power Frequency Withstand Voltage | 95kV |
| Lightning Impulse Withstand Voltage (Peak) | 185kV |
| Circuit Resistance under Rated Contact Pressure | ≤25~30Ω |
| Mechanical Life | 10,000 times |
| Contact Self-closing Force | 200±60N |
| Contact Reaction Force at Rated Opening Distance | 300±60N |
| Permissible Contact Wear Thickness | 3mm |
| Storage Period | 20 years |
| Partial Discharge | ≤5pC |
| Rated Operating Sequence | O-0.3s-CO-180s-CO |
| Contact opening distance | 20±1mm |
| Rated overtravel | 5±1mm |
| Average opening speed | 1.7±0.2m/s |
| Average closing speed | 0.75±0.2m/s |
| Rated contact pressure | 3600±200N |
| Contact closing bounce time | ≤3ms |
| Contact opening and closing phase difference | ≤1ms |
| Opening contact rebound amplitude | ≤2mm |
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