The 40.5kV Center Distance 400mm Conventional Embedded Pole is manufactured using advanced epoxy APG technology, embedding the vacuum interrupter and conductive elements into a compact and highly insulating structure. With current ratings from 1250A to 2500A, it is ideally suited for mid- and high-voltage vacuum circuit breakers and switchgear, supporting both fixed and withdrawable configurations. Widely used in utility grids, rail transit systems, and industrial power distribution networks.
| Rated Voltage | 40.5kV |
| Rated Current | 1250A, 1600A, 2000A, 2500A |
| Rated Frequency | 50Hz |
| Rated Short-Circuit Breaking Current | 25kA, 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) | 25kA, 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 | 3100±200N、3600±300N |
| Contact closing bounce time | ≤3ms |
| Contact opening and closing phase difference | ≤1ms |
| Opening contact rebound amplitude | ≤2mm |
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