The 40.5kV Top Outlet Embedded Pole is a key insulation component designed for high-voltage indoor switchgear systems, supporting current ratings of 2000A and 2500A. Utilizing advanced epoxy resin vacuum encapsulation, it provides excellent dielectric strength and thermal endurance. Its top outlet design makes it especially suitable for overhead cable connections in switchgear, widely used in substations, power plants, and high-voltage transmission networks.
| 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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