This 24kV top outlet embedded pole is designed for medium to high-voltage switchgear, particularly suitable for applications with spatial constraints. Its top outlet structure allows seamless connection with upper busbar systems, ensuring simplified installation and enhanced system stability.
With a rated current of 1250A and short-circuit breaking current up to 40kA, this product delivers excellent current handling capability. It also features a short-time withstand current of 40kA and a peak withstand current of 100kA, providing outstanding protection during fault conditions.
The pole ensures superior insulation performance, including 48kV power frequency withstand voltage, 75kV lightning impulse withstand voltage, and ≤5pC partial discharge, contributing to reliable system insulation. Constructed with high-strength materials and tin/silver-plated conductors, it offers excellent conductivity and corrosion resistance.
Its precisely engineered contact pressure and rebound force ensure consistent and reliable switch operations. With a mechanical lifespan of 10,000 operations and a storage life of 20 years, this embedded pole is a robust solution for high-voltage switchgear systems.
| Rated Voltage | 24kV |
| Rated Current | 1250A |
| Rated Frequency | 50Hz |
| Rated Short-Circuit Breaking Current | 40kA |
| Rated Short-Circuit Breaking Current Breaking Operations | 30 times |
| Rated Short-Circuit Making Current | 100kA |
| Rated Peak Withstand Current | 100kA |
| Rated Short-Time Withstand Current (4s) | 40kA |
| Rated Single Capacitor Bank Breaking Current | 630A |
| Rated Back-to-Back Capacitor Bank Breaking Current | 400A |
| Short-Time (1min) Power Frequency Withstand Voltage | 48kV |
| Lightning Impulse Withstand Voltage (Peak) | 75kV |
| Circuit Resistance under Rated Contact Pressure | ≤25~30Ω |
| Mechanical Life | 10,000 times |
| Contact Self-closing Force | 120±60N |
| Contact Reaction Force at Rated Opening Distance | 200±50N |
| Permissible Contact Wear Thickness | 3mm |
| Storage Period | 20 years |
| Partial Discharge | ≤5pC |
| Rated Operating Sequence | O-0.3s-CO-180s-CO |
| Contact opening distance | 9±1mm |
| Rated overtravel | 3.5±0.5mm |
| Average opening speed | 1.1±0.2m/s |
| Average closing speed | 0.8±0.2m/s |
| Rated contact pressure | 2500±200N、3200±200N |
| Contact closing bounce time | ≤2ms |
| Contact opening and closing phase difference | ≤1ms |
| Opening contact rebound amplitude | ≤2mm |
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