This 12kV high current embedded pole (old design) is specifically designed for high-current applications in 12kV switchgear and power systems. With multiple rated current options (2500A, 3150A, 4000A), it can handle short-circuit breaking currents of up to 31.5kA and 40kA, ensuring stable system performance under extreme conditions. The short-time withstand current can reach up to 40kA, meeting higher electrical load requirements.
The product offers outstanding voltage withstand capabilities, with a power frequency withstand voltage of 48kV and lightning impulse withstand voltage of 85kV, ensuring stable operation in harsh environments. Made from copper or aluminum alloy with tin or silver plating, it provides excellent conductivity and corrosion resistance, extending the service life of the equipment. The design ensures a mechanical lifespan of up to 10,000 operations, providing reliable performance for long-term high-frequency use.
When paired with a vacuum switch, the product ensures precise control of contact distance and operation speed, facilitating efficient electrical connections and operations that meet the stringent technical standards of power systems.
Rated voltage | 12KV |
Rated current | 2500A、3150A、4000A |
Rated frequency | 50Hz |
Rated short-circuit breaking current | 31.5KA、40KA |
Rated short-circuit breaking current breaking times | 30 times |
Rated short-circuit closing current | 80KA |
Rated peak withstand current | 80KA |
Rated short-time withstand current (4 seconds) | 31.5KA、40KA |
Rated single-cell 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) | 85KV |
Loop resistance under rated contact pressure | ≤25~30Ω |
Mechanical life | 10000 times |
Contact self-closing force | 210±60N |
Contact reaction force under rated opening distance | 300±50N |
Contact allowable wear thickness | 3mm |
Storage period | 20 Years |
Partial discharge | ≤5pC |
Rated operation 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 | 3500±200N、4300±200N |
Contact closing bounce time | ≤2ms |
Contact opening and closing phases | ≤1ms |
Opening contact rebound amplitude | ≤2mm |