12kV Center Distance 310mm High Current Pole (Old Design)

  • High Current Capacity:Rated current up to 4000A, suitable for high-current applications.
  • Strong Short-Circuit Withstand Capability:Short-circuit breaking current up to 40kA for enhanced system safety.
  • High Voltage Withstand Performance:Power frequency withstand voltage of 48kV and lightning impulse withstand voltage of 85kV for harsh environments.
  • Long Service Life:Mechanical lifespan of up to 10,000 operations for reliable long-term use.
  • Excellent Conductivity & Corrosion Resistance:Made from copper or aluminum alloy with tin or silver plating for superior corrosion resistance.
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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.

Product parameters
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
Size/Installation

 

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
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Suitable for substations, industrial power grids, new energy projects and other demanding scenarios
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