24kV Top Outlet Embedded Pole

  • Optimized Structural Design:Top outlet layout saves internal cabinet space and simplifies wiring
  • Strong Current Capacity:Rated for 1250A, ideal for mainstream medium-voltage applications
  • Excellent Short-Circuit Protection:Breaking capacity up to 40kA ensures system safety during faults
  • Outstanding Insulation Performance:Withstands 75kV lightning impulse and 48kV power frequency voltage
  • Reliable Mechanical Durability:10,000 operation cycles, suitable for frequent switching environments
  • Superior Conductivity: Loop resistance:≤30μΩ under rated pressure, minimizing energy loss
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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.

Product parameters
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

 

 

Parameters of Matching Vacuum Switch

 

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