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Home❯Products❯Medium Voltage Distribution❯Overhead Line Apparatus

Magnetically Controlled Type Primary-Secondary Fusion Pole-mounted CB Assembly

The Magnetically Controlled Primary-Secondary Integrated Pole-mounted Circuit Breaker Assembly is an upgraded generation of power system device. It integrates voltage and current sensors along with the vacuum interrupter into the pole through a highly integrated design. Structurally, it adopts a three-phase independent, direct-drive permanent magnet operating mechanism, offering flexible control and short opening time (<10ms). It is suitable for various line operation scenarios and can perform line breaking, control, protection, and line loss data acquisition tasks.

Specifications

Specifications Product Image
Opening current: ≤3A
Mechanical life: ≥10,000 operations
Rated voltage: 12kV
Rated current: 630A
Power frequency withstand voltage (1min) (rms), phase-to-phase and phase-to-ground / open contact: 42 / 48kV Rated short-circuit current breaking operations: ≥30 times
Rated frequency: 50Hz
Rated short-circuit making current (peak): 63kA
Secondary circuit 1min power frequency withstand voltage: 2kV
Opening time: <10ms
Partial discharge of complete unit (at 14.4kV): ≤5pC
Lightning impulse withstand voltage (peak), phase-to-phase and phase-to-ground / open contact: 75 / 85kV
Rated short-circuit breaking current (rms): 25kA
Rated short-time withstand current (4s): 25kA
Rated peak withstand current: 63kA

Features

Minimal energy required for actuation (opening current <3A), improving energy efficiency and reliability.
Fast opening speed, inherent opening time <10ms, significantly faster than spring mechanism.
Magnetic control operating mechanism made from permanent magnet material, offering high hardness, wear resistance, and fast opening capability.

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