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FZW28-12 Column Vacuum Load Switch

The FZW28-12 outdoor column-loading type vacuum load switch (also referred to as a demarcation switch or watchdog) is used for installation on a column. It is a combination of a load switch and an FDR fault detection controller. The switch uses vacuum arc extinguishing, SF6 gas as ground and phase insulation medium.
The switch is equipped with fault detection, protection control and communication functions. It is installed on the 10kV line and can automatically cut off single-phase ground faults and automatically isolate phase-to-phase short-circuit faults.
Implementation of GB3804 national standards.
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