The FZW28-12F series outdoor user demarcation high-voltage load switch (Watchdog) (referred to as demarcation switch) is designed for outdoor pole-mounted applications and features both manual and electric operation functions. The switch body utilizes imported Toshiba VSP5-12 technology from Japan, making it a maintenance-free load switch. It employs vacuum arc extinguishing and SF6 gas as insulation media for ground and phase-to-phase insulation.
This product complies with: GB3804 "High-voltage AC Load Switches" and GBT11022 "Common Technical Requirements for High-voltage Switchgear and Control Equipment Standards".
The FZW28-12F demarcation switch (consisting of the FZW28-12 switch body and FDR-01 controller) possesses fault detection, protection control, and communication functions. Installed on 10kV overhead lines, it can automatically clear single-phase ground faults and automatically isolate phase-to-phase short-circuit faults. The installation point is suitable for the responsibility demarcation point of user incoming lines on 10kV distribution lines, and can also be applied at branch line connections that meet the requirements.