Applicable Scope
ZW32-12F Outdoor High-Voltage Vacuum Inter-section Circuit Breaker (Watchdog Switch) is an outdoor distribution equipment rated at 12KV for three-phase AC 50HZ. This circuit breaker is mainly used for opening and closing load currents, overcurrents, and short circuits, as well as for grounding protection, selectable recurrence of re-closing, local remote control, and remote communication functions. It is suitable for use in protection and control in substation and industrial and mining enterprise distribution systems. When a 12KV line T-type connection user experiences a fault internally, or even if it occurs within the user's input switch, but the protection action time is not timely, it will cause the protection of the substation output switch to trip. If the fault is permanent, and the substation re-closing is unsuccessful, a fault within a medium-voltage user boundary will cause the entire distribution main line to lose power. Such common spread accidents in the grid will cause significant losses to society. The ZW32-12F Outdoor High-Voltage Vacuum Inter-section Circuit Breaker (Watchdog Switch) (hereinafter referred to as the circuit breaker) is installed at the responsibility boundary of the overhead line, that is, at the front end of the user's input line, which will automatically cut off single-phase ground faults and interphase short circuits within the user, avoiding the spread of faults within the user's boundary to the transmission main line, ensuring the safety of power supply for non-faulty users and improving the reliability of power supply.
Use Environment Conditions:
1. Surrounding air temperature: -40℃ to +40℃;
2. Altitude: no more than 2000m;
3. Wind speed does not exceed 34 m/s (equivalent to 700 Pa on the cylinder surface);
4. Pollution Level: V-class;
5. No frequent or severe vibrations, with an earthquake intensity not exceeding 8 degrees.
6. Areas without fire, explosion, or chemical corrosion.
The main functions of the controller:
1. Three-stage overcurrent protection
2. Re-closing Control
3. Post-acceleration function
Zero Sequence Protection
5. Auxiliary functions (power-on closing, power-off opening)
6. Remote Communication
7. Remote Control Nearby
