ZW8-12F outdoor high-voltage intelligent demarcation circuit breaker (commonly known as watchdog), mainly used to break off the rural power network, city network and small power system load current, overload current, short circuit current. The overall structure of the product for the three-phase pole, three-phase vacuum interrupter placed in the solid-sealed column, the use of insulating material insulation and insulation to the ground, reliable performance, high dielectric strength. Recloser type intelligent circuit breaker. Basic type and coincidence controller for easy access to power occasions, PT type and coincidence controller with no power for the occasion, intelligent circuit breakers for radiation-type power supply and ring network power supply system to help the system to eliminate instantaneous failure, automatic Restore power supply, but also isolated permanent failure, to achieve distribution network automation.
The intelligent circuit breaker has 1 to 3 reclosing functions and the recloser parameters can be set The intelligent circuit breaker has the function of closing the inrush current control, overcurrent protection and short-circuit quick-break three-section composite protection, and the parameter can be set continuously; Intelligent circuit breaker with a small current grounding protection, and the parameters can be continuously set; Intelligent circuit breaker can achieve both remote control of the cable, but also under the rod wireless remote control. For the exchange of 50Hz, voltage 10 ~ 12kV three-phase power system, as a break, close the load current, it has overload and short circuit protection, quick protection, fixed time delay protection, automatic reclosing function, also According to the needs of users equipped with arrester or disconnector (ie, circuit breaker and disconnector combination, hereinafter referred to as "combination of intelligent circuit breaker"), etc. The intelligent circuit breaker power supply, remote control operation, with CT, PT Interface, to meet the telemetry requirements. Circuit breaker with arc extinguishing device, so the circuit breaker can carry the load operation, not only can operate the load current, but also operate the fault (short circuit) current; circuit breaker has a good package, so simply observe the circuit breaker , Can not intuitively determine that it is in the closed or disconnected position.
The isolation switch does not have an arc extinguishing device. Although the procedure stipulates that it can operate at a load current of less than 5A, it is generally not loadable. However, the disconnector has a simple structure, and it can be seen from the appearance of its operation. Door dog