High Voltage Vacuum Circuit Breaker with Isolation Knife

The ZW43-12 outdoor high voltage vacuum circuit breaker is designed for three-phase AC 50Hz power systems with a rated voltage of 12kV. It is primarily used for interrupting and closing load currents, overload currents, and short-circuit currents in power distribution systems. It is widely applied in substations and industrial and mining enterprises for protection and control purposes. This circuit breaker features a compact and dry design with reliable insulation, a long electrical lifespan, and maintenance-free operation. It is particularly suitable for frequent operation environments. Additionally, it can serve as a sectional switch in electrical networks and, with the addition of a controller, enable automation in distribution systems.

This product complies with standards such as GB/T1984 "High-voltage AC circuit breakers," GB/T1985 "AC high-isolation switches and grounding switches," and GB/T11022 "Common technical requirements for high-voltage switchgear and controlgear standards."

Environmental Conditions:Ambient Air Temperature: -40°C to +40°CAltitude: Not exceeding 2000mWind Pressure: Not exceeding 700Pa (equivalent to a wind speed of 34m/s)Seismic Intensity: Not exceeding 8 degreesPollution Level: Level IVDaily Temperature Difference: Not exceeding 25°CRelative Humidity: Daily average not exceeding 95%, monthly average not exceeding 90%No inflammable, explosive, corrosive, or highly vibrating environmentsKey Structural Features:Compact Design: The circuit breaker undergoes a new miniaturized design and features a fully enclosed structure. Its unique arc extinction chamber encapsulation technology ensures excellent sealing performance, enhancing moisture and condensation resistance. It is suitable for use in high-temperature and humid areas.Reliable Breaking Performance: The circuit breaker offers stable and reliable breaking performance. It is non-combustible, safe, maintenance-free, compact in size, lightweight, and has a long service life.Phase Current Transformers (CT): The circuit breaker can be equipped with phase CTs to output phase currents for function control and information analysis, enabling overcurrent protection.Surge Elimination Device (Composite Controller): The circuit breaker is equipped with a surge elimination device that not only prevents misoperation caused by surge arching but also ensures that the disconnecting coil remains de-energized during normal operation, thereby preventing misoperation due to disconnecting coil oscillation.Intelligent Switch Controller: The circuit breaker can also be equipped with an intelligent switch controller that offers various protection functions such as three-stage current protection, zero sequence protection, reclosing, and rapid tripping. It supports multiple communication protocols and allows for the formation of communication networks using various communication methods. It can be locally and remotely operated, either through manual control or via the communication network. When used with appropriate tie breakers or sectionalizer control devices, it can serve as a tie breaker or sectionalizer.Sealed Operating Mechanism: The operating mechanism is sealed within the switchgear enclosure, effectively preventing corrosion caused by prolonged exposure to outdoor environments.Innovative and Reliable Operating Mechanism: The operating mechanism is innovative, simple, reliable, compact in size, and has a long mechanical lifespan.Vacuum Arc Extinction and Solid Insulation: The circuit breaker employs vacuum arc extinction and solid insulation, which offer a small size, lightweight, high breaking capacity, and high insulation level.Manual Disconnection Device: In case of control system failure, the circuit breaker is equipped with a manual disconnection device for emergency disconnection operations. It reliably breaks the rated load current.Position Sensor: The proximity switch is installed on the linkage shaft, eliminating the need for mechanical components. It detects the opening and closing positions of the circuit breaker reliably.Stainless Steel or Powder-Coated Housing: The switchgear enclosure is constructed from stainless steel or treated with a powder-coating to ensure excellent corrosion resistance and weather resistance.Isolating Switch and Visible Break: The circuit breaker acts as an isolating switch, forming a visible break and reliable interlocking, making it a combination appliance.Controller with Remote Control, Telemetry, Telecommunication, and Remote Adjustment (Four Remote) Functions: The controller enables remote control, telemetry, telecommunication, and remote adjustment functions.Conclusion: The ZW43-12 High Voltage Vacuum Circuit Breaker with Isolation Knife is an advanced outdoor switchgear device designed for efficient and reliable operation in high voltage power systems. With its compact design, reliable breaking performance, long electrical lifespan, and compliance with industry standards, it provides an ideal solution for power distribution and protection requirements. The circuit breaker's automation capabilities, sealed operating mechanism, and intelligent switch controller make it suitable for various applications. It offers a cost-effective and efficient solution for modern power systems.