Description
Description of ZW43-12(F) Series Outdoor High-voltage Intelligent Vacuum Circuit Breaker
The ZW43-12(F) Series Outdoor High-voltage Intelligent Vacuum Circuit Breaker is a cutting-edge outdoor high-voltage switching device, specifically engineered for three-phase AC 50Hz power systems with a rated voltage of 12KV. As a core component integrating protection, control, and intelligent management functions, it is designed to reliably interrupt, close, and carry load currents, overload currents, and short-circuit currents in power distribution networks, ensuring the safe and stable operation of the entire power system.
Distinguished by its intelligent design and robust outdoor adaptability, this circuit breaker is particularly suited for scenarios requiring frequent operations and urban distribution network automation, addressing the core needs of modern power distribution for efficiency, reliability, and intelligence. It strictly complies with international and domestic industry standards, including GB/T1984 《High-voltage AC Circuit Breakers》, GB/T11022 《Common Technical Requirements for High-voltage Switchgear and Control Equipment》, and DI402 《Technical Conditions for Ordering AC High-voltage Circuit Breakers》, guaranteeing consistent quality and wide compatibility with existing power infrastructure.
Unlike traditional outdoor high-voltage circuit breakers, the ZW43-12(F) series integrates advanced intelligent control and permanent magnet operating technologies, optimizing both operational performance and maintenance efficiency. Its modular design and enhanced environmental resistance make it a versatile solution for various outdoor high-voltage distribution scenarios, from industrial zones to urban and rural power grids.
Parameter of ZW43-12(F) Series Outdoor High-voltage Intelligent Vacuum Circuit Breaker
| Model number | name | unit | numeric value | ||
| 1 | rated voltage | kV | 12 | ||
| 2 | rated insulation level | 1-minute power frequency withstand voltage (between poles, to ground/short circuit) | Dry | 42/49 | |
| wet | 34 | ||||
| lightning impulse withstand voltage (between poles, to ground) | 75 | ||||
| lightning impulse withstand voltage (break) | 85 | ||||
| 3 | rated frequency | Hz | 50 | ||
| 4 | rated current | A | 630 | ||
| 5 | rated short-time current and duration | kA/4S | 20 | ||
| 6 | rated short-circuit breaking current | kA | 20 | ||
| 7 | rated short-circuit closing current | 50 | |||
| 8 | rated peak current rating | 50 | |||
| 9 | rated operating sequence | / | O-0.3s-CO-180s-CO | ||
| 10 | rated short-circuit current interruption times | time | 30 | ||
| 11 | mechanical life | 30000 | |||
| 12 | accumulated wear thickness of the contact | mm | 3 | ||
| 13 | net weight | kg | 70 | ||
Feature of ZW43-12(F) Series Outdoor High-voltage Intelligent Vacuum Circuit Breaker
- Patented Solid-sealed Vacuum Interrupter: The vacuum interrupter adopts patented solid-sealed technology, encapsulated in epoxy resin, which not only reduces the overall volume but also enhances service life and operational reliability. The exposed shield design facilitates inspection and maintenance, while the epoxy resin encapsulation ensures excellent weather resistance, making it easy to transport and install.
- High-Reliability Bistable Permanent Magnet Mechanism: Compared with traditional spring mechanisms, it has fewer moving parts, eliminating mechanical wear and fatigue. It requires no regular maintenance, features a fast response speed, and has a mechanical life of up to 30,000 times, ensuring stable operation even under frequent switching conditions.
- Environmentally Friendly Epoxy Resin Encapsulation: The epoxy resin material used meets environmental protection requirements, with proven outdoor performance—resistant to ozone, UV radiation, corrosion, and extreme temperatures. It is sturdy, lightweight, and shatter-proof, adapting to various harsh outdoor environments such as high temperatures, low temperatures, and high humidity.
- Advanced Vacuum Arc-extinguishing and Solid Insulation: Integrates vacuum arc-extinguishing technology and solid insulation design, achieving fast arc extinction without pollution, strong breaking capacity, and high insulation level. The compact and lightweight structure simplifies on-site installation and transportation, reducing construction costs.
- Emergency Manual Opening Device: Equipped with a manual opening device for emergency use when the control system fails. It can reliably interrupt rated load currents, ensuring operational safety and avoiding fault expansion in emergency scenarios.
- Reliable Position Detector: A proximity switch is installed on the linkage shaft, detecting the opening and closing position of the switch without the need for additional mechanical components. This design is simple, reliable, and reduces the risk of mechanical failure, ensuring accurate position feedback for intelligent control systems.
- Corrosion-Resistant Shell: The switch shell is treated with stainless steel or plastic spraying, featuring excellent corrosion resistance and weather resistance. It can withstand long-term exposure to outdoor environments, extending the product’s service life and reducing maintenance costs.
- Isolating Switch with Reliable Interlocking: An optional isolating switch forms a visible break and achieves reliable interlocking, composing a combined electrical device. This design enhances operational safety, prevents misoperation, and facilitates maintenance and inspection.
- Intelligent “Four Remote” Functions: The matching intelligent controller realizes remote control, remote measurement, remote signaling, and remote adjustment functions, enabling real-time monitoring of the circuit breaker’s operating status, remote operation, and fault diagnosis. This promotes the intelligence of power distribution networks and improves management efficiency.
Application of ZW43-12(F) Series Outdoor High-voltage Intelligent Vacuum Circuit Breaker
- Power Substations and Industrial & Mining Distribution Networks: It serves as a key protection and control device in medium-voltage power substations, as well as distribution systems of industrial and mining enterprises. It effectively safeguards transformers, power cables, and switchgear from damage caused by overloads, short circuits, and other electrical faults, minimizing production downtime and ensuring uninterrupted power supply for industrial operations.
- Urban and Rural Power Distribution Grids: Tailored for the dynamic needs of urban and rural power supply, it excels in areas with frequent switching operations—such as residential communities, commercial districts, and rural power supply nodes. Its high mechanical durability and stable performance reduce maintenance workload, improving the reliability of the power supply for end-users.
- Urban Distribution Network Automation: With its built-in intelligent control capabilities, the ZW43-12(F) series seamlessly integrates into urban distribution network automation systems. It supports remote operation and real-time monitoring, enabling efficient management of power distribution, rapid fault handling, and reducing the need for on-site manual intervention, which is crucial for modern smart grid construction.
- Special Scenarios with High Reliability Requirements: It is also applicable to scenarios where operational reliability is paramount, such as critical infrastructure power supply, temporary power distribution for construction projects, and auxiliary distribution systems for new energy projects (e.g., distributed photovoltaic and wind power). Its robust structure and intelligent protection ensure stable performance even in complex operating conditions.
