The ZN23-40.5 indoor vacuum circuit breaker is a medium-voltage (MV) distribution device that plays a critical role in ensuring the safe and efficient control and protection of electrical systems. With its rated voltage of 40.5 kV and its capability to handle three-phase AC 50Hz, this vacuum circuit breaker is designed for indoor environments. It can be integrated with switchgear cabinets such as the JYN35/GBC-35 and is highly suitable for power plants, substations, and power distribution systems.
One of the standout features of the ZN23-40.5 is its adaptability to locations where frequent switching operations are necessary, ensuring that it meets the demand for control and protection in environments requiring high reliability and low maintenance. This article will cover the technical specifications, structure, operational benefits, and safety features of the ZN23-40.5 indoor vacuum circuit breaker, as well as its use in specific industries.
Technical Specifications of the ZN23-40.5 Indoor Vacuum Circuit Breaker
The ZN23-40.5 vacuum circuit breaker is engineered to handle medium-voltage applications and is packed with features that allow it to operate in demanding environments. The following are the key technical specifications of the device:
- Rated Voltage: 40.5 kV
- Frequency: 50 Hz
- Rated Current: Typically ranges between 630A and 2500A, depending on the configuration.
- Breaking Capacity: This model can handle short circuit conditions up to 31.5 kA, ensuring it can manage electrical faults and overloads effectively.
- Insulation Medium: Vacuum
- Application Environment: Indoor
- Pole Phases: Three-phase AC
- Type of Operation: Handcart type, which means it can be easily moved in and out of the switchgear cabinet.
- Mechanical Endurance: Up to 10,000 operations, making it suitable for environments where frequent switching is required.
- Arc Extinguishing: Uses vacuum technology to extinguish electrical arcs, ensuring a longer lifespan and reducing maintenance needs.
This combination of specifications makes the ZN23-40.5 one of the most reliable and efficient options for medium-voltage indoor installations. The vacuum insulation ensures minimal arc damage, while the handcart design allows for easy mobility and maintenance.
Structural Design and Components
The ZN23-40.5 vacuum circuit breaker is built with a well-thought-out structural design, ensuring safety, durability, and ease of maintenance. It is typically installed inside medium-voltage switchgear systems and designed for easy integration with existing setups.
1. Handcart Structure
The handcart-type design enables the breaker to be mounted on wheels, allowing it to be moved in and out of the switchgear cabinet with ease. This feature is particularly beneficial during maintenance and inspection, as the circuit breaker can be pulled out without disrupting the entire system. Additionally, this design allows quick replacement and reduces system downtime.
2. Vacuum Interruption Chamber
At the core of the ZN23-40.5 is the vacuum interrupter, where the actual breaking of the circuit occurs. Vacuum circuit breakers are known for their efficient arc extinguishing capabilities, as the vacuum medium ensures that no ionized gas remains to sustain the arc. This feature is essential in preventing damage to the breaker and maintaining system stability during faults.
3. Operating Mechanism
The breaker’s operating mechanism is manual, allowing operators to switch it between open and closed positions with ease. This mechanism also features a spring-charging system for energy storage, enabling quick switching during fault conditions. The mechanism is housed in a robust enclosure that protects it from environmental factors and ensures longevity.
4. Current-Carrying Components
The circuit breaker is fitted with high-quality, corrosion-resistant conductors to ensure consistent electrical conductivity and reliability. These components are designed to handle large currents, with ratings typically ranging from 630A to 2500A, making the breaker suitable for a variety of industrial applications.
5. Arc Chute
The arc chute is another vital part of the vacuum circuit breaker. When the breaker interrupts a fault current, an electrical arc forms. The arc chute is responsible for extinguishing this arc in a controlled manner, ensuring the safety and integrity of the electrical system. In vacuum circuit breakers like the ZN23-40.5, the vacuum environment itself helps in arc extinguishing, but the arc chute further assists in the safe dissipation of energy.
Applications of the ZN23-40.5 Indoor Vacuum Circuit Breaker
The ZN23-40.5 vacuum circuit breaker is ideal for various applications, especially in environments where frequent switching operations and high levels of reliability are required. Some of the most common areas of application include:
1. Power Plants
In power generation facilities, the ZN23-40.5 plays a crucial role in managing and protecting electrical equipment. Its ability to handle high voltages and frequent operations makes it an essential component for ensuring the safe distribution of electricity within the plant. The vacuum circuit breaker helps prevent equipment failure and outages by interrupting fault currents quickly and efficiently.
2. Substations
Substations rely on circuit breakers like the ZN23-40.5 to manage the flow of electricity between power plants and distribution networks. These devices are essential in controlling and protecting the electrical system, especially during fault conditions. The vacuum technology used in the ZN23-40.5 ensures minimal wear and tear, reducing the need for regular maintenance.
3. Medium-Voltage Distribution Systems
The ZN23-40.5 is widely used in medium-voltage power distribution systems, such as those found in industrial complexes, commercial buildings, and large-scale infrastructure projects. Its robust design and high breaking capacity make it suitable for managing complex electrical systems and protecting against overloads, short circuits, and other electrical faults.
4. Frequent Switching Applications
The ZN23-40.5 is especially well-suited to environments where frequent switching is required, such as in industrial machinery and automation systems. Its mechanical endurance of up to 10,000 operations means that it can handle frequent opening and closing without significant wear. This feature is essential in industries where systems are continually turned on and off, or where circuits must be frequently disconnected for safety reasons.
Advantages of the ZN23-40.5 Vacuum Circuit Breaker
The ZN23-40.5 offers several advantages that make it a preferred choice for medium-voltage indoor applications:
1. High Reliability
Vacuum circuit breakers like the ZN23-40.5 are known for their high reliability, thanks to the vacuum interrupter’s ability to extinguish arcs without the need for additional gases or chemicals. This design reduces the likelihood of failure and ensures that the breaker can operate effectively even after many operations.
2. Low Maintenance
With minimal moving parts and a vacuum chamber that requires little maintenance, the ZN23-40.5 offers a low total cost of ownership. Unlike gas-insulated breakers, which may require regular refills or checks, vacuum circuit breakers like the ZN23-40.5 are designed for long-term, low-maintenance use.
3. Environmental Friendliness
The absence of harmful gases, such as SF6 (sulfur hexafluoride), makes vacuum circuit breakers a more environmentally friendly option. The ZN23-40.5 operates using a clean vacuum, making it a greener choice for medium-voltage applications.
4. Enhanced Safety
Vacuum circuit breakers are inherently safer than other types of circuit breakers due to their arc-extinguishing capabilities. The ZN23-40.5 can interrupt fault currents without producing a dangerous arc, reducing the risk of fire or equipment damage.
Conclusion
The ZN23-40.5 indoor vacuum circuit breaker is a highly efficient, reliable, and safe solution for medium-voltage applications. With its handcart design, robust vacuum interrupter, and high breaking capacity, it is ideally suited for use in power plants, substations, and industrial settings where frequent operation and protection are essential. Its low maintenance requirements and environmentally friendly design further make it a standout option in the field of medium-voltage electrical protection.
Media Contact
Company Name: CNC ELECTRIC GROUP CO.,LTD.
Email: Send Email
Phone: 86-577-61989999
Address:CNC High-Tech Hutou Industrial Zone, Liushi Town
City: Yueqing
State: Wenzhou
Country: China
Website: https://www.cncele.com/
