1000A/1250A Outdoor AC Vacuum Circuit Breaker Used With Overhead Disconnect Switch With Mechanical Endurance 10000 Times

1000A/1250A Outdoor AC Vacuum Circuit Breaker Used With Overhead Disconnect Switch With Mechanical Endurance 10000 Times

Product Description:

The ZW8-12 outdoor vacuum circuit breaker is a specific type of circuit breaker designed for outdoor use in high-voltage switchgear systems. It is specifically suitable for three-phase AC outdoor high-voltage switchgear with a rated voltage of 12kV and a rated frequency of 50Hz.

The primary function of the ZW8-12 circuit breaker is to control and protect the distribution systems in 10kV urban and rural power grids. It is responsible for switching on or off load currents and also for interrupting short-circuit fault currents that may occur in the power system.

As a vacuum circuit breaker, it utilizes a vacuum interrupter to extinguish the arc that forms when the circuit breaker opens during switching operations. Vacuum interrupters provide reliable arc interruption capabilities and are known for their high dielectric strength and excellent electrical performance.

The ZW8-12 circuit breaker is considered to be one of the most widely used, mature, and stable products in the power system. This implies that it has a long history of successful operation, extensive field deployment, and proven reliability. It has undergone rigorous testing and meets the necessary industry standards for performance and safety.

GW9-10 outdoor overhead disconnect switches are typically used in high voltage transmission and distribution systems to isolate sections of the network for maintenance or repair work. They are also used as a safety device to protect workers from electrical hazards, such as accidental contact with live parts of the system.

They are designed to handle high voltages and currents, and they are often installed in outdoor locations, where they are exposed to harsh environmental conditions, such as extreme temperatures, wind, rain, and dust. Therefore, they are built to withstand these conditions and are often made of durable materials such as steel or aluminum.

Outdoor overhead disconnect switches come in different types and configurations, depending on the specific application and requirements. For example, some VEIs are designed for indoor use, while others are suitable for outdoor use. Some are designed to operate manually, while others are automated and can be operated remotely.

In addition to their primary function of isolating circuits, outdoor overhead disconnect switches also have other important features, such as providing a visual indication of their status (open or closed), and ensuring that the circuit is not energized when the isolator is open.

Double effect of using when GW9-10 series isolator swich can be used with the vacuum circuit breakers!!

Application:

1.Power distribution: Outdoor vacuum circuit breakers are widely used in power distribution systems to switch and protect distribution transformers, feeders, and other equipment. They are commonly installed on outdoor poles, substations, and switchgear.

2.Utility-scale renewable energy: Outdoor vacuum circuit breakers are used in utility-scale renewable energy projects, such as wind and solar farms, to switch and protect inverters and other equipment.

3.Railway systems: Outdoor vacuum circuit breakers are used in railway systems, such as signaling systems and railway infrastructure, to switch and protect electrical equipment.

4.Mining operations: Outdoor vacuum circuit breakers are used in mining operations to switch and protect electrical equipment in harsh outdoor environments.

5.Oil and gas industry: Outdoor vacuum circuit breakers are used in the oil and gas industry to switch and protect electrical equipment, such as pumps, compressors, and pipelines.

Structure:

1.Vacuum Interrupter: The vacuum interrupter is the heart of the circuit breaker. It consists of a fixed contact and a movable contact sealed within a vacuum chamber. When the circuit breaker operates, the contacts separate, creating an arc. The vacuum interrupter's role is to extinguish the arc and provide reliable interruption of the current.

2.Operating Mechanism: The circuit breaker is equipped with an operating mechanism responsible for opening and closing the contacts. It may utilize various mechanisms such as a spring mechanism, hydraulic mechanism, or electromagnetic operating mechanism. The operating mechanism ensures smooth and reliable operation of the circuit breaker.

3.Insulating Enclosure: The circuit breaker is housed in an insulating enclosure, which provides protection against external factors like moisture, dust, and contaminants. The enclosure is typically made of high-quality insulating materials to maintain the required dielectric strength and insulation properties.

4.Control and Protection System: The ZW8-12 circuit breaker incorporates a control and protection system for monitoring and controlling its operation. This system includes various sensors, relays, and control devices to detect abnormal conditions, provide signal inputs, and initiate the opening or closing of the circuit breaker.

5.Connection Terminals: The circuit breaker has connection terminals for the incoming and outgoing electrical connections. These terminals allow for the connection of power cables or busbars, enabling the flow of current through the circuit breaker.

6.Auxiliary and Control Components: Additional auxiliary and control components may be present in the circuit breaker to enhance its functionality. These can include auxiliary switches, voltage transformers, current transformers, and other accessories necessary for monitoring, measuring, and controlling the electrical parameters.

Advantage:

1.CT23 Spring Energy-stored Operating Mechanism: The ZW8-12 circuit breaker is equipped with the CT23 type spring energy-stored operating mechanism. This mechanism utilizes stored mechanical energy in springs to facilitate the opening and closing of the circuit breaker contacts. It offers flexibility in operation, allowing for motorized or manual operation depending on the specific requirements of the application.

2.ZW8-12G Combined Breaker: The ZW8-12G model is a combined breaker that consists of the ZW8-12 circuit breaker and an isolator. This configuration enables it to function as a sectionalizer, providing the capability to isolate specific sections of a power distribution network for maintenance or fault identification purposes.

3.Three-Phase Assembled in a Tank Structure: The ZW8-12 circuit breaker features a three-phase assembled in a tank structure. This means that the breaker's components for each phase are enclosed within a common tank, providing a compact and space-saving design. The tank provides mechanical protection and enhances the overall robustness of the circuit breaker.

4.Vacuum Arc-Extinguishing Chamber and Insulation Material: Within the metal tank, the ZW8-12 circuit breaker incorporates a three-phase vacuum arc-extinguishing chamber. This chamber efficiently extinguishes electrical arcs that occur during circuit interruption. Additionally, the circuit breaker utilizes insulation materials, such as SMC (Sheet Molding Compound), to ensure insulation between phases and from phase to phase, enhancing its overall insulating strength.

5.Reliable Performance and High Insulating Strength: The ZW8-12 circuit breaker is known for its reliable performance and high insulating strength. It is designed and tested to meet stringent performance standards, ensuring dependable operation in various electrical conditions. The high insulating strength enhances the circuit breaker's ability to withstand and isolate electrical voltages, contributing to the safety and reliability of the electrical system.

Condition:

Ambient temperature:-15°C~+40°C
Wind pressure:≤700Pa(equivalent to wind speed 34m/s)
Altitude:≤1000m
Seismic intensity:≤8
*The air filthy should be win in Ⅲ degree. Frequently violent vibration should be forbidden.

 Technical Parameter:

ZW8-12

 
 GW9-10