How to manufacture fixed vacuum circuit breakers

Principles and Manufacturing Processes of Vacuum Circuit Breakers

A vacuum circuit breaker is a switch device used to open and close power circuits. Its main working principle is to use electromagnetic mechanisms to cut off or energize circuits in a vacuum environment. Vacuum circuit breakers not only have stable electrical performance, but also possess excellent waterproof, dustproof and anti-corrosion properties, and thus are widely used in power systems. The manufacturing process of vacuum circuit breakers mainly includes the following aspects:

1. Material preparation: The main materials of vacuum circuit breakers include insulating materials, flame-retardant materials, conductive materials, etc. These materials must undergo strict screening and testing to ensure their quality meets the requirements.

2. Enclosure manufacturing: The enclosures of vacuum circuit breakers are typically made of materials such as aluminum alloy and steel plates, and need to go through processing techniques like cutting, stamping, and welding before they can be made into finished products.

3. Insulator Manufacturing: Insulators are one of the key components of vacuum circuit breakers. The insulators of vacuum circuit breakers are usually made of materials such as glass fiber reinforced plastics and ceramics, and need to go through processes such as injection molding and pressing.

4. Metal component manufacturing: The metal components of vacuum circuit breakers include contacts, isolation plates, drive mechanisms, etc. These components also need to be manufactured through processes such as CNC machining, welding, and benchwork.

5. Assembly and Testing: The assembly and testing process of vacuum circuit breakers is one of the most crucial steps. In this stage, it is necessary to assemble each component, conduct debugging and testing as required, to ensure the stable performance of the vacuum circuit breaker and its compliance with product standards.

Assembly and Testing of Vacuum Circuit Breakers

During the assembly and testing of vacuum circuit breakers, it is necessary to gradually complete each process flow in accordance with the design requirements to ensure the stability of product performance. The specific process is as follows:

Insulator installation: Fix the insulator in the corresponding position to ensure its accurate and stable position.

2. Installation of metal components: Install each metal component to the corresponding position to ensure reliable contact.

3. Installation of electromagnetic mechanism: Install the electromagnetic mechanism components in the corresponding positions and connect the motor cable for subsequent debugging and testing.

4. Debugging and Testing: After the initial assembly is completed, it is necessary to debug and test each switchgear to determine its normal working condition and whether all performance indicators meet the requirements.

5. Panel Installation: After all components have been debugged and tested as qualified, the panel installation of the switchgear is required to ultimately form a complete vacuum circuit breaker product.

Answers to Common Questions in the Production of Vacuum Circuit Breakers

The problem of the vacuum degree not being maintained: It may be caused by the aging, cracking or leakage of the rubber sealing ring. The sealing ring needs to be replaced in time.

2. The issue of high contact resistance: It may be caused by insufficient contact surface area, poor contact, etc. It is recommended to adopt appropriate processing techniques to improve the surface smoothness of the contacts to ensure good contact performance.

3. The problem of live parts failing to trip: It may be caused by reasons such as electromagnetic mechanism, poor contact of contacts, oxidation of contacts, etc. It is necessary to inspect and repair the components.

4. The problem of the automatic reset switch failing to reset normally: It may be caused by reasons such as aging or damage of mechanical components, and maintenance and replacement are required.

In conclusion, the production process of vacuum circuit breakers involves multiple links and requires the adoption of scientific and reasonable manufacturing techniques to ensure product performance and reliability. Meanwhile, in the production of vacuum circuit breakers, we also need to pay attention to and solve some common problems to improve the quality and market competitiveness of the products.