Key Technologies in Circuit Breakers.

Key Technologies in Circuit Breakers .

Circuit breakers, as important components of power systems, are highly technical and multiple key technologies.

Here are some introductions to the key technologies in circuit breakers:

1. Rated Parameter Technology Rated parameters are the foundation of circuit breaker design selection, mainly including rated voltage, rated current, and rated short-circuit breaking current. These parameters characterize the key performance of circuit breakers, such as insulation strength long-term current carrying capacity, and breaking capacity.

2. Dynamic and Thermal Stability Technology Dynamic stability current and thermal stability current are important parameters that measure the ability circuit breakers to withstand electromechanical effects and thermal effects in short-circuit conditions. These technologies ensure that circuit breakers can maintain stability in fault conditions and will be damaged by excessive current.

3. Operating Performance Technology Closing time and opening time, operating cycle, etc., are key technical parameters that characterize the operating performance of breakers. These parameters determine the response speed and reliability of circuit breakers in actual operation.

4. Permanent Magnet Mechanism Technology Permanent magnet circuit breakers adopt dual-stable internal setting and are integrated with a mechanical manual trip unit, which reduces movable parts and improves reliability and mechanical life. Permanent magnet mechanism technology makes the operation circuit breakers more lightweight and reliable, especially suitable for frequent operation occasions.

5. Control and Protection Technology The control technology of circuit breakers includes advanced electronic components precise closing and opening time control, which improves the anti-interference ability and operation accuracy of circuit breakers. In addition, the protection functions of circuit breakers such as overload, short circuit, and undervoltage protection, are key to ensuring the safety of circuits and equipment.

6. Setting Technology The setting of circuiters is to ensure that they can correctly avoid the normal current of the line and quickly trip when fault current occurs. This involves the selection of fixed action setting and adjustable setting, as well as the adjustment of action current value and action time value on the trip unit.

The above technologies together ensure the efficient and safe operation of circuit break in power systems.