How to install and debug vacuum circuit breakers to ensure their normal operation

Installing and debugging vacuum circuit breakers to ensure their normal operation requires following a series of detailed steps and precautions. Here is an inductive guide:

1、 Preparation before installation

1. Check whether the vacuum circuit breaker and its accessories are intact, and whether the product nameplate, certificate of conformity, etc. are complete.

2. Clean the surface dust and dirt of the circuit breaker to ensure equipment cleanliness.

3. Use the power frequency withstand voltage method to check the vacuum degree of the vacuum extinguishing chamber to ensure that it meets the requirements.

2、 Installation steps

1. Check the contact distance, buffer and other parameters of the circuit breaker according to the installation and use instructions and technical data.

2. Manually operate energy storage, closing, and opening, and observe whether the energy storage status and opening/closing position indicators are normal.

3. Use the operating power supply for energy storage, closing, and opening operations, and observe whether the relevant indicators are normal.

4. Check whether the "five prevention locking" device is complete and reliable.

5. Assemble strictly according to the installation sequence to ensure that the specifications of the fasteners used for installing each component comply with the design specifications.

6. Adjust the distance between each pole to ensure compliance with professional technical regulations.

When tightening screws near the arc extinguishing chamber, do not use a flexible wrench to avoid damaging the equipment.

3、 Debugging process

1. Adjust the contact distance and contact stroke to ensure that they meet the technical specifications required by the product.

2. Conduct electric closing and opening tests, and use a microcomputer to test mechanical characteristic parameters such as opening rebound amplitude.

3. Measure and adjust various mechanical characteristic parameters, such as closing speed, opening speed, three-phase synchronicity, etc., to ensure that they reach their optimal values.

4. Conduct circuit resistance and power frequency withstand voltage tests to ensure that the equipment meets safety requirements.

4、 Precautions

During the installation and debugging process, safety operating procedures should be followed to ensure the safety of personnel and equipment.

2. Avoid using vacuum circuit breakers in harsh environments such as humidity, corrosive gases, or conductive dust.

3. Regularly inspect and maintain vacuum circuit breakers to ensure their long-term stable operation.

4. Any problems discovered during the debugging process should be promptly recorded and addressed to ensure the normal operation of the equipment.

By following the above installation and debugging steps and precautions, it is possible to ensure the normal operation and proper performance of the vacuum circuit breaker.