Breaking performance of vacuum circuit breakers: how to cope with different loads

Vacuum circuit breakers may have the following problems when breaking different loads

Unstable opening current:

When opening different loads, the size of the opening current of the vacuum circuit breaker may be different, especially when opening small-current loads, its opening current may be much smaller than the rated current, which may lead to the circuit breaker not being able to open normally.

The opening time is too long:

When opening large-current loads, the opening time of the vacuum circuit breaker may be longer, which may lead to untimely protection of the load circuit, thus affecting the reliability and safety of the system.

Arcing during opening:

When opening and breaking high-current loads, vacuum circuit breakers may arc, which generates high temperatures and high pressures and other harmful gases, not only damaging the vacuum circuit breakers, but also causing damage to the surrounding environment and equipment.

Damage to the vacuum circuit breaker:

If the vacuum circuit breaker is not reasonably designed or improperly used, the opening of different loads may lead to damage to the vacuum circuit breaker, which will affect the normal operation of the equipment, and may even cause damage to the equipment and personnel.

Therefore, vacuum circuit breakers need to pay attention to the selection of appropriate circuit breaker models and parameters when breaking different loads, reasonably adjust the breaking time and breaking current size, to avoid arcing, to ensure the normal operation of the equipment and the safety and reliability of the system.