How long is the service life of VS1 vacuum circuit breaker?
2023-03-06
VS1 vacuum circuit breaker is one of the important components commonly used in our high-voltage complete sets of equipment, so how long is its lifespan? To what extent should we replace the vacuum circuit breaker? Knowing these, we can better prevent unnecessary losses caused by vacuum circuit breakers to our electricity consumption. Let's focus on it below.
We have used the VS1 vacuum circuit breaker and know that it is mainly composed of vacuum interrupter (commonly known as vacuum tube), operating mechanism, and insulating parts. The handcart type also includes chassis, contacts, and contact arms. Wait, so we only need to know the life of these three blocks to know the life of the entire VS1 vacuum circuit breaker.
The vacuum life of the vacuum interrupter is used to measure whether the internal vacuum degree of the vacuum interrupter is within the allowable vacuum degree after transportation, storage, installation and operation from the date of delivery of the vacuum interrupter. Whether the vacuum life is over depends mainly on whether the vacuum pressure in the arc extinguishing chamber is above the maximum allowable working value after testing.
The mechanical life of the operating mechanism refers to the number of mechanical actions of the circuit breaker since the day it leaves the factory. The opening and closing operations are counted as one time, and generally can reach more than 10,000 times. The mechanical life mainly depends on the life of the stainless steel bellows, and the end of the mechanical life is the rupture of the bellows.
The reason for the accelerated damage of the bellows is the influence of the use environment, such as chemical corrosion, high temperature, etc. Plastic deformation of bellows due to improper use or adjustment.
When working, the actual stroke is too large or the buffer force of the buffer of the operating mechanism is too large. The guide device does not meet the requirements, the moving contact rod shakes or the bellows rubs when it moves. The bellows are damaged by excessive torque.
The electrical life of the VS1 vacuum circuit breaker refers to the breaking times of the rated short-circuit current or the breaking times of the rated working current. Whether the electrical life is over can be determined by the allowable wear thickness of the contact. When the wear of the contact reaches the specified value, it means that the electrical life of the arc extinguishing chamber is over.
We have used the VS1 vacuum circuit breaker and know that it is mainly composed of vacuum interrupter (commonly known as vacuum tube), operating mechanism, and insulating parts. The handcart type also includes chassis, contacts, and contact arms. Wait, so we only need to know the life of these three blocks to know the life of the entire VS1 vacuum circuit breaker.
The vacuum life of the vacuum interrupter is used to measure whether the internal vacuum degree of the vacuum interrupter is within the allowable vacuum degree after transportation, storage, installation and operation from the date of delivery of the vacuum interrupter. Whether the vacuum life is over depends mainly on whether the vacuum pressure in the arc extinguishing chamber is above the maximum allowable working value after testing.
The mechanical life of the operating mechanism refers to the number of mechanical actions of the circuit breaker since the day it leaves the factory. The opening and closing operations are counted as one time, and generally can reach more than 10,000 times. The mechanical life mainly depends on the life of the stainless steel bellows, and the end of the mechanical life is the rupture of the bellows.
The reason for the accelerated damage of the bellows is the influence of the use environment, such as chemical corrosion, high temperature, etc. Plastic deformation of bellows due to improper use or adjustment.
When working, the actual stroke is too large or the buffer force of the buffer of the operating mechanism is too large. The guide device does not meet the requirements, the moving contact rod shakes or the bellows rubs when it moves. The bellows are damaged by excessive torque.
The electrical life of the VS1 vacuum circuit breaker refers to the breaking times of the rated short-circuit current or the breaking times of the rated working current. Whether the electrical life is over can be determined by the allowable wear thickness of the contact. When the wear of the contact reaches the specified value, it means that the electrical life of the arc extinguishing chamber is over.
As long as the insulating parts, chassis, contacts, and contact arms are used properly, and the environment is paid attention to and regular maintenance is done, their lifespan will be relatively long.
