10/21/2019

Vacuum auxiliary switch for oil free vacuum pump


Oil-free vacuum pump is a kind of mechanical vacuum pump which can operate without any oil for lubrication. It has the advantages of simple structure, easy operation, convenient maintenance and no pollution to the environment.
The breaking performance of vacuum auxiliary switch for oil-free vacuum pump depends on the parameters of the loop
The switching and closing current of the vacuum auxiliary switch determines the characteristics of the vacuum reed. At present, several domestic manufacturers are claimed to be the use of inlet reed, issued by the technical parameters are different. When selecting vacuum auxiliary switch, the breaking performance of the selected auxiliary switch should conform to the parameters of the electrical circuit. Because the breaking performance of domestic vacuum auxiliary switch is mostly lower than F series auxiliary switch, and the overload capacity is poor, it cannot be replaced arbitrarily. Try to find out the electrical parameters of the circuit and the performance of the vacuum auxiliary switch. If used as a circuit breaker, closing coil loop, to consider the opening and closing coil current value.
The function of oil-free vacuum pump is to remove gas molecules from the vacuum chamber, reduce the gas pressure in the vacuum chamber, and make it reach the required vacuum degree. Generally speaking, there is a large range from the atmosphere to the extremely high vacuum. So far, no vacuum system can cover this range.

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