Method and apparatus for measuring the to asymmetrical contacts, in particular to encapsulated contacts, occurring mechanical and / or magnetic forces

摘要

The mechanical and/or magnetic forces at asymmetrical contacts of sealed reed switches are measured by accelerating the contacts (5) to be tested in a centrifuge (1, 2), drivable at an adjustable angular velocity. The switching state changes of the contacts, i.e. their breaking or making, effected by the centrifugal forces are determined in a measuring current circuit, arranged over the switching path of each contact. The determined values are associated with the instantaneous value of the angular velocity of the centrifuge and thus also to the centrifugal forces affecting the contact elements. Preferably the angular velocity of the centrifuge is determined at which the contact changes its natural condition (breaking or making) without effect of a magnetic excitation.