A method for increasing the service life of the contact elements of a switching device with disconnector properties and corresponding switching device

摘要

The invention relates to a method for increasing the service life of the contact elements (ks, kl) of a switching device (sd) with disconnector properties and a corresponding switching device (sd), which a load (z) with an electric energy source (ms), and comprising: a) a switch contact (k), of the disconnector properties, and b) a, as an electrical energy storage means (s) constructed wiring (b), the to the load-side contact element (kl) is connected, wherein the energy storage device (s) of the energy source (ms) in each case on the operating voltage (uh) is charged, wherein the separation of the contact elements (ks, kl) first a contact phase passes through with interrupt contact surface, in which the contact elements on at least one contact - make contact with, and wherein the energy storage device (s), at least during the contact phase, a replacement - operating voltage (uc) provides. The service life of the contact elements (ks, kl) to be extended in, it is proposed that the energy store (s) the replacement - operating voltage (uc) in the contact phase maintains in such a way that the temperature on the at least one contact - point in each case below the melting point.