applied between the connections 6 7 fig2 will be referenced below the diagram in fig2 shows a voltage current characteristic curve on which three operating points b 1 b 2 b 3 are marked wherein for each operating point b 1 b 2 b 3 the exact voltage curve measured with an oscilloscope is shown as an example in separate small diagrams the voltage u in volts plotted in the characteristic curve as a function of current i in amperes is to be understood as an effective value the operating point b 1 is in a region of the characteristic curve in which an approximately linear relationship between the increase of current i and the increase of the effective voltage u can be observed in time profile the voltage has no strong fluctuations the second operating point b 2 corresponds to a local maximum of the voltage current characteristic curve the associated time resolved voltage curve shows that occasional voltage dips occur at this operating point b 2 each voltage dip corresponds to a current breakdown wherein the voltage is then reestablished finally at the operating point b 3 continuous voltage dips occur which means a lower effective voltage in comparison to the operating point b 2 for a simultaneously higher current flow the bearing arrangement 1 is preferably operated at the second operating point b 2 at which the current intensity i equals approximately 200 u03bca deviating from this current intensities are also suitable that are below or.