current supply arrangement 1 via the output 103 of the arrangement the arrangement 10 according to the invention according to fig2 further includes a fourth means i max for detecting a current which detects a current flowing from the second terminal 102 to the first terminal 101 through the series connection r 1 r 2 r 3 the fourth means i max includes a measuring element 109 arranged after the first terminal 101 the fourth means i max may also be a current relay in the event of a ground fault a current flows via the series connection of the resistors r 1 r 2 r 3 which is detected by the fourth means i max and is indicated to the controller 12 of the current supply arrangement 1 via the terminal 103 of the arrangement 10 the measuring element 109 is furthermore connected with a means i nt for integrating which integrates the measured current the integration of the current flowing through the series connection of the resistors r 1 r 2 r 3 represents the energy flowing during a ground fault the amount of the dissipated energies can be used to distinguish ground fault from another non safety critical phenomenon lastly the arrangement illustrated in fig2 includes a means u.