Measuring and evaluation device for continuous, non-contact DC measurement of leakage currents in plastic wet electrostatic precipitators for the detection of short-circuit currents

摘要

The invention relates to a measuring and evaluation device for continuous, contactless direct current measurement of leakage currents in plastic wet electrostatic precipitators with a spray electrode of a collecting electrode and a ground terminal, comprising a measuring device 9 with a current transformer 13, a potential-separated analog output signal 10, 14 of the operating current of the plastic Wet electronic filter between the collecting electrode and the ground potential provides, and a control device 11, for evaluating the output signal 10, the signal average values of the output signal 10 and detects signals of short-circuit currents detected, and an evaluation, by the comparison of the formed signal average values with the signals of detected Short-circuit currents on the local location of shorts within the plastic wet electrostatic filter can be closed.