What is the filter function?

QWhen should the filter function provided by the 3282 and 3293-50 be used?


The growing popularity of switching power supplies and inverter-equipped devices has made it more likely that harmonic components may be superposed on leak current waveforms. The filter function provided by the 3283 and 3293-50 corresponds to the earth leakage breaker (ELB) response frequency. By turning the filter function on, you can achieve the same frequency bandwidth (180 Hz) as an ELB, allowing measurement of leak current with a commercial power frequency component.