The Ground Noise Reduction filter is a new Enerdoor product designed to improve the quality of the PE ground inside machines. Today’s industrial equipment has a combination of switching devices such as power supplies, servo drives and variable frequency drives (VFDs) and electronic components such as PLCs, sensors and safety devices. Servo drives, VFDs and other switching devices typically use IGBTs that switch in high frequency ranges. This phenomenon causes common mode noise in the high frequency band. The Enerdoor Ground Noise Reduction filter is designed to reduce radio frequency noise inside machines.