GFCI compatible system and method for activating relay controlled lines having a filter circuit between neutral and ground

摘要

A GFCI compatible system and method for activating relay controlled lines having a filter circuit between neutral and ground is described herein. Specifically the disclosure teaches a GFCI compatible system for reducing CMN. A CMN Suppressor can comprise a hot line, a neutral line, and a ground line. The first ends of the hot line, the neutral line, and the ground line can be connected to a GFCI protected hot node, a GFCI protected neutral node, and an electrical ground. The second ends of the hotline, the neutral line, and the ground line can be connected to a CMN sensitive device hot line, a CMN sensitive device neutral line, and a CMN sensitive device ground line. The system can further comprise a high pass filter, a hot line relay contact, a neutral line relay contact, a hot line relay, and a neutral line power relay.

主权项

1. A GFCI compatible system for reducing common mode noise comprising:
a hot line having a first end connectable to a GFCI protected hot node and a second end connectable to a common mode noise (CMN) sensitive device hot line; a neutral line having a first end connectable to a GFCI protected neutral node and a second end connectable to a CMN sensitive device neutral line; a ground line having a first end connectable to an electrical ground and a second end connectable to a CMN sensitive device ground line; a high pass filter connected between said neutral line and said ground line; a hot line relay contact operable to open and close; a neutral line relay contact operable to open and close; a hot line relay capable of opening and closing said hot line relay contact; and a neutral line power relay capable of opening and closing said neutral line relay contact, wherein said neutral line relay is capable of opening said neutral line relay contact when said hot line relay contact is open, further wherein said hot line relay is capable of closing said hot line relay contact when said neutral line relay contact is closed.