Patent ID: 6788067
Filing Date: 2004-09-07
Classification: G01R

Abstract:
A residual current detection device for continuously monitoring to detect imbalances between currents flowing to a load in one or more phase lines and from said load in a neutral line, comprising:a plurality of resistive shunts, each connected in series with one of said phase lines and said neutral line; and circuitry for continuously monitoring to detect an imbalance between said currents flowing through the resistive shunts, said circuitry comprising: an analog-to-digital converter provided for each of the resistive shunts, said analog-to-digital converter for sensing a voltage developed across a corresponding one of the resistive shunts and generating digital signals indicative of the current flowing through the corresponding one of the resistive shunts, said analog-to-digital converter being included in an integated circuit mounted on and electrically connected to the corresponding one of the resistive shunts.