Industrial earth leakage protection

The "protection" and "continuity" of the electrical power supply are two terms that must not be separated if we wish to guarantee the safety of users and electrical installations. The recent addition of receivers or loads that generate distortion in the electricity grid (speed variators, electronic startup units, computer equipment, lighting with electronic ballasts, etc.) has made necessary the use of protection systems that can distinguish between defects in the installation and the electrical alterations that cause the unwanted tripping of protection systems.