Improvements introduced in the manufacture of devices differential protection of electrical installations against earth fault currents

摘要

Differential protection device against Earth Fault current for Electrical Installations.It consists of a current Transformer (Primary) which is constituted by the phases of the AC Line Side and whose delivery of defect Alternating Signal at the entrance of an Electronic Circuit (b)Sensitive period; a Relay or trigger Winding magneto Dynamic (c) that triggers the Circuit Breaker Mechanical System (d) that disconnects the line Alternating phases of the installation and of the electronic circuit that is made up of an Oscillator (os) controlled by a tension, infrare Tor Phase (d), a Loop filter (F1),An amplifier circuit (DP) and shot by an investor.