Method for protecting an electrical energy distribution box

摘要

A method for protecting an electrical energy distribution box (BODP) equipped with a supply current distribution bar (BDP) intended to be connected between an electrical energy source (G) and loads (Q1, Q2, Q3 . . . Qn) to be supplied, comprising detecting an electrical fault in the distribution box (BODP). The detection step comprises: —measuring a supply current drawn on said supply current distribution bar (BDP) by the electrical energy source (G), —measuring load currents distributed from the distribution bar to each of the loads (Q1, Q2, Q3 . . . Qn), and continuous processing of said measurements of current in the course of which the supply current and the load currents are compared with load current threshold values so as to detect overloads.

主权项

1. A method for protecting an electrical energy distribution box (BODP) equipped with a supply current distribution bar (BDP) intended to be connected between an electrical energy source (G) and loads (Q1, Q2, Q3 . . . Qn) to be supplied, comprising detecting an electrical fault in the distribution box (BODP) comprising:
(1) measuring a supply current drawn on said supply current distribution bar (BDP) by the electrical energy source (G), (2) measuring load currents (CA1, CA2, CAn) distributed from the distribution bar to each of the loads (Q1, Q2, Q3 . . . Qn), and (3, 4, 5) continuous processing of said measurements of current in the course of which the supply current and the load currents are compared with values of overload current detection threshold so as to detect overloads wherein the processing steps (3, 4, 5) comprise:
(3) comparing the supply current with a supply current threshold value;
if the supply current is greater than the supply current threshold value, then (4) comparing the load currents with load current threshold values;(5) detecting an electrical fault in the distribution box (BODP) if on completion of the second comparison step (4) none of the load currents is greater than the load current threshold values.