Method and system for preventing the formation of an electric arc in a connector which is inserted in a power load supply line

System to prevent the formation of electrical arcs in a connector inserted into a supply line of a power load, said connector (11) being of the type that is made up of first and second electroinsulator supports (1,2) carriers of at least one pair of terminals (3,4) capable of freely coupling to the plug, said terminals (3,4), being in a coupling position for said electroinsulatorsupports (1,2),joined electrically between themselves establishing a channel (5) for the passing of electricity towards said power load (10) and, in a uncoupling position for the electroinsulator supports (1,2), the terminals (3,4) separate physically interrupting said channel (5), said connector being inserted in a network of supply and distribution of electrical energy in which there is a first connection (14) between a first point (22) situated in said channel (5) before the connector (11) and an electronic unit (20) to continually detect a first voltage (V1) and/or intensity of supply of said network;

• the aforementioned voltage and/or intensity being such that the aforementioned physical separation of the pair of terminals (3,4) may generate an electrical arc, characterized by consisting of a second connection (15) between a second point (23) situated in said channel (5) near to the power load (10) and after the connector (11) and said electronic unit (20) to detect a second voltage (V2) and/or intensity at said second point (23), an electronic comparative device (21) being planned in the electronic unit (20) to compare said first and second voltages (V1 and V2) and/or intensities, a microprocessor (8) to process the result of said comparison and a protection device by disconnection (7) able to cut, at the request of the microprocessor (8), the supply of electrical energy to the aforementioned channel (5) in the event that the result of said comparison, in a predetermined minimum time interval, of a difference between the first and second voltages (V1 and V2) and/or intensities greater than a predetermined threshold for a time period sufficient to prevent the formation of an electrical arc, further characterized by said network of supply and distribution of electrical energy including several of said loads (10a, 10b) supplied through respective channels (5a, 5b) for the passing of electrical energy, each one with said first and second detection connections(14, 15) and comparative device (21), at least one of said connectors(11a, 11b) being inserted into each one of said channels (5a, 5b) between the first and second points (22,23), an identification circuit (16) being ready, associated to the electronic unit (20) to differentiate the line or lines (5a, 5b) for which the result of the comparison is greater than said predetermined threshold and generates a priority interruption to the microprocessor (8) which acts on the protection device by disconnection (7) to can out the aforementioned cut in the supply of electrical energy to the channel (5a, 5b) involved for a time period sufficient to prevent the formation of an electrical arc.