PROTECTION OF A POWER SUPPLY INCLUDING A PLURALITY OF BATTERIES IN PARALLEL AGAINST AN EXTERNAL SHORT CIRCUIT

摘要

The invention concerns an electrical installation (1), comprising: - a circuit breaker (5) having a cut-off capacity PdC and a cut-off current Is; - an ammeter (4) measuring the current; - a source of DC voltage comprising batteries (3) connected in parallel, connected in series with the circuit breaker, the sum of the short-circuit currents of the batteries connected in parallel being higher than the cut-off capacity PdC of the circuit breaker (5), a plurality of said batteries comprising a respective switch (310) capable of opening a connection between the battery of same and the circuit breaker; - a control circuit (2) configured to detect that the current passing through the circuit breaker (5) is higher than the cut-off current Is and to control the opening of a plurality of said switches (310) in order to apply, through the circuit breaker (5), a current higher than the cut-off current Is of same and lower than the cut-off capacity PdC of same.