SYSTEM FOR PLACING SOLAR POWER PLANTS INTO A SAFE CONDITION

摘要

A system for placing into a safe condition one or more solar systems "I", each system comprising a plurality of solar panels "P", which are electrically connected in series, so as to form one or more strings "S". Said system comprises at least one central unit 3, which is electrically connected to one or more strings "S" and to a power supply source 2, and comprises at least one control unit 32; at least one peripheral unit 4, which is electrically connected to at least one string "S" and to said central unit 3, and comprises a plurality of switches (43, 33), which are properly connected to one or more panels "P" comprised in said string "S". The central unit 3 is adapted, when the voltage of the power supply source 2 in interrupted, to isolate at least one of the strings "S" by interrupting the current in said string "S" and by disconnecting it opening said plurality of switches 43, so that it is galvanically isolated and presents, at its ends, at most a predetermined safety low voltage.