SUPPLY INSTALLATION FOR MINING CONVEYERS AND METHOD OF PREVENTING 6 KV ELECTROCUTION DANGER

The invention relates to a supply installation for mining conveyers whose arrival unit has two measuring transformers (3) with an opto-acoustical alarm (4) switched on by a contact (5), with lamps on every door, in front of some labels (8) describing the method of switching off the 6 KV voltage and the alarm. According to the invention, the switching method consists in switching off the control and operating voltages, the alarm signals being cancelled only by the last operation namely the switching off of the separator in the departure unit of the 20/6 KV station of said conveyer. Inventia se refera la o instalatie pentru alimentarea transportoarelor miniere, la care, in celula de sosire, se monteaza doi transformatori de masura (3), pe al caror secundar, se monteaza un avertizor optic si acustic (4), declansate de un contact (5), cu lampi pe fiecare usa, in dreptul unor etichete (8), care contin metoda de decuplare a tensiunii de 6 kV si a semnalizatorului. Metoda de decuplare, conform inventiei, consta in decuplarea tensiunilor de comanda si servicii, in care numai executarea ultimei manevre conduce la anularea semnalelor de avertizare, anume decuplarea separatorului din celula de plecare a statiei 20/6 kV pentru transportorul respectiv.