RO102802B1

RO102802B1 - Source of current for welding and electric cutting under water

Info

Publication number: RO102802B1
Application number: RO137549A
Authority: RO
Inventors: Eugen Radulescu; Victor Costencu; Dumitru Dorogan
Original assignee: Institutul Roman De Cercetari Marine
Priority date: 1989-01-05
Filing date: 1989-01-05
Publication date: 1991-12-31
Also published as: RO102802A2

Abstract

Inventia se refera la o sursa de curent pentru sudare si taiere electrica sub apa, având în structura un generator de curent cu excitatie mixta aditionala cu sisteme de reglaj excitatie curent si tensiune, sursa caracterizata prin aceea ca sistemul de comanda a cuplarii portelectrodului are în structura o bucla de comanda locala cuprinzând un prim secundar al unui transformator, un prim releu, un buton de comanda si un comutator, o bucla de comanda de la scafandru cuprinzând un al doilea secundar al transformatorului si un releu de curent, o bucla de executie cuprinzând secundarul unul autotransformator, contacte ale unui releu cu temporizare, contacte ale unui prim contactor de functionare în triunghi, contacte ale releului de curent si ale primului releu si bobina unui al doilea contactor, un circuit de electrosecuritate cuprinzând un releu Reed, releul cu temporizare si al doilea contactor.The invention relates to a current source for electric welding and cutting under water, having the structure of a current generator with mixed excitation with current and voltage excitation control systems, the source characterized in that the portelectrod coupling control system has the structure a local command loop comprising a first secondary transformer, a first relay, a command button and a switch, a diversion command loop comprising a second secondary transformer and a current relay, an execution loop comprising a second autotransformer secondary, contacts of a timed relay, contacts of a first triangle contactor, contacts of the current relay and of the first relay and the coil of a second contactor, an electro-security circuit comprising a reed relay, the second contactor.