SE311392BSE1799667ASE1799667ASE311392BSE 311392 BSE311392 BSE 311392BSE 1799667 ASE1799667 ASE 1799667ASE 1799667 ASE1799667 ASE 1799667ASE 311392 BSE311392 BSE 311392B
Authority
SE
Sweden
Application number
SE1799667A
Inventor
Y Teijeiro B Calvino
Original Assignee
Magrini Fab Riun Scarpa
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Magrini Fab Riun ScarpafiledCriticalMagrini Fab Riun Scarpa
Publication of SE311392BpublicationCriticalpatent/SE311392B/xx
H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
H01H33/7023—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
H01H33/703—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle having special gas flow directing elements, e.g. grooves, extensions