Title :
SF6 decomposition under power arcs. I. Physical aspects
Author :
Belmadani, B. ; Casanovas, J. ; Casanovas, A.M. ; Grob, R. ; Mathieu, J.
Author_Institution :
Centre de Phys. Atomique, Univ. Paul Sabatier, Toulouse, France
fDate :
12/1/1991 12:00:00 AM
Abstract :
Deals with sulfur hexafluoride (SF6) decomposition under power arcs. The arcs were generated in two types of Alsthom circuit breakers, a puffer gas blast model FP-62, and a self-generated flow prototype. The gaseous decomposition products formed during the tests were analyzed and assayed by gas-phase chromatography. The main stable gaseous compounds identified were: SOF2, SO2, SO2F2 and, as the arc strikes an organic polymeric material (nozzle made of PTFE/CaF2 80/20), CF4. The yields of the products were measured against the following parameters: dissipated energy, arc current, shape of the current wave, SF6 pressure, water content, shape of the nozzle, and presence of an adsorbent
Keywords :
arcs (electric); chromatography; gas blast circuit breakers; gaseous insulation; sulphur compounds; Alsthom circuit breakers; Physical aspects; SF6; SO2; SO2F2; SOF2; adsorbent; arc current; current wave; decomposition; dissipated energy; gas-phase chromatography; nozzle; power arcs; puffer gas blast model; self-generated flow prototype; tetrafluoromethane; water content; yields; Circuit breakers; Circuit testing; Current measurement; Energy measurement; Organic materials; Polymers; Pressure measurement; Prototypes; Shape measurement; Sulfur hexafluoride;
Journal_Title :
Electrical Insulation, IEEE Transactions on
