Axially blown SF6-arcs around current zero

Application of computational fluid dynamics tools to circuit-breaker flow analysis

“…6) and the real gas result of [18] which are almost flat within the high temperature region, the present result gives a slightly curved profile. This shape is in good concordance with the measurements of [17] obtained with a slightly lower current of 870 A . For the arc radius, the real gas result r = 2.94"…”

“…The present model has been used to calculate an axially blown SF6 arc in a dual-flow geometry, the "enlarged" geometry of Schade & Ragaller [16], which ressembles the "Geometry A of Graf et al [17]. The geometry and the computational grid are shown in Fig.…”

Arc temperature profile measurement and characteristic analysis on an SF 6 high‐voltage CB

“…In [7] copper lines Cu I 510.5 and Cu I 529.3 nm are used to calculate the temperature. Graf et al [8] injected 7 bar SF6 gas into the throat of nozzle mould, which under the base pressure of 1.3 bar. Moreover, they measured ion line of S at 545.4 and 532.1 nm.…”

Temperature profiles of an ablation controlled arc in PTFE: I. Spectroscopic measurements

“…Additionally the two lines method was applied to atomic and ionized sulphur lines S I 469.5 nm and S II 545.4 nm. The two lines method was also applied by Graf et al [6] to determine the plasma temperature using S II 545.4 nm / S II 532.1 nm. Tiemann [7] used the S II 545.4 nm line.…”