Recovery Speed of Axial Flow Gas Blast Interrupter: Dependence on Pressure and dI/dt for Air anf SF6
- 1 September 1974
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Power Apparatus and Systems
- Vol. PAS-93 (5) , 1675-1684
- https://doi.org/10.1109/tpas.1974.293900
Abstract
The dependence of the recovery speed on the pressure and on dI/dt was obtained, for both air and SF6, in a model interrupter of axial flow type employing a Laval nozzle. The measurements were carried out for pressures extending from 100-600 psi (6.8-41 atm) and for dI/dt values ranging from 5-30 A/μs. For both gases the recovery speed was found to increase with pressure, varying as the first power for air and as the 1.4 power for SF6. A stronger than expected dependence on dI/dt was also found for both air and SF6, the recovery speed varying inversely as the square in each case.Keywords
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