Blar i SINTEF Open på forfatter "Jonsson, Erik"
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Arc extinction with nitrogen at 1-40 bar in a puffer-like contact configuration
Støa-Aanensen, Nina Sasaki; Espedal, Camilla; Rokseth, Oddgeir; Jonsson, Erik; Runde, Magne (Peer reviewed; Journal article, 2021)To develop cost-efficient subsea switchgear for large sea depths, the extinction of arcs under high filling pressures must be understood. In this work, arc-extinction experiments have been performed with a puffer-like ... -
Comparison of Different Air Flow Concepts for a Medium Voltage Load Break Switch
Støa-Aanensen, Nina Sasaki; Jonsson, Erik; Runde, Magne (Journal article; Peer reviewed, 2019)The research and development work towards a compact SF6-free load break switch for the medium voltage range has led to several design proposals. The interruption capability of three different nozzle and gas flow concepts ... -
Contact and nozzle wear from 100 interruptions for a puffer-type air load break switch
Støa-Aanensen, Nina Sasaki; Jonsson, Erik; Runde, Magne (Journal article; Peer reviewed, 2017)One type test requirement for medium voltage load break switches is to interrupt 100 consecutive "mainly active loads". A puffer-type switch with axial-blown arc has been tested according to the 630 A/24 kV ratings. The ... -
Eco-efficient puffer-type load break switch for medium voltage applications
Attar, Elham; Saxegaard, Magne; Hyrenbach, Maik; Homayonifar, Pouria; Bratsberg, Tor; Grauhaug, Ole; Støa-Aanensen, Nina Sasaki; Jonsson, Erik (Journal article; Peer reviewed, 2019) -
Effect of Filling Pressure on Post-Arc Gap Recovery of N2
Abid, Fahim; Niayesh, Kaveh; Viken, Egil; Støa-Aanensen, Nina Sasaki; Jonsson, Erik; Meyer, Hans Kristian Hygen (Peer reviewed; Journal article, 2020)Experimental investigation of the effect of filling pressure on the post-arc dielectric recovery characteristics of nitrogen is reported in this paper. A half-cycle arc current duration of 540 μs followed by a 10 kV pulse ... -
Experimental investigation on ablation-assisted current interruption - Experimental setup and preliminary results
Taxt, Henning; Niayesh, Kaveh; Jonsson, Erik; Runde, Magne (Chapter, 2016)This paper presents a flexible setup to investigate ablation-assisted interruption of load currents. The electrical test circuit is grid connected with a transformer secondary voltage from 6.9 kV to 24 kV. The applied ... -
Internal pressures and pressure gradients in mass-impregnated HVDC cables during current cycling
Runde, Magne; Jonsson, Erik; Magnusson, Niklas; Solheim, Kristian Thinn (Peer reviewed; Journal article, 2020)The internal pressures in the insulation of two 5-m long pieces of a state-of-the art mass-impregnated non-draining subsea cable have been measured under load current cycling at ambient temperatures ranging from 3 to 37 ...