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Erik Roger Jonsson

Research Scientist

Erik Roger Jonsson

Research Scientist

Erik Roger Jonsson
Phone: 450 10 212
Department: Electric Power Technology
Office: Trondheim

Publications and responsibilities

Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1690876

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 with atmospheric air as the interrupting medium is compared and assessed. The t...

Year 2019
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1617515

This paper focuses on the arc voltage measurements of electrical arcs burning inside cylindrical tubes in nitrogen at different filling pressures from atmospheric and up to 80 bar. To investigate the effect of ablation, both nonablating ceramic tubes (alumina) and ablating polytetrafluoroethylene (P...

Authors Abid Fahim Niayesh Kaveh Støa-Aanensen Nina Sasaki Jonsson Erik Runde Magne
Year 2018
Type Part of a book/report
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1528706

A supercritical (SC) fluid is formed when both pressure and temperature of a fluid exceed the critical point, where distinct gas and liquid phases no longer exist. SC fluids demonstrate combined properties of gas and liquid, which make them interesting to investigate them as an arc extinction medium...

Authors Abid Fahim Niayesh Kaveh Jonsson Erik Støa-Aanensen Nina Sasaki Runde Magne
Year 2017
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1475813

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 nozzle and contact wear were measured regularly to investigate design ...

Year 2017
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1251486

A simple gas blow switch consisting of an axisymmetric tulip/pin contact and a cylindrical polytetrafluoroethylene (PTFE) nozzle has been used for empirical studies of medium voltage load current interruption in air. Only the thermal phase of the interruption is considered. Based on the results of m...

Authors Aanensen Nina Sasaki Runde Magne Jonsson Erik Teigset Anders Dall'Osso
Year 2016
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1196167

Replacing SF6 with air as the arc quenching medium in switching equipment is favorable from an environmental point of view, but may be technically difficult for compact devices. Medium-voltage load break switches have modest current and voltage ratings, typically 630 A/24 kV, and are thus expected t...

Year 2015
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1151167

Air is an environmentally benign alternative to SF $_6$ for use in medium-voltage load-break switches. A simple, axisymmetric test switch has been used for empirical studies of the thermal phase of current interruption in atmospheric air. The purpose is to quantify how the pressure drop across the n...

Year 2015
Type Journal publication
Publication
https://www.sintef.no/en/publications/publication/?pubid=CRIStin+1142777

Near an electric arc some polymers, known as ablation materials, change the properties of the arcing medium in a beneficial manner. The interruption capability for current interruption improves by increasing the pressure and the heat dissipation from the arc. The present paper studies medium voltage...

Authors Gjendal Gaute Jensen Jonsson Erik Runde Magne
Year 2014
Type Part of a book/report