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Erik Roger Jonsson

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Erik Roger Jonsson

Forsker

Erik Roger Jonsson
Telefon: 450 10 212
Avdeling: Elkraftteknologi
Kontorsted: Trondheim

Publikasjoner og ansvarsområder

Publikasjoner

Publikasjon

Arc Voltage Characteristics in Ultrahigh-Pressure Nitrogen Including Supercritical Region

https://www.sintef.no/publikasjoner/publikasjon/?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...

Forfattere Abid Fahim Niayesh Kaveh Jonsson Erik Støa-Aanensen Nina Sasaki Runde Magne
År 2017
Type Tidsskriftspublikasjon
Publikasjon

Contact and nozzle wear from 100 interruptions for a puffer-type air load break switch

https://www.sintef.no/publikasjoner/publikasjon/?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 requiremen...

År 2017
Type Tidsskriftspublikasjon
Publikasjon

Empirical Relationships between Air-Load Break Switch Parameters and Interrupting Performance

https://www.sintef.no/publikasjoner/publikasjon/?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...

Forfattere Aanensen Nina Sasaki Runde Magne Jonsson Erik Teigset Anders Dall'Osso
År 2016
Type Tidsskriftspublikasjon
Publikasjon

Air-Flow Investigation for a Medium-Voltage Load Break Switch

https://www.sintef.no/publikasjoner/publikasjon/?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...

År 2015
Type Tidsskriftspublikasjon
Publikasjon

Interruption in air for different medium-voltage switching duties

https://www.sintef.no/publikasjoner/publikasjon/?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...

År 2015
Type Tidsskriftspublikasjon
Publikasjon

Ablation-Assisted Current Interruption in a Medium Voltage Load Break Switch

https://www.sintef.no/publikasjoner/publikasjon/?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...

Forfattere Gjendal Gaute Jensen Jonsson Erik Runde Magne
År 2014
Type Del av bok/rapport
Publikasjon

Current interruption in air for a medium-voltage load break switch

https://www.sintef.no/publikasjoner/publikasjon/?pubid=CRIStin+1095244

The current interrupting capability of a load break switch (LBS) depends on many design parameters, such as contact and nozzle geometry, contact movement, and gas flow. For developing more compact gas blow LBSs for air, it is necessary to find design recommendations where each parameter is addressed...

År 2014
Type Tidsskriftspublikasjon
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