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ASPECTS REGARDING THE VOLTAGE IMPULSE IGNITION TEST FOR STATOR INSULATION SYSTEMS OF ELECTRIC MOTORS USED IN POTENTIALLY EXPLOSIVE ATMOSPHERE

Dragoş Fotău

First published: 2019-06-20https://doi.org/10.5593/sgem2019/1.2/s06.084View metrics

Abstract

Evaluation of explosion-proof protected electrical equipment in scope of certification is extremely important considering the risk of explosion that has to be minimized in order to ensure life safety and health of workers and to prevent damaging of property and the environment, as well as free movement of goods when they meet the essential safety requirements at European level. The standards SR EN 60079-0 (Explosive atmospheres. Part 0: Equipment. General requirements) and one or more of the standards containing the specific requirements for the type(s) of protection applied to equipment (ex. SR EN 60079-7 for the type of protection increased safety "e"), are used to perform the assessment. Due to the fact that electric motors with type of protection Increased Safety, whose supply voltage exceeds 1000 V, presents a high risk of sparks occurring in windings, it is necessary to perform tests to verify that the insulation of the windings is adequate and does not lead to electric discharge (through electric springs or sparks) at winding levels. The tests by which these aspects are verified are the voltage impulse ignition test and the overvoltage-ignition test, applicable to electric motors with increased safety protection type.

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Publication details

Title
ASPECTS REGARDING THE VOLTAGE IMPULSE IGNITION TEST FOR STATOR INSULATION SYSTEMS OF ELECTRIC MOTORS USED IN POTENTIALLY EXPLOSIVE ATMOSPHERE
Authors
Dragoş Fotău
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 19th SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings19th, Science and Technologies in Geology, Exploration And Mining
Publisher
STEF92 Technology
Year
2019
Pages
671-676
SWS Citekey
Fotau20196671676
ISSN
1314-2704
ISBN
978-619-7408-77-5
Language
en
Publication type
Conference Paper
Keywords
increased safetycertificationexplosive atmospheretest.
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