Induction motor rotor cage faults as ignition sources of explosive atmosphere - research on heating
| Autor: | Mario Vražić, Damir Sumina, Ivica Gavranic |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
explosion protection
ignition induction motor rotor fault technical diagnostics Computer science 020502 materials General Engineering 02 engineering and technology 020501 mining & metallurgy Quantitative Biology::Subcellular Processes 0205 materials engineering lcsh:TA1-2040 asinkroni motor kvar rotora paljenje protueksplozijska zaštita tehnička dijagnostika Physics::Chemical Physics lcsh:Engineering (General). Civil engineering (General) |
| Zdroj: | Tehnički Vjesnik, Vol 24, Iss 4, Pp 1025-1031 (2017) Tehnički vjesnik Volume 24 Issue 4 |
| ISSN: | 1848-6339 1330-3651 |
| DOI: | 10.17559/tv-20160308082424 |
| Popis: | U radu se razmatraju rizici pojave uzročnika paljenja unutar elektromotora u prostorima ugroženim eksplozivnom atmosferom. Istraživanje pojave uzročnika paljenja zbog oštećenja kaveza rotora asinkronog motora temeljni je dio ovog rada. Istraživana su zagrijavanja kaveza rotora protueksplozijski zaštićenog "Ex e" motora kod različitih razina oštećenja. Ispitivanjima je potvrđena pretpostavka da bi određeni kvarovi kaveza rotora mogli biti djelotvorni uzročnici paljenja. Rezultatima istraživanja produbljene su spoznaje o mogućnostima i rizicima pojavljivanja uzročnika paljenja eksplozivne atmosfere stvaranjem vrućih površina zbog kvarova u kavezu rotora. Spoznaja da tradicionalni pristup analize protueksplozijske zaštite nije dostatan za otkrivanje spomenutih kvarova važan je rezultat ovog rada. This paper discusses the risks of ignition sources of electric motors in areas at risk of explosive atmospheres. The basis for this work is research on the occurrence of the source of ignition resulting from an induction motor rotor cage fault. The research was targeted at the heating effects on the rotor cage of the "Ex e" type of protection motor, as a result of different levels of rotor damage. The main presumption that specific rotor cage faults could become effective sources of ignition was empirically verified. Results of this research provide a deeper insight into the possibilities and risks of the occurrence of ignition sources in explosive atmospheres caused by hot spots generated in the rotor cage due to hidden faults. An important result of this research is the realization that a traditional approach to the analysis of explosion protection is not sufficient in identifying these faults. |
| Databáze: | OpenAIRE |
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