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http://dx.doi.org/10.5207/JIEIE.2007.21.5.090

Failure Analysis of LV URD Cable based on FMEA  

Shong, Kil-Mok (전기안전연구원 설비안전연구그룹)
Han, Woon-Ki (전기안전연구원 설비안전연구그룹)
Kim, Young-Seok (전기안전연구원 설비안전연구그룹)
Kim, Sun-Gu (전기안전연구원 설비안전연구그룹)
Kwak, Hee-Ro (숭실대학교 전기제어시스템 공학과)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.21, no.5, 2007 , pp. 90-98 More about this Journal
Abstract
The objective of this investigation was to reveal the cause of the faulted cable(LV URD(low voltage underground) cable). For the analysis, various types or equipments such as external pattern, thermal pattern, surface structure, thermal analysis, and property distribution were deployed. The international standards and the specification provided by the manufacturer of faulted cable were examined whether it fit the standards. The summary is as follows. (1) Discovered as a factor lowering insulation performance of the faulted cable: minimum thickness of the insulation layer specified by IEC 60502-1 and IEC 60811-1-1 was not fit. (2) Infrared absorption peaks measured by FT-IR spectrometer revealed that the measurements made for the same material did not conform and it is an important basis for proving heterogeneous composition of the insulation material. (3) It was found that PVC bedding was thermally fragile and therefore long term exposure at the site could cause similar fault pattern.
Keywords
FMEA(Failure modes and effects analysis); Faulted cable; PVC Sodding; Thermal Analysis; IEC 60502-1; IEC 60811-1-1; FT-IR Spectrometer;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
1 한국전기안전공사, '전기재해통계분석', 14호, 한국전기안전공사, pp.67-74, 2005
2 송길목, 최충석, 김향곤, 김영석, 'AC 전류에 의해 용융된 나전선의 발열 특성', KIIEIE Vol.20, No.1, pp.77-84, Jan. 2006   과학기술학회마을   DOI
3 송길목, 최충석, 노영수, 곽희로, '트래킹에 의해 열화된 페놀수지의 탄화특성', Trans. KIEE. Vol. 53C, No. 1, pp.1-7, JAN. 2004
4 송길목, 최충석, 'IT기반을 이용한 사고분석시스템 개발동향', 전기전자재료학회 Journal, pp.21-29 Apr. 2006
5 IEC, 'Power cables with extruded insulation and their accessories for rated voltages from 1[kV](Um=1,2[kV]) up to 30[kV](Um=36[kV]) - Part 1: Cables for rated voltages of 1[kV](Um=1,2[kV]) and 3[kV](Um=3,6[kV])', IEC 60502-1, Edition 1.1, 1998
6 Kil-Mok Shong, Chung-Seog Choi, Hyung-Rae Kim, Dong-Woo Kim, Hee-Ro Kwak, 'A Study on the Electric Fire Analysis of Insulating Materials Due to the Tracking Deterioration', 2002 ACED & K-J Symposium, pp.606-609, 2002
7 Peter H. F. Morshuis, 'Degradation of Solid Dielectrics due to Internal Partial Discharge: Some Thoughts on Progress Made and Where to Go Now', IEEE Trans. on DEI, Vol. 12, No. 5, pp.905-913, 2005   DOI   ScienceOn
8 H. Zang, R. Hackam, 'Electrical Surface Resistance, Hydrophobicity and Diffusion Phenomena in PVC', IEEE Trans. DEI, Vol. 6, No. 1, pp.73-83, 1999   DOI   ScienceOn
9 B.X. Du, 'Discharge Energy and de Tracking of Organic Insulating Materials', IEEE Trans. DEI Vol. 8, No. 6, pp.897-901, 2001   DOI   ScienceOn
10 J. Montesinos, R. S. Gorur, B. Mobasher, D. Kingsbury, 'Mechanism of Brittle Fracture in Nonceramic Insulators', IEEE Trans. DEI Vol. 9, No. 2, pp.236-243, 2002   DOI   ScienceOn
11 L.L. Alston, 'High-voltage Technology', Oxford University press, pp.17-59, pp.158-195
12 Malcolm P. Stevens, 'Polymer Chemistry an Introduction 3Ed', Oxford, pp.395-404, 1999
13 D.S.Miller, 'Discharge Characteristics', A.A. Balkema, Rotterdam, pp.3-151, 1994
14 Babrauskas, V., 'Fires due to Electric Arcing: Can 'Cause' Beads Be Distinguished from 'Victim' Beads by Physical or Chemical Testing?', Fire and Materials, pp.189-201, 2003
15 IEC, 'Common test methods for insulating and sheathing materials of electric cables - Part 1 : Methods for general application - Section 1: Measurement of thickness and overall dimensions - Tests for determining the mechanical properties'. IEC 60811-1-1, 2002
16 John D. DeHaan, 'Kirk's Fire Investigation', 5th edition, Prentice Hall, 2002
17 Kil-Mok Shong, Hyang-Kon Kim, Chung-Seog Choi and Hee-Ro Kwak, 'A Study on the Electrical Fire Analysis of PVC Insulateds Flexible Cord by Over-Current', KIEE 2003spring conference, pp.131-133, 2003