DOI QR코드

DOI QR Code

오염물질에 따른 HFIX 절연전선 피복의 특성 변화에 관한 연구

Characteristics of HFIX Insulated Wire Sheaths Contaminated by Pollutants

  • 최수길 (호서대학교 소방방재학과 대학원) ;
  • 남영재 (호서대학교 소방방재학과 대학원) ;
  • 진세영 (호서대학교 소방방재학과 대학원) ;
  • 김시국 (호서대학교 소방방재학과)
  • Choi, Su-Gil (Dept. of Fire and Disaster Protection Engineering, Hoseo Univ.) ;
  • Nam, Yeong-Jae (Dept. of Fire and Disaster Protection Engineering, Hoseo Univ.) ;
  • Jin, Se-Young (Dept. of Fire and Disaster Protection Engineering, Hoseo Univ.) ;
  • Kim, Si-Kuk (Dept. of Fire and Disaster Protection Engineering, Hoseo Univ.)
  • 투고 : 2020.04.04
  • 심사 : 2020.05.11
  • 발행 : 2020.06.30

초록

본 논문은 오염물질에 따른 HFIX 절연전선 피복의 특성변화에 관한 연구이다. HFIX 절연전선 피복을 오염시키기 위해 전선의 내수성시험 항목인 KS C IEC 60811-1-3 규격을 인용, 오염물질을 선정하고 선정된 오염물질에 시료를 노출시켜 주차 별 최대 4주간 노출된 실험시료를 제작하였다. 그 후 주차 별 시료들을 대상으로 최대인장하중 및 신장률을 측정하였다. 오염노출 기간이 길어짐에 따라 최대인장하중이 상온시료의 경우 6.22%, 고온시료 6.52%, 방청윤활제 19.94% 감소하였고, 신장률 또한 급격하게 감소하여 피복 특성저하가 뚜렷하게 나타났다. 추가적인 주사전자현미경을 이용한 표면 분석결과 오염기간이 길어짐에 따라 천공, 갈라짐, 용융 등의 구조 변경 현상이 발생되어 기계적 특성이 감소되는 것으로 나타났다. 따라서 절연전선의 성능저하를 방지하기 위해 검사주기 및 보수시기의 마련이 필요할 것으로 생각된다.

In this study, the characteristics of HFIX insulated wire sheaths contaminated by pollutants were examined. KS C IEC 60811-1-3 standard was followed in performing the water-resistance wire tests. Pollutants were selected, and the specimens were exposed to the pollutants for a maximum duration of four weeks. The maximum tensile load and the elongation rate were measured each week. As the period of pollution exposure increased, the maximum tensile load of the specimens decreased by 6.22% and 6.52% at room temperature and high temperature, respectively, and 19.94% for specimens coated with a rust-proof lubricant. The elongation rate also decreased rapidly, such that the reductions in the properties of the sheath were significant. From the analysis of the surfaces using a scanning microscope, as the contamination period increased, structural changes such as perforation, split, and melting occurred, and the mechanical properties of the specimens decreased. Therefore, it is necessary to develop and follow an inspection cycle and periodically carry out repairs to prevent the deterioration of insulated wires.

키워드

참고문헌

  1. Ministry of Public Safety and Security, "National Fire Information Center E-Fire Statistics" (2019).
  2. M. S. Hwang, M. Y. Lee, J. C. Lee, D. S. Shin, Y. S. Kim and J. C. Kim, "Analysis of Contruction Problems about HFIX and Study of Improvement Method on Electric Wire and Cable in Low Voltage Electric Equipment of Integrated Test-site Based on IEC 60364", Journal of the Korean Institute of Illuminating and Electrical Installation, Vol. 30, No. 9, pp. 56-63 (2016). https://doi.org/10.5207/JIEIE.2016.30.9.056
  3. KS C IEC 60811-1-1, "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" (1993).
  4. KS C IEC 60227-2, "Polyvinyl Chloride Insulated Cables of Rated Voltages up to and Including 450/750 V - Part 2:Test Methods" (2003).
  5. KS C IEC 60227-3, "Polyvinyl Chloride Insulated Cables of Rated Voltages up to and Including 450/750 V - Part 3:Non-sheathed Cables for Fixed Wiring" (2005).
  6. https://www.scienceall.com/폴리염화비닐polyvinylchloride/ (2015).
  7. https://www.scienceall.com/가교고분자-cross-linkingpolymer-架橋高分子/ (2017).
  8. Korea Water Resources Corporation, K-water, "mywater water Encyclopedia Aluminum Hydroxide" (2016).
  9. http://blog.naver.com/ad1628/220841402193 (2016).
  10. KS C IEC 60811-1-3, "Common Test Methods for Insulating and Sheathing Materials of Electric and Optical Cables - Part 1-3: General Application -Methods for Determining the Density - Water Absorption Tests - Shrinkage Test" (2002).
  11. http://pdf.electimes.com/201707/24_3318_11.pdf (2017).
  12. https://blog.naver.com/hhs4040/221421332116 (2018).