Abstract

본 연구에서는 공동지하구의 밀폐된 환경에서 사용되고 있는 전력용 케이블(CV-Cable)의 연소패턴을 예측하기 위하여 경년열화(29년, 14년, 10년 사용)된 케이블의 외피를 준비하여 열적특성 및 난연특성을 비교 분석하였다. 발연특성 및 난연특성 분석을 위한 실험은 ISO 5659(연기밀도), UL 94(난연성), NES 713(독성가스) 등의 규격에 의하였다. 연구결과, 총연기방출량은 29년 경년은 <TEX>$3554(m^2/m^2)$</TEX>, 14년 경년은 <TEX>$2735(m^2/m^2)$</TEX>, 10년 경년은 <TEX>$2342(m^2/m^2)$</TEX>로 나타나 사용연수가 길수록 총연기방출량은 증가하는 경향을 보였다. 또한, 최대연기밀도는 경년별 924Dm으로 동일하였으나 난연케이블의 연기밀도 성능 기준인 150Dm 이하 보다 6.16배 높은 것으로 나타났다. 독성지수는 29년 경년의 경우 2.7, 14년 경년은 1.7, 10년 경년은 0.6으로 나타나 29년 경년 케이블은 10년 경년 케이블 보다 독성지수가 4배 이상의 높은 것을 알 수 있었다. In this study, outer cover of temperature aging(used for 29 years, 14 years, 10 years) cables were prepared for comparative thermal characteristics and retardant characteristics to predict combustive pattern of power cables(CV-Cable) that are being used in sealed environment of common utility tunnel. ISO 5659(smoke density), UL 94(flame retardancy), and NES 713(toxic gas) standards were followed for tests for analysis of smoke generation characteristics and flame retardant characteristics. As result of research, total smoke release of 29 passed years, 14 passed years, and 10 passed years were shown a <TEX>$3554(m^2/m^2)$</TEX>, <TEX>$2735(m^2/m^2)$</TEX>, and <TEX>$2342(m^2/m^2)$</TEX>, respectively in which tendency of increasing total smoke release was shown as used years increased. Also, maximum smoke density was identical to 924Dm by passed years and was shown to be 6.16 times higher than the smoke density performance standard of flame retardant cables which is 150Dm or lower. Toxic index was shown to be 2.7, 1.7, and 0.6 for 29 passed years, 14 passed years, and 10 passed years, respectively in which 29 passed year cable showed more than 4 times higher toxic index that 10 passed year cable.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.