Electric Engineers Magazine (전기기술인)

Korea Electric Engineers Association (한국전기기술인협회)
권호 표지

Problems and Inprovement Method of Grounding System in Electrical Facilities

건축전기설비에 적용되는 접지시스템 문제점과 개선방안

  • Chung, Young-Ki (Soongsil Univ.) ;
  • Kwak, Hee-Ro (Soongsil Univ.) ;
  • Shin, Hyo-Sub (Hanyang TEC.) ;
  • Chung, Chun-Byoung (Shinhan Co.) ;
  • Nam, Taik-Joo (KAPS Ministry of Commerce Industry and Energy)
  • 정용기 (숭실대학교) ;
  • 곽희로 (숭실대학교) ;
  • 신효섭 (㈜한양) ;
  • 정춘병 (㈜신한) ;
  • 남택주 (산업자원부 기술표준원)
  • Published : 2001.08.01
Download PDF
⟨ Previous Next ⟩

Abstract

Presently the Korean grounding system uses TN system, multi-grounding method with IT independent grounding method. Nevertheless TN system can't exist with TT system in the technological terms. If they coexist, it causes ground-fault circuit not to operate, and brings about different electrical potential rise by customer system. It brings about serious problems for safety. This paper aims for improving method of grounding system based on the technical analysis on instances in foreign countries and Korea. Almost standards and construction manner were apt to be internationalized after WTO/TBT agreement was concluded. The internal grounding systems should meet the international criteria and reliability for safety, and be provided with technologically impeccable standards.

전기설비 분야에서는 사용하는 전압규격과 사용방식, 접지 System이 어떻게 조화를 이루냐에 따라 안전에 대한 확보여부가 결정된다. 지락 사고시 지락전류는 일정한 어느 한 부분으로만 흐르는 것이 아니라 접지저항의 상황에 따라 분류한다. 이러한 이유로 접지사항이 낮으면 안전하고 높으면 위험하다는 일반적인 잘못된 생각이 사고를 크게 확대시킬 수 있다.

Keywords