主管:中华人民共和国应急管理部
主办:应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU

Fire Science and Technology ›› 2020, Vol. 39 ›› Issue (11): 1606-1608.

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Analysis of surface composition of copper wire ground short circuit weld mark

WANG Liang1, ZHANG Wen-tao2   

  1. 1. Gansu Fire and Rescue Brigade, Gansu Lanzhou 730070, China; 2. Linxia Fire and Rescue Division, Gansu Linxia 731800, China
  • Online:2020-11-15 Published:2020-11-15

Abstract: Experiments were carried out to simulate the ground short circuit of single core PVC copper conductor. The changes of ground short circuit weld mark surface composition of copper wire along with the electric current increasing before and during the fire were recorded and analyzed. By linear regression analysis, the factors affecting the element content of copper wire weld mark surface was discussed. The study can provide scientific guide for fire investigation.

Key words: copper wire, ground short circuit, surface composition