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1.事故现场情况 1991年6月30日下午2时许,上海某居民新村住户顺某在家中洗刷浴缸时,因碰触了自来水管而倒下,当场不幸死亡。经诊断为触电死亡。现场勘查,该栋楼房的民用供电系统系采用中性点直接接地的380/220V三相四线低压供电的接地保护系统(即TT系统)。触电者家中的电气线路采用暗管敷设,有专用接地线和接地体作为接地保护装置。整个电气线路与明敷的自来水管无任何连接。其家中浴室内的水管被引出,
1. Accident scene On June 30, 1991, at 2 pm on June 30, 1991, a resident of a certain village in Shanghai Shun was washed away by a water pipe when she was washing a bathtub at home. Unfortunately, she was killed on the spot. After being diagnosed as electric shock death. Site survey, the building’s civil power supply system is the use of neutral point directly grounded 380 / 220V three-phase four-wire low-voltage power supply ground protection system (ie TT system). The electric circuit in the home of the electric shock taker is laid by the underground pipe, there is a special grounding wire and the grounding body as the grounding protection device. There is no connection between the whole electrical circuit and the water pipe of Mingfu. The water pipes in their home bathroom were led out,