电气设备的接地或接零,是防止触电事故保障人身安全的重要措施。《铁路工程技术规范》(以下简称《规范》)第九篇电力第9—125条规定:“电力网和电气设备的金属部分,由于绝缘损坏而可能带危险电压者,需要接地或接零”。按字面含义,《规范》中表明“需要接地或接零”,可以解释为既可以接地,也可以接零,《规范》的其他条文,亦未具体规定在哪些情况下应该接地,在哪些情况下应该接零。我们认为《规范》的有关措辞,似乎过于笼统和含混,容易引起概念的混乱。实际上,在设计工作中,特别是改建或扩建工程的设计中,如存在接地与接零相混淆的情况这是很有 The grounding or zeroing of electrical equipment is an important measure to protect people from accidents caused by electric shock. Article 9-125 of the “Technical Code for Railway Engineering” (hereinafter referred to as “the Code”) stipulates: “The metal parts of power grids and electrical equipment, which may carry hazardous voltage due to insulation damage, require grounding or zero connection”. According to the literal meaning, the “norm” states that “grounding or zeroing is needed” can be interpreted as either grounding or zeroing. The other provisions of the “norm” also do not specify under which conditions grounding should be performed. Should be connected to zero. We believe that the wording of the “Code” seems too general and vague, and it is easy to cause confusion in the concept. Actually, in the design work, especially in the design of remodeling or expansion projects, if there is confusion between grounding and zero-crossing, this is very