凌智敏（悉地国际设计顾问（深圳）有限公司，广东省深圳市 518057）

Electrical Design of Electric Shock Protection for Low - voltage Distribution System

LING Zhimin（CCDI Group，Shenzhen 518057，Guangdong Province，China）

    Abstract：The electrical design of electric shock protection for low-voltage distribution system is a very important part of safety protection for low-voltage distribution system. Learning the basic theory of electric shock protection，studying and understanding deeply the connotation of grounding mode of low-voltage distribution system and corresponding electric shock protection conditions，and applying the additional measures in the measures for electric shock protection by automatic power cut-off are of great benefits to the electrical design. This paper makes an in-depth discussion on these issues.

    Key words：safety protection；electric shock protection；direct contact protection（basic protection）；indirect contact protection（fault protection）；current effect of human body；measures for electric shock protection by automatic power cut-off；equipotential bonding against electric shock；residual current protection device

  摘 要：低压配电系统电击防护的电气设计是低压配电系统安全防护极为重要的部分。学习电击防护的基础理论、深入学习理解低压配电系统接地方式的内涵及相应防电击条件，以及运用好自动切断电源电击防护措施中的附加措施对电气设计大有裨益，本文对这些问题进行深入探讨。

  关键词：安全防护；电击防护；直接接触防护（基本防护）；间接接触防护（故障防护）；人体的电流效应；自动切断电源防电击措施；防电击等电位联结；剩余电流保护装置

     中图分类号：TU856                文献标识码：A

      doi：10. 3969 / j. issn. 1003 - 8493. 2019. 10. 001