王 勇（中国建筑西南设计研究院有限公司，成都市 610042）

建筑电气设计几点思考（王勇）

Considerations on Electrical Design of Buildings

WANG Yong（China Southwest Architectural Design and Research Institute

Corp. Ltd.，Chengdu 610042，China）

    Abstract：In view of the problems of neutral wire breakage in TN system，in this paper，a circuit breaker with neutral wire breakage protection function is suggested to improve the safety of power supply;the necessity of application of networked remote system of lightning surge protector in engineering is expounded;the reason and necessity of equipping backup protector for neutral lines are analyzed;residual current operated circuit breaker to be equipped for circuit of wall‑mounted separate air conditioner for first‑floor residence along streets are suggested.

    Key words：electrical design;break protection circuit breaker of neutral wire;power supply security;networked remote lightning surge protector;backup protector;air‑conditioning circuit;residual current operated circuit breaker;electric shock risk

  摘　要：针对TN系统中性线断线时出现的问题，提出采用带中性线断线保护功能的断路器来提高供电安全性；阐述雷电浪涌保护器联网远传型系统在工程应用的必要性;分析中性线配置后备保护器的原因和必要性;提出临街一层住宅壁挂式分体空调回路需要配置剩余电流动作保护器。

关键词：电气设计；中性线断线保护断路器；供电安全；联网远传型雷电浪涌保护器；后备保护器；空调回路；剩余电流动作保护器；电击风险

  中图分类号：TU201　　　　  　文献标识码：A

    doi：10.3969 / j. issn.1003 － 8493.2020.09.012