谈室外照明T  T系统应用

徐 华（清华大学建筑设计研究院有限公司，北京市 100084）

Discussion on the Application of TT System for Outdoor Lighting

XU Hua(Architectural Design & Research Institute of Tsinghua University

Co.,Ltd.,Beijing 100084，China)

Abstract：The selection of earth system for outdoor lighting is discussed,problems and solutions for common TT earthing system and non‑common TT earthing system for outdoor lighting are analyzed according to the protection requirements of national specifications and international standards for TT system,and schemes for outdoor lighting distribution and earthing are proposed,such as street lamps,lawn lamps and underground lamps.

Key words：outdoor lighting;TT system;street lamp;electrical safety;protection against electric shock;earth fault;common earth;non‑common earth

摘　要：论述室外照明接地系统的选择，依据国家规范和国际标准对T   T系统的保护要求，分析室外照明T    T系统共用接地和不共用接地出现的问题及应对措施，并提出路灯、草坪灯、埋地灯等室外照明配电和接地方案。

关键词：室外照明；T   T系统；路灯；电气安全；电击防护；接地故障；共用接地；不共用接地

中图分类号：TU852      　　  　  文献标识码：A

doi：10.3969 / j. issn.1003 － 8493.2022.08.001