龚广明 肖   遥 龚志伟（中信建筑设计研究总院有限公司，武汉市 430014）

Discussion on Common Issues in the Electrical Design of Multi‑split Air‑conditioning System

GONG Guangming XIAO Yao GONG Zhiwei

（CITIC General Institute of Architectural Design and Research Co.,Ltd.,Wuhan 430014，China）

Abstract：To address the frequently encountered issues in the electrical design of multi‑split air‑conditioning system,this system is examined from the aspects including outdoor unit distribution power,whether circuit breaker needs RCD,circuit breaker capacity reduction,cable laying,current‑carrying capacity correction,indoor unit power distribution method and control,and proper comments and suggestions are offered herein.

Key words：multi‑split air‑conditioning system;outdoor unit;indoor unit;electrical design;rated input power;maximum input power;residual current protective device;circuit breaker capacity reduction

摘　要：针对多联机空调系统电气设计中的一些常见问题，从室外机配电功率,断路器是否需要设置RCD，断路器降容,电缆敷设及载流量修正和室内机配电方式、控制等方面进行探讨，并给出相应的意见及建议。

关键词：多联机空调系统；室外机；室内机；电气设计；额定输入功率；最大输入功率；剩余电流保护装置；断路器降容

中图分类号：TU83                   　  文献标识码：A

doi：10.3969 / j. issn.1003 － 8493.2024.02.006