Announcement of Ministry of Housing and Urban-Rural Development of the People's Republic of China

No.437

Announcement on Issuing the National Standard of"Code for Design Electric Power Supply Systems"

The"Code for Design Electric Power Supply Systems"is hereby approved as a Chinese national standard bearing a serial number of GB 50052-2009，and will come into effect as of July 1，2010.Articles 3.0.1，3.0.2，3.0.3，3.0.9 and 4.0.2 are compulsory provisions and must be enforced strictly.The former edition GB 50052-95"Code for Design Electric Power Supply Systems"is abolished as of the same date.

This code will be published and distributed by the China Planning Press as entrusted by the Research Institute of Standards and Norms of the Ministry of Housing and Urban-Rural Development of the People's Republic of China.

Ministry of Housing and Urban-Rural Development of the People's Republic of China

November 11，2009