China 'GB/T 22709-2008
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 22709-2008
Residual strength of string insulator units of glass or ceramic material for overhead lines after mechanical damage of the dielectric 架空线路玻璃或瓷绝缘子串元件绝缘体机械破损后的残余强度
Issued Date:2008-12-30
Implemented Date:2009-10-01
Issued by:
The Standardization Administration of the People's Republic of China