This standard applies to general-purpose electrical products in tropical areas classified according to GB/T 4797.1. This standard specifies the environmental conditions and severity levels encountered during storage, transportation, and use conditions in my country's six outdoor climate types in tropical areas (including humid tropics, subhumid tropics, and dry tropics), and serves as a reference when formulating relevant product standards.
JB/T 4160-1999 history
2013JB/T 4160-2013 Natural environmental conditions appearring in the tropics for electric products
1999JB/T 4160-1999 Natural environmental conditions appearing in the tropics for electric products