KS C IEC 60721-3-7:2017 Classification of environmental conditions-Part 3 : Classification of groups of environmental parameters and their severities. Section 7 : Portable and non-stationary use
2022KS C IEC 60721-3-7:2022 Classification of environmental conditions —Part 3-7: Classification of groups of environmental parameters and their severities — Portable and non-stationary use
2017KS C IEC 60721-3-7:2017 Classification of environmental conditions-Part 3 : Classification of groups of environmental parameters and their severities. Section 7 : Portable and non-stationary use