KS C IEC 60621-2:2014 Electrical installations for outdoor sites under heavy conditions (including open-cast mines and quarries)-Part 2:General protection requirements
2014KS C IEC 60621-2:2014 Electrical installations for outdoor sites under heavy conditions (including open-cast mines and quarries)-Part 2:General protection requirements
0000 KS C IEC 60621-2-2005(2010)
2005KS C IEC 60621-2:2005 Electrical installations for outdoor sites under heavy conditions (including open-cast mines and quarries)-Part 2:General protection requirements