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DIN EN IEC 60079-7/A1*VDE 0170-6/A1Explosive atmospheres - Part 7: Equipment protection by increased safety "e" (IEC 60079-7:2015/A1:2017); German version EN IEC 60079-7:2015/A1:2018 Explosive atmospheres - Part 7: Equipment protection by increased safety "e" (IEC 60079-7:2015/A1:2017); German version EN IEC 60079-7:2015/A1:2018 |