DIN EN 60079-25 VDE 0170-10-1 Berichtigung 1:2014-01

Corrigendum to DIN EN 60079-25 (VDE 0170-10-1):2011-06; German version EN 60079-25:2010/AC:2013

DIN EN 50394-1 VDE 0170-10-2:2004-09

Electrical apparatus for potentially explosive atmospheres - Group I: Intrinsically safe systems

Part 1: Construction and testing;