Photovoltaic devices - Part 6: Requirements for reference solar modules - Amendment 1 (IEC 82/183/FDIS:1997); German version EN 60904-6:1994/prA1:1997

Amendment 3 to IEC 60099-4, f2, Ed.1 - Part 4: Metal-oxide surge arresters without gaps for a.c. systems - EMC Considerations

Fixed installations for railway applications - Electrical safety, earthing and the return circuit - Part 3: Mutual Interaction of AC and DC traction systems

Fixed installations for railway applications - Electrical safety, earthing and the return circuit - Part 2: Provisions against the effects of stray currents caused by DC traction systems

Fixed installations for railway applications - Electrical safety, earthing and the return circuit - Part 1: Protective provisions against electric shock

Medical electrical equipment - Part 2-33: Particular requirements for the basic safety and essential performance of magnetic resonance equipment for medical diagnosis (IEC 62B/1247/CDV:2021); German and English version prEN IEC 60601-2-33:2021

Gas-fired heating boilers - Part 1: General requirements and tests

Generic smart grid requirements - Part 2-3: Resources connected to the grid domains (IEC SRD 62913-2-2:2019)

Gas-fired central heating boilers - Part 2-1: Specific standard for type C appliances and type B2, B3 and B5 appliances of a nominal heat input not exceeding 1 000 kW