DIN EN 60027-1:2007 Letter symbols to be used in electrical technology - Part 1: General (IEC 60027-1:1995 (Reprint) + A1:1997 + A2:2005); German version EN 60027-1:2006 + A2:2007
DIN EN 60027-2:2007 Letter symbols to be used in electrical technology - Part 2: Telecommunications and electronics (IEC 60027-2:2005); German version EN 60027-2:2007
DIN EN 60027-3:2007 Letter symbols to be used in electrical technology - Part 3: Logarithmic and related quantities, and their units (IEC 60027-3:2002); German version EN 60027-3:2007
DIN EN 60027-4:2008 Letter symbols to be used in electric technology - Part 4: Rotating electric machines (IEC 60027-4:2006); German version EN 60027-4:2007
DIN EN 60027-6:2008 Letter symbols to be used in electrical technology - Part 6: Control technology (IEC 60027-6:2006); German version EN 60027-6:2007
DIN EN 60027-7:2011 Letter symbols to be used in electrical technology - Part 7: Power generation, transmission and distribution (IEC 60027-7:2010); German version EN 60027-7:2010
DIN EN ISO 50001:2011 Energy management systems - Requirements with guidance for use (ISO 50001:2011); German version EN ISO 50001:2011
DIN EN ISO/IEC 17021-1:2015 Conformity assessment - Requirements for bodies providing audit and certification of management systems - Part 1: Requirements (ISO/IEC 17021-1:2015); German and English version EN ISO/IEC 17021-1:2015
IEC 60027-1:1992 Letter symbols to be used in electrical technology; part 1: general
IEC 60027-2:2005 Letter symbols to be used in electrical technology - Part 2: Telecommunications and electronics
IEC 60027-3:2002 Letter symbols to be used in electrical technology - Part 3: Logarithmic and related quantities, and their units
IEC 60027-4:2006 Letter symbols to be used in electrical technology - Part 4: Rotating electric machines
IEC 60027-6:2006 Letter symbols to be used in electrical technology - Part 6: Control technology
IEC 60027-7:2010 Letter symbols to be used in electrical technology - Part 7: Power generation, transmission and distribution
ISO 50001:2011 Energy management systems - Requirements with guidance for use
ISO 50002:2014 Energy audits - Requirements with guidance for use
ISO 50004:2014 Energy management systems - Guidance for the implementation, maintenance and improvement of an energy management system
ISO 50006:2014 Energy management systems - Measuring energy performance using energy baselines (EnB) and energy performance indicators (EnPI) - General principles and guidance
ISO 50015:2014 Energy management systems - Measurement and verification of energy performance of organizations - General principles and guidance
ISO/IEC 17021:2011 Conformity assessment - Requirements for bodies providing audit and certification of management systems
ISO/IEC TS 17022:2012 Conformity assessment - Requirements and recommendations for content of a third-party audit report on management systems
ISO/IEC TS 17023:2013 Conformity assessment.Guidelines for determining the duration of management system certification audits
2016DIN ISO 50003:2016 Energy management systems - Requirements for bodies providing audit and certification of energy management systems (ISO 50003:2014)