IEC 62439-3 Ed. 4.0 b:2021

Industrial communication networks – High availability automation networks – Part 3: Parallel Redundancy Protocol (PRP) and High-availability Seamless Redundancy (HSR)
standard by International Electrotechnical Commission, 12/01/2021

IEC 61937-11 Ed. 2.0 en:2021

Digital audio – Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 – Part 11: MPEG-4 AAC and its extensions in LATM/LOAS
standard by International Electrotechnical Commission, 07/01/2021

IEC 62999 Ed. 1.1 b:2021

Electric room heating – Underfloor heating – Performance characteristics – Definitions, method of testing, sizing and formula symbols CONSOLIDATED EDITION
standard by International Electrotechnical Commission, 10/01/2021

IEC 60519-4 Ed. 5.0 b:2021

Safety in installations for electroheating and electromagnetic processing – Part 4: Particular requirements for arc furnace installations
standard by International Electrotechnical Commission, 12/01/2021

IEC 62271-213 Ed. 1.0 b:2021

High-voltage switchgear and controlgear – Part 213: Voltage detecting and indicating system
standard by International Electrotechnical Commission, 06/01/2021

IEC 61850-7-420 Ed. 2.0 b:2021

Communication networks and systems for power utility automation – Part 7-420: Basic communication structure – Distributed energy resources logical nodes
standard by International Electrotechnical Commission, 10/01/2021

IEC 62563-1 Ed. 1.2 b:2021

Medical electrical equipment – Medical image display systems – Part 1: Evaluation methods CONSOLIDATED EDITION
standard by International Electrotechnical Commission, 07/01/2021