DIN EN 61850-7-1 : 2022 Title: Communication networks and systems for power utility automation - Part 7-1: Basic communication structure - Principles and models (IEC 61850-7-1:2011 + A1:2020); English version EN 61850-7-1:2011 + A1:2020 Year: 2022 Publisher: DIN Media GmbH Availability: Within 1-2 working days