IEC 81346-1:2022

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Industrial systems, installations and equipment and industrial products — Structuring principles and reference designations — Part 1: Basic rules.

IEC 81346-1:2022, an international standard jointly published by IEC and ISO, establishes general principles for structuring systems and provides rules for formulating unambiguous reference designations for objects in any technical system, focusing on industrial systems, installations, equipment, and industrial products.