NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
Project
Central safety power supply systems
Abstract
This document specifies the general requirements for central power supply systems for an independent energy supply to essential safety equipment. This document covers systems that are permanently connected to AC supply voltages not exceeding 1 000 V and use batteries as an alternative power source. Changes are being made to the Scope and Normative references. Terms and definitions are being added. Further changes are being made to several subsections of Section 6, ‘Design´.
Begin
2026-06-19
Planned document number
DIN EN 50171/A1
Project number
02233972
