NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
Technical rule
[CURRENT]
DVGW W 635
DVGW W 635
High-Voltage and Low-Voltage Equipment in Water Supply Systems; Substitute Power Supply Systems with Power Generators, Battery Installations, uninterruptable Power Supply Systems
Title (German)
Hochspannungs- und Niederspannungsanlagen in Wasserversorgungsanlagen; Ersatzstromversorgungsanlagen mit Stromerzeugungsaggregaten, Batterieanlagen, unterbrechungsfreie Stromversorgungsanlagen