NA 022
DKE German Commission for Electrical, Electronic & Information Technologies of DIN and VDE
Technical rule
[CURRENT]
DVGW W 633
DVGW W 633
High-Voltage and Low-Voltage Equipment in Water Supply Systems - Transformers
Title (German)
Hochspannungs- und Niederspannungsanlagen in Wasserversorgungsanlagen - Transformatoren