VDE-AR-N 4222 Anwendungsregel:2020-07

Requirements for the underground laying of cables and protective tubes for electrical power supply, communications engineering and street lighting

VDE-AR-N 4221 Anwendungsregel:2016-05

Minimum requirements for executing companies in cable laying

DIN EN 50443 VDE 0845-8:2012-08

Effects of electromagnetic interference on pipelines caused by high voltage a.c. electric traction systems and/or high voltage a.c. power supply systems;

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