Relevant standards for
e-mobility

The standards that apply today have different areas of focus, but enable permanent and comprehensive protection solutions in their holistic application. The IEC 60364 standards are installation standards and must therefore always be applied to fixed installations. If the charging post is non-portable and connected via fixed cabling, it falls under the scope of IEC 60364. 

E-mobility Wall boxes AC/DC charging stations High-power charging Lorry and bus charging stations Smart power grids Battery storage system
Electric vehicle charging station with a red charging cable connected to a dark gray car.

When you need surge protection:

The standard IEC 60364-4-44, section -443 states WHEN surge protection must be installed. For example, if surges can affect public facilities, commercial and industrial activities and if sensitive equipment of overvoltage category I + II is installed.

Selecting and installing the right protection:

The required surge protection equipment is chosen based on IEC 60364-5-54, section -534; i.e. WHICH surge protection is to be chosen and WHERE it is to be installed.

Power supply for electric vehicles:

Requirements for special installations or locations: Since June 2019, the standard IEC 60364-7-722 mandates that surge protection must be factored in to publicly accessible connecting points during planning and set-up. The selection and installation of surge protective devices is still carried out in accordance with IEC 60364-4-44, section -443, and IEC 60364-5-54, section -534.

More standards within the context of
e-mobility

The lightning protection standard:

IEC 62305 

The lightning protection standard IEC 62305 must also be observed if:  

  • the charging infrastructure is installed at installations with an existing external lightning protection system.  
  • a general risk of a direct lightning strike is to be expected.  
  • the charging infrastructure or facilities are supplied by buildings that have an external lightning protection system. 

Basic standard for connecting customer installations to a low-voltage system:

VDE-AR-N 4100

For charging posts connected directly to a low-voltage system, VDE-AR-N 4100 (German standard) must also be taken into account. 

This standard describes, among other things, additional requirements of Type 1 arresters that are used in main power supply systems. 

DC power supply equipment for electric vehicles:

IEC 61851-23:2023 

IEC 61851-23:2023 describes the requirements for DC charging stations for supply voltages up to 1,500 V (direct current). New features must now be observed in section 12.7. on surge protection for lightning overvoltages and switching overvoltages. 

  • When and where should surge protection measures be provided? 
  • AC and DC input & communication lines 
  • Selection of surge protection: protection level & requirements regarding temporary overvoltages (TOV) 
  • Important: common earthing and equipotential bonding system 

DEHN Engineering Services

Use DEHN engineering know-how for your projects. From a risk analysis to the planning of external lightning protection, earthing and surge protection concepts.
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