BS EN IEC 61851-21-2:2021

What is BS EN IEC 61851‑21‑2 about?  

BS EN IEC 61851‑21‑2 is part 21-2 of the multi-series standard that defines the EMC requirements for any off-board components or equipment of such systems used to supply or charge electric vehicles with electric power by conductive power transfer (CPT), with a rated input voltage, according to IEC 60038:2009, up 1 000 V AC or 1 500 V DC and an output voltage up to 1 000 V AC or 1 500 V DC. 

BS EN IEC 61851‑21‑2 covers off-board charging equipment for mode 1, mode 2, mode 3 and mode 4 charging as defined in IEC 61851-1:2017. 

Cables, where there is no electronics or no electric/electronic switching, are considered as passive (benign) and are deemed to comply with the emission and immunity requirements of BS EN IEC 61851‑21‑2 without any need for testing. 

NOTE-  

BS EN IEC 61851‑21‑2 does not apply to any onboard components or equipment of charging or power supply system’s being part of the vehicles. The EMC requirements for such equipment are covered by IEC 61851-21-1: 2017. 

Who is BS EN IEC 61851‑21‑2 for? 

BS EN IEC 61851‑21‑2 on EMC requirements for off-board electric vehicle charging systems is applicable to: 

• Electric vehicle manufacturers  
• Electric vehicle charger manufacturers 
• Electric vehicle charging stations 
• Vehicle regulatory authorities  

Why should you use BS EN IEC 61851‑21‑2?  

Electric vehicles are becoming more popular. The charging systems of these vehicles need to be EMC compatible. BS EN IEC 61851‑21‑2 defines the EMC requirements for any off-board components or equipment of such systems used to supply or charge electric vehicles with electric power by conductive power transfer. These requirements will help you to check the EMC compatibility of the off-board electric vehicle charging systems. 

BS EN IEC 61851‑21‑2 has been prepared to take into account the normal EMC environments for all types of EUTs. BS EN IEC 61851‑21‑2 covers all residential, commercial, light and industrial environments irrespective of whether the equipment is located indoor or outdoor. Thus, helping you manufacture equipment for all types of environments. 

Large magnetic fields are generated by charging systems in close proximity to other vehicles. These fields can interfere with the working of the keyless entry system. BS EN IEC 61851‑21‑2 gives test to simulate the effects of the radiated magnetic fields on a keyless entry system for a vehicle.  

What’s changed since the last update?  

BS EN IEC 61851‑21‑2:2021 edition, together with IEC 61851-21-1, cancels and replaces IEC 61851-21:2001. It constitutes a technical revision. 

BS EN IEC 61851‑21‑2:2021 includes the following significant technical changes with respect to IEC 61851-21:2001: 

• This document addresses now only EMC related tests instead of other electrical tests 
• Clauses 2 and 3 have been updated 
• The port definition, the test-setups and their corresponding limits, as well as the operation modes, are defined more precisely 
• Annexes A to F have been added