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EV CHARGING EQUIPMENT

John Peckham
I am hearing from my network of contractors, that have actually read the new 722, that they have been asking charging equipment manufactures for documentary proof to comply with Note 5 of 722.411.4.


They are getting knocked back for asking or in one case a Declaration that says the particular device complies with BS 7671. I think that is wrong to declare that as BS 7671 is an installation safety standard and not a product standard. I believe that as a minimum the equipment must comply with the Low Voltage Directive and be CE marked. I also believe that manufacturers have to issue a Declaration of Conformity. 


BS 7671 722 has numerous references to the various standards required such as BS EN 61851 that the equipment must comply with. I am thinking it may be illegal to offer the sale of equipment that does not comply with the Low Voltage Directive and is not CE marked?


I am hoping the countries top man of equipment safety standards, Paul Skyrme , sees this post and will come on and give us his expert view?


Has any forum member asked for a Declaration of Conformity from EV charging equipment manufacturers and received one?
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    AJJewsbury:


    So not connecting the charge point's c.p.c. to true Earth might not be a good idea?


    higher frequencies used for comms and power conversion equipment can cause static charging, so earthing, or a controlled earth path, is a very good idea - that's why it's in the Ethernet standard for connecting equipment, for example (the controlled discharge path).



    Then connecting it to a separated live conductor, floating from Earth - as per Fig A722 in AMD1:2020 - might not be exactly reassuring,





    Agreed - but you shouldn't find PME at a filling station - and Mode 4 still requires an earth connection even for separated systems.

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  • 0

    AJJewsbury:


    So not connecting the charge point's c.p.c. to true Earth might not be a good idea?


    higher frequencies used for comms and power conversion equipment can cause static charging, so earthing, or a controlled earth path, is a very good idea - that's why it's in the Ethernet standard for connecting equipment, for example (the controlled discharge path).



    Then connecting it to a separated live conductor, floating from Earth - as per Fig A722 in AMD1:2020 - might not be exactly reassuring,





    Agreed - but you shouldn't find PME at a filling station - and Mode 4 still requires an earth connection even for separated systems.

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