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Portable battery powered AC power banks are they a danger

Gary Brown

Hi , hoping for someone to shed light on a topic regards the trend of battery bank AC supplies from the likes of Anker or Jackery 

my concerns are these devices get their own classification such as double insulated , class b for their own function which is to be charged from the 230AC socket ... fine if their out put is ELV

however they have multiple 230VAC sockets on them allowing 1500W +

BS7671 sec 551 requires generating units (of electrochemical accumulators ) to feature an RCD on final circuits. 100% of these power banks do not have an RCD , favouring separated voltage and electronics ( not SELV ) , however this is over the 110AC limit BS7671 allows for ....

my question is how are these units able to meet regulations and gain CE marking and ultimately be safe 

they are essentially able to pile 6 Amps at 230V with only overload to protect you which personally is a little more than the 30mA we are so dearly bound to 

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    Aren't they IT supplies

    I'd say no - just separated. The point being that exposed-conductive-parts are left floating rather than being specifically connected to Earth (there's not T to make it IT). BS 7671 won't be in scope, but if it was it'd be covered by sections 413 (for a single appliance) for 418.3 (for multiple appliances) - and then there'd be no 30mA RCD requirement at all.

       - Andy.

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  • 0

    Aren't they IT supplies

    I'd say no - just separated. The point being that exposed-conductive-parts are left floating rather than being specifically connected to Earth (there's not T to make it IT). BS 7671 won't be in scope, but if it was it'd be covered by sections 413 (for a single appliance) for 418.3 (for multiple appliances) - and then there'd be no 30mA RCD requirement at all.

       - Andy.

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