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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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    Separated or floating source for Class II or equivalent isn't really a bad thing. Issue being that not all appliances are fully Class II ... and floating supplies are not really suitable for multiple Class I products, or the type of products that have protective conductor currents as well as Class II approach.

    Not all inverters lack separation between input and output, though - some have  isolation between each of DC input, AC input, DC output and AC output, RCDs built in at the AC output, output neutral connected to a protective conductor so the RCD works and can be connected to the vehicle or unit chassis, or a separate earth electrode or, if in a building, the MET ... so they are ready-to-go for installation (via suitable connectors) in caravans, motor homes, mobile/transportable units, and workshops.  This manufacturer is an example: https://www.claytonpower.com/

    You get what you pay for.

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  • 0

    Separated or floating source for Class II or equivalent isn't really a bad thing. Issue being that not all appliances are fully Class II ... and floating supplies are not really suitable for multiple Class I products, or the type of products that have protective conductor currents as well as Class II approach.

    Not all inverters lack separation between input and output, though - some have  isolation between each of DC input, AC input, DC output and AC output, RCDs built in at the AC output, output neutral connected to a protective conductor so the RCD works and can be connected to the vehicle or unit chassis, or a separate earth electrode or, if in a building, the MET ... so they are ready-to-go for installation (via suitable connectors) in caravans, motor homes, mobile/transportable units, and workshops.  This manufacturer is an example: https://www.claytonpower.com/

    You get what you pay for.

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