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Nowadays, so called plug in hybrid as well as fully electric vehicles are catching more and more attraction triggered by the reduction of pollution as it is normally happening with pure combustion engine. Nevertheless, there is at least one feature that is common to all of them electric energy is accumulated in dedicated battery pack and it is used in electric motors afterwards. Although this technology still undergoes heavy development nowadays, so do also relevant technical standards, it is clear that charging energy is provided utilizing existing mains infrastructure. Hand in hand, it implies certain requirements put on charger..

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