In terms of harmonic data, the single-phase zappi is an AC charger and as such does not produce sufficient harmonics to measure.
The standard covering harmonic current emissions for loads <16A is IEC EN 61000-3-2. As the product itself only consumes a small proportion of its rated capacity, <75W, then this is excluded from the scope of this standard.
If you are being asked for this information by UK Power Networks, you might wish to inform them of this, as they may potentially think that the charger itself contains DC conversion, which if it did then harmonic current measurements would be applicable.
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