The Acer Range is compliant to EN61000 for harmonics – Clade will supply details from the inverter OEM to provide as evidence. The EN61000 compliance question on the DNO application can be ticked.
Anything above 100A is outside of the standard and will require a stage 2 assessment by the DNO in any case. We have a number of reports for the Oak units [link to attached on website] to show the effects of the grid and application of the units in relation to Flicker and Harmonics. Please note: the DNO will have to undertake this assessment as the specific of the site grid stability is the driving factor, not the heat pump.
If there is a constraint regarding harmonic content on a site then we can provide harmonic filtering to support an install, at additional cost.