To increase harmonic impedance and subsequently reduce harmonic emissions. This was a regulatory requirement for heat pump systems to be considered under the lower harmonic planning level requirement.
Keen to deliver a comprehensive solution, our engineers performed a courtesy pre-compliance check of the conducted emissions and found the system did not meet these requirements due to a new wiring layout within the terminal enclosure.
Our engineers considered our established range of products and recommended an off-the-shelf appliance filter to reduce the conducted emissions. The filter was successfully installed inside the equipment, together with a line reactor to reduce the impedance levels. Further testing was then undertaken which confirmed a pass for the emissions levels, and the client was provided with a comprehensive pre-compliance test report as evidence of conformance.
A competitive advantage was gained for the client due to the equipment achieving a lower harmonic emissions limit. With the additional testing, a previously unknown conducted emissions issue was also resolved with a Roxburgh EMC filter. Overall, the client’s product now meets relevant UK regulations, and they are in possession of a test report for inclusion within their technical file.
