Our team analysed an existing device which already met EU emission limits, to advise on the modifications required to meet US emission limits, as regulated by the Federal Communications Commission. The first challenge lay in selecting a filter which was suitable for the measured inrush and required leakage for pluggable equipment. The second, it must be suitable for working at the high ambient temperatures within the device where space was also at a premium.
The first step was to undertake pre-compliance testing of the industrial vacuum at our on-site laboratory. A Roxburgh EMC appliance filter was selected as a good fit for the footprint requirements and engineers then re-routed the wiring of the filter to maximise its performance and meet US regulations. Inrush and leakage were measured across a range of operating conditions and the unit was then tested for an extended period with temperature monitoring to ensure compliance.
The client was able to take their product to the US market after the filter addition which decreased the device’s emissions. The re-routing of the wiring meant design changes were minimised, saving the client valuable time and resources. The filter also reduced inrush, achieved leakage current limits for pluggable equipment, and operated within stated temperature limits without loss of performance.
