Danfoss VLT Frequency Converter and CELabellingCE labelling is a positive feature when used for its original purpose, i.e. to facilitate trade within the EUand EFTA.However, CE labelling may cover many different specifications. Thus, you have to check what a given CElabel specifically covers.The covered specifications can be very different and a CE label may therefore give the installer a falsefeeling of security when using a frequency converter as a component in a system or an appliance.Danfoss CE labels the frequency converters in accordance with the low-voltage directive. This means thatif the frequency converter is installed correctly, we guarantee compliance with the low-voltage directive.Danfoss issues a declaration of conformity that confirms our CE labelling in accordance with the low-voltage directive.The CE label also applies to the EMC directive provided that the instructions for EMC-correct installationand filtering are followed. On this basis, a declaration of conformity in accordance with the EMC directiveis issued.The Design Guide offers detailed instructions for installation to ensure EMC-correct installation. Further-more, Danfoss specifies which our different products comply with.Danfoss gladly provides other types of assistance that can help you obtain the best EMC result.Compliance with EMC Directive 89/336/EECAs mentioned, the frequency converter is mostly used by professionals of the trade as a complex com-ponent forming part of a larger appliance, system, or installation. It must be noted that the responsibilityfor the final EMC properties of the appliance, system or installation rests with the installer. As an aid tothe installer, Danfoss has prepared EMC installation guidelines for the Power Drive system. The standardsand test levels stated for Power Drive systems are complied with, provided that the EMC-correct instruc-tions for installation are followed, see section Electrical Installation.Air HumidityThe frequency converter has been designed to meet the IEC/EN 60068-2-3 standard, EN 50178 pkt.9.4.2.2 at 50∞C.Aggressive EnvironmentsA frequency converter contains a large number of mechanical and electronic components. All are to someextent vulnerable to environmental effects.The frequency converter should not be installed in environments with airborne liquids, parti-cles, or gases capable of affecting and damaging the electronic components. Failure to takethe necessary protective measures increases the risk of stoppages, thus reducing the life ofthe frequency converter.Liquids can be carried through the air and condense in the frequency converter and may cause corrosionof components and metal parts. Steam, oil, and salt water may cause corrosion of components and metalparts. In such environments, use equipment with enclosure rating IP 55. As an extra protection , coatedprintet circuit boads can be orded as an option.Airborne Particles such as dust may cause mechanical, electrical, or thermal failure in the frequency con-verter. A typical indicator of excessive levels of airborne particles is dust particles around the frequencyconverter fan. In very dusty environments, use equipment with enclosure rating IP 55 or a cabinet for IP00/IP 20/TYPE 1 equipment.FC 300 Design GuideIntroduction to FC 300MG.33.B7.02 - VLT is a registered Danfoss trademark 15