- -69Conformity to EC Directive / UL StandardEC DirectiveThe EC Directive is applied to all electronic products that provide proper functions and are exported toEU (European Union) for direct sales for general consumers. These products must conform to the EUuniformed safety standards, and the CE marking that indicates the conformity to the standards must beaffixed to the products.Inverters are handled as the components to be incorporated in machinery or equipment, not theabove-mentioned product that provides proper functions and are exported for direct sales for generalconsumers. Therefore, applying the CE marking to inverters is not compulsorily required.To facilitate the conformity of the machinery or equipment that incorporates inverters to the EC Directive,we attain conformity to the relevant standards of the Low Voltage Directive.Conformity to the EMC DirectiveRegarding our inverter systems, we define models (conditions) of their installation distance, wiring andso on for inverters and general-purpose motors, so that the models conform to the relevant standards ofthe EMC Directive. However, when an inverter system is actually incorporated in machinery orequipment, its wiring and grounding conditions may be different from the models. For this reason, themachinery or equipment in which the inverter and general-purpose motor are incorporated mustundergo the final examination to verify the conformity to the EMC Directive (particularly, in terms ofunnecessary radiation noise and noise terminal voltage).Applicable standardsObject Applicable standardsEN50178Conformity to LowVoltage Directiverelevant standardsEN55011 Radio Interference Wave Characteristics for Industrial,Scientific and Medical High-frequency EquipmentIEC61000-4-2 Electrostatic Discharge Immunity TestIEC61000-4-3 Radio Frequency Radiation Field Immunity TestIEC61000-4-4 Electrical High-speed Transient Phenomena /Burst Immunity TestIEC61000-4-5 Lightning Surge Immunity TestIEC61000-4-6 High-frequency Conduction Immunity TestInverterIEC61000-4-11 Instantaneous Power Failure Immunity TestConformity to EMCDirective relevantstandardsIEC: International Electrotechnical CommissionEN: Europaischen Normen= European standardsEMC: Electromagnetic Compatibility= Electromagnetic environmental compatibility