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| UL1647标准,给同行们参考. 1 Scope
 1.1Theserequirementscovermotor-operatedmassageandexercisemachines,suchasvibrators,
 exercisebicycles,vibratingandmassagingchairs,andthelike,aretobeemployedinaccordancewith
 theNationalElectricalCode,NFPA70.
 1.2Theserequirementsalsocovermassageandexercisemachinessuchasvibratorsinwhichmotionof
 anoperatingpartisproducedbyelectricalmeans.
 1.3Theserequirementsdonotcoverappliancesratedmorethan250volts.
 1.4Aproductthatcontainsfeatures,characteristics,components,materials,orsystemsnewordifferent
 fromthosecoveredbytherequirementsinthisstandard,andthatinvolvesariskoffireorofelectricshock
 orinjurytopersonsshallbeevaluatedusingappropriateadditionalcomponentandend-product
 requirementstomaintainthelevelofsafetyasoriginallyanticipatedbytheintentofthisstandard.A
 productwhosefeatures,characteristics,components,materials,orsystemsconflictwithspecific
 requirementsorprovisionsofthisstandarddoesnotcomplywiththisstandard.Revisionofrequirements
 shallbeproposedandadoptedinconformancewiththemethodsemployedfordevelopment,revision,and
 implementationofthisstandard.
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