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UL964
STANDARDFORSAFETYElectricallyHeatedBedding
ONI7NWOd-NOISSIWa3dINOHLIMNOIINalaISIaxONOI1onaodd3dd3HL8N=XO=a3ZIAOHLNV1ON-7VI&3⊥VWa3⊥HOId人d007N
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ULStandardforSafetyforElectricallyHeatedBedding,UL964TwelfthEdition,DatedAugust31,2011
SummaryofTopics
ThisrevisionofUL964datedSeptember18,2020includesanewSupplementSAwith
requirementsthatcoverremotelyoperatedelectricallyheatedbedding,includingsmartenabled.
TextthathasbeenchangedinanymannerorimpactedbyUL'selectronicpublishingsystemismarkedwithaverticallineinthemargin.
ThenewrequirementsaresubstantiallyinaccordancewithProposal(s)onthissubjectdatedMarch27,
2020andJuly15,2020.
Allrightsreserved.Nopartofthispublicationmaybereproduced,storedinaretrievalsystem,ortransmittedinanyformbyanymeans,electronic,mechanicalphotocopying,recording,orotherwisewithoutpriorpermissionofUL.
ULprovidesthisStandard"asis"withoutwarrantyofanykind,eitherexpressedorimplied,includingbutnotlimitedto,theimpliedwarrantiesofmerchantabilityorfitnessforanypurpose.
InnoeventwillULbeliableforanyspecial,incidental,consequential,indirectorsimilardamagesincludinglossofprofits,lostsavings,lossofdata,oranyotherdamagesarisingoutoftheuseofortheinabilitytousethisStandard,evenifULoranauthorizedULrepresentativehasbeenadvisedofthepossibilityofsuchdamage.InnoeventshallUL'sliabilityforanydamageeverexceedthepricepaidforthisStandard,regardlessoftheformoftheclaim.
UsersoftheelectronicversionsofUL'sStandardsforSafetyagreetodefend,indemnify,andholdULharmlessfromandagainstanyloss,expense,liability,damage,claim,orjudgment(includingreasonableattorney'sfees)resultingfromanyerrorordeviationintroducedwhilepurchaserisstoringanelectronicStandardonthepurchaser'scomputersystem.
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ULCOPYRIGHTEDMATERIAL-NOTAUTHORIZEDFORFURTHER
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(TitlePageReprinted:September18,2020)
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UL964
StandardforElectricallyHeatedBedding
FirstEdition-May,1933
SecondEdition-June,1935
ThirdEdition-September,1942
FourthEdition-October,1950
FifthEdition-December,1954
SixthEdition-November,1968
SeventhEdition-September,1975EighthEdition-August,1981
NinthEdition-March,1988
TenthEdition-November,1994EleventhEdition-January,2000
TwelfthEditionAugust31,2011
ThisANSI/ULStandardforSafetyconsistsoftheTwelfthEditionincludingrevisionsthroughSeptember18,2020.
CommentsorproposalsforrevisionsonanypartoftheStandardmaybesubmittedtoULatanytime.ProposalsshouldbesubmittedviaaProposalRequestinUL'sOn-LineCollaborativeStandardsDevelopmentSystem(CSDS)at
.
UL'sStandardsforSafetyarecopyrightedbyUL.NeitheraprintednorelectroniccopyofaStandardshouldbealteredinanyway.AllofUL'sStandardsandallcopyrights,ownerships,andrightsregardingthoseStandardsshallremainthesoleandexclusivepropertyofUL.
COPYRIGHTO2020UNDERWRITERSLABORATORIESINC.
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CONTENTS
INTRODUCTION
1Scope 5
2Components 5
3UnitsofMeasurement 6
4UndatedReferences 6
5Glossary 6
CONSTRUCTION
6CoveringofElectricalParts 7
7Insulation 7
8Spacings 8
9TemperatureLimitation 9
10ControlUnits 1
11Switches 14
12InternalWiring 14
13Supply,Control,Pigtail,andInterconnectingCords 14
14Connections 18
PERFORMANCE
15General 19
16InputTest 21
17ControlImpactandCalibrationTest 21
18ControlUnitsTests 21
19NormalTemperatureTest 23
19.1Blankets,sheets,quilts,andcomforters 23
19.2Mattresses,footwarmers,andmattresspads 23
20FlexingTest 25
20.1General 25
20.2Flexingofmattresses 29
21ConnectorFlexingTest 29
22ThrowBlanketCordFlexingTest 31
23LeakageCurrentTest(AllProductsExceptMattresses) 33
24DielectricVoltage-WithstandTest(AllProductsExceptMattresses) 33
25Laundering(AllProductsExceptMattresses) 34
26RollerFlexingTest(Mattresses,MattressPads,andFootWarmers) 34
27LeakageCurrentTest-Repeated(AllProductsExceptMattresses) 35
28DielectricVoltage-WithstandTest-Repeated(AllProductsExceptMattresses) 35
29NormalTemperatureTest-Repeated(AllProducts) 35
30ImmersionTest(Blankets,Sheets,Quilts,andComforters) 35
31AbnormalTemperatureTests 35
31.1General 35
31.2Firstmethodoffolding 36
31.3Secondandthirdmethodoffolding 38
31.4Threethicknessandfivethicknessfold 39
31.5Multi-thicknessfold 41
31.6Bunchtest 41
31.7Fullyblanketed 44
318/Disabledcontrol aπ后DIA.MOπ.AITMODI7EN.EAn.ERTMG0.44
32D.0To L
R
33FinalMattressTests..TRIBUTIONwTH0UTPERI2Ssi…NFR…U46
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34FlammabilityofShells 46
35EaseofIgnitionTest 56
36EffectofCleaningSolventsonBeddingTests(AllProductsExceptMattresses) 59
37ThermostatsinBedding 60
38AbnormalOperationTestforProductsEmployingSemiconductorHeaterWire 63
39Push-BackStrainReliefTest 64
MANUFACTURINGANDPRODUCTIONLINETESTS
40PolarizationContinuityCheckTest 64
RATINGS
41Details 65
MARKINGS
42Details 65
SUPPLEMENTSA-REMOTEANDDELAYEDSTARTSCHEDULINGELECTRICALLYHEATED
BEDDING
INTRODUCTION
SA1Scope 69
SA2Glossary 69
CONSTRUCTION
SA3Controls-General 70
SA4ResistancetoElectroMagneticPhenomena(Immunity) 70
MARKINGSANDINSTRUCTIONS
SA5General 71
APPENDIXA
StandardsforComponents 72
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INTRODUCTION
1Scope
1.1Theserequirementscoverelectricallyheatedblankets,comforters,quilts,sheets,mattresspads,mattresses,footwarmers,throwblanketsandsimilarbedding.
1.2TheseproductsareforuseinaccordancewiththeNationalElectricalCode,ANSI/NFPA70,onsingle-phasealternating-currentsupplycircuitsoperatingatanominalpotentialof110to120Vac.
1.3Allbeddingiscord-connectedandissuppliedwitheitheraswitchoroneortwouser-adjustabletemperature-controlunits.Beddingmaybethermostaticallycontrolled.
1.4Beddingintendedforconnectiontootherthananominal120Vacsupplyvoltage,andbeddingforusewithwaterbeds,mechanicalbedsandthelike,aretobesubjecttoadditionalinvestigation,with
considerationgiventotheirintendeduse.
2Components
2.1Acomponentofaproductcoveredbythisstandardshall:
a)Complywiththerequirementsforthatcomponentasindicatedinthisstandard;
b)Beusedinaccordancewithitsrating(s)establishedfortheintendedconditionsofuse;c)Beusedwithinitsestablisheduselimitationsorconditionsofacceptability;
d)Additionallycomplywiththeapplicablerequirementsofthisendproductstandard;ande)Notcontainmercury.
Specificcomponentsareincompleteinconstructionfeaturesorrestrictedinperformancecapabilities.Suchcomponentsareintendedforuseonlyunderlimitedconditions,suchascertaintemperaturesnotexceedingspecifiedlimits,andshallbeusedonlyunderthosespecificconditions.
ExceptionNo.1:Acomponentofaproductcoveredbythisstandardisnotrequiredtocomplywithaspecificcomponentrequirementthat:
a)Involvesafeatureorcharacteristicnotrequiredintheapplicationofthecomponentintheproduct;
b)Issupersededbyarequirementinthisstandard;or
c)Isseparatelyinvestigatedwhenformingpartofanothercomponent,providedthecomponentisusedwithinitsestablishedratingsandlimitations.
ExceptionNo.2:Acomponentcomplyingwithacomponentstandardotherthanthosecitedinthisstandardisacceptableif:
a)Thecomponentalsocomplieswiththeapplicablecomponentstandardidentifiedinthisstandard;or
b)Thecomponentstandard:
ULCO1)7scompatiblewiththeampacityandovercurrentprotection
REPRODUwhereappropriate;TPERM
requirements'NFPA70,NFROMULI
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2)Considerslong-termthermalpropertiesofpolymericinsulatingmaterialsinaccordancewithPolymericMaterials-LongTermPropertyEvaluations,UL746B;and
3)Anyuselimitationsoftheothercomponentstandardisidentifiedandappropriatelyaccommodatedintheenduseapplication.Forexample,acomponentusedinahouseholdapplication,butintendedforindustrialuseandcomplyingwiththerelevantcomponentstandardmayassumeuserexpertisenotcommoninhouseholdapplications.
2.2Acomponentthatisalsointendedtoperformotherfunctions,suchasovercurrentprotection,ground-faultcircuit-interruption,surgesuppression,anyothersimilarfunctions,oranycombinationthereof,shallcomplyadditionallywiththerequirementsoftheapplicablestandard(s)thatcoverdevicesthatprovidethosefunctions.
Exception:Wheretheseotherfunctionsarenotrequiredfortheapplicationandnotidentifiedaspartofmarkings,instructions,orpackagingfortheappliance,theadditionalcomponentstandard(s)neednotbeapplied.
2.3Acomponentnotanticipatedbytherequirementsofthisstandard,notspecificallycoveredbythecomponentstandardsidentifiedinthisstandard,andthatinvolvesapotentialriskofelectricshock,fire,orpersonalinjury,shallbeadditionallyinvestigatedinaccordancewiththeapplicablestandard.
2.4Withregardtoacomponentbeingadditionallyinvestigated,referencetoconstructionandperformancerequirementsinanotherendproductstandardisappropriatewherethatstandardanticipatesnormalandabnormaluseconditionsconsistentwiththeapplicationofthisstandard.
2.5MaterialsusedinaClass105(A)insulationsystemshallcomplywiththeNormalTemperatureTest,Section19.MaterialsusedinaninsulationsystemthatoperatesaboveClass105(A)temperaturesshalcomplywiththeStandardforSystemsofInsulatingMaterials-General,UL1446.
3UnitsofMeasurement
3.1Valuesstatedwithoutparenthesesaretherequirement.Valuesinparenthesesareexplanatoryorapproximateinformation.
4UndatedReferences
4.1Anyundatedreferencetoacodeorstandardappearingintherequirementsofthisstandardshallbeinterpretedasreferringtothelatesteditionofthatcodeorstandard.
5Glossary
5.1ForthepurposesofthisStandard,thefollowingdefinitionapplies.
5.2CLASS2SUPPLY-AsecondarycircuitsuppliedbyaClass2powersupplythatcomplieswiththeStandardforClass2PowerUnits,UL1310.
5.3LOW-VOLTAGECIRCUIT-Acircuitinvolvingapotentialofnotmorethan30voltsandsuppliedbyaprimarybattery,byastandardClass2transformer,orbyacombinationofatransformerandafixedimpedancethat,asaunit,complieswithalltheperformancerequirementsforaClass2transformer.Acircuitderivedfromaline-voltagecircuitbyconnectingresistanceinserieswiththesupplycircuitasa
meansoflimitingthevoltageandcurrentisnotconsideredtobealow-voltagecircuit.
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5.4SEMICONDUCTORHEATERWIRE-Aheatingelementconsistingoftwoconductorsseparatedbyaconductivematerialwhichhasarapidnon-linearincreaseinresistancewhenthetemperatureisraisedthroughaparticularrange.
5.5THROWBLANKET-Anelectricblanketintendedforuseinindoorlocationsbutnotspecificallyforuseonlyonbeds.Electricthrowblanketsaretypicallysmallerinoverallsizethanblanketsintendedforuseonbeds.Thelengthistypicallylessthan75inches(109.5cm)and/orthewidthistypicallylessthan38inches(96.5cm).
CONSTRUCTION
6CoveringofElectricalParts
6.1Exceptfortheconnectorattachedtothebedding,allelectricalpartsofthebeddingshallbeenclosedinashellorothercoveringofafabricinwhichtherearenoopenings.Allstuffing,padding,springs,andsimilarnonelectricalcomponentsofbeddingshallbeoutsidethiscoveringandshallnotbedetrimentaltothecoveringoritselectricalcontents.
6.2Allseamsinthefabricenclosingelectricalpartsshallbestronglystitchedorotherwiseequivalentlysecured.
7Insulation
7.1Electricalinsulationistobeconsideredwithrespecttoitsacceptabilityfortheparticularapplication.Ifitisnecessarytoinvestigateamaterialtodeterminewhetheritisacceptable,considerationistobegiventoitsmechanicalstrength,dielectricproperties,insulationresistance,heat-resistantqualities,thedegreetowhichitisenclosedorprotected,andanyotherfeatureshavingabearingontheriskoffire,electricshock,andinjurytopersonsinvolved,inconjunctionwithconditionsofactualservice.Allofthesefactorsaretobeconsideredwithrespecttothermalaging.
7.2Ordinaryvulcanizedfibermaybeusedforinsulatingbushings,washers,separators,andbarriersbutnotasthesolesupportforuninsulatedlivepartswhereshrinkage,currentleakage,orwarpagemayintroduceariskoffireorelectricshock.Thermoplasticmaterialsarenotconsideredtobeacceptableforthesolesupportofuninsulatedliveparts,unlesstheyhavebeenfoundtohavethenecessarystrengthandrigidity,resistancetoheat,resistancetoflamepropagation,dielectricproperties,andotherpropertiesacceptablefortheapplication.Allofthesefactorsaretobeconsideredwithrespecttothermalaging.
7.3Aninsulatinglinershallbeacceptableforthepurpose.Vulcanizedfiberorasimilarmaterialemployedwherespacingswouldotherwisebeunacceptableshallbe1/32inch(0.8mm)thickorthicker,andshallbesolocatedorofsuchmaterialthatitcannotbeadverselyaffectedbyarcing.However,164inch(0.4mm)orthickervulcanizedfiberisacceptableinconjunctionwithanadditionalairspacingof50percentormoreofthespacingrequiredforairalone.Barriersshallbesecuredinplacebyameansotherthanfrictionbetweensurfaces.Theelasticityoftubingshallnotbedependedupontoholdthetubinginplace.
7.4Theheatingelementshallbeelectricallyinsulatedforitsentirelengthsothatitisnotincontactwiththeshellorothercoveringfabricatanypoint.Theinsulatedheatingelementshallbeappliance-wiringmaterialacceptablefortheapplication.Theinsulatedheatingelementshallbesosecuredinpositionthatthereisnounduestressonitduringuse,handling,andcleaningofthebedding.Atleast9inches(229mm)ofthefootofablanket,sheet,quiltorcomforterthatcanbetuckedinduringnormaluseshallbedevoidofallelectricalpartsotherthanthemalehalfofthebeddingconnectorandtheportionofthe
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Exception:Beddingconstructedwithself-limitingsemiconductorheaterwireisabletobeprovidedwithelectricalpartstotheperimeterofthebedding.
7.5Heaterwire,includingsemiconductorheaterwire,shallcomplywiththeReferenceStandardforElectricalWires,Cables,andFlexibleCords,UL1581.Semiconductorheaterwireshalladditionallycomplywiththerequirementsforthermistor-typedevices,UL1434.
7.6Flexuralreliefshallbeprovidedfortheconductorsthatexitthemale-connectorbodyofablanketsheet,quilt,orcomforter.
7.7Eachthermostatandotherlivepartwithintheshellorothercoveringfabricshallnothaveanysharpedgesandshallbeelectricallyinsulatedwithinsulatingtubingacceptableforthevoltageandtemperatureinvolved.Theinsulationoneachpartshallbe:
a)Bonded,awatertightsealisrequired,totheinsulationontheheatingelementorotherwiringconnectedtothepart;and
b)Atleastasthickatthebondandelsewhereastheinsulationontheheatingelementorotherwiringconnectedtothepart.
7.8Aspliceinwiringwithinathermostatshallbeinsulatedifpermanenceofspacingfromthesplicetoothermetalpartsofthethermostatisnotprovided.
7.9PolymericelectricalinsulatingmaterialsandenclosuresshallcomplywiththeapplicablerequirementsoftheStandardforPolymericMaterials-UseinElectricalEquipmentEvaluations,UL746C.
7.10Therequirementsforsupplementalinsulation(e.g.tape,sleevingortubing)arenotspecifiedunlesstheinsulationordeviceisrequiredtofulfll7.1-7.4oraperformancerequirementofthisstandard.Insuchcases:
a)InsulatingtapeshallcomplywiththeStandardforPolyvinylChloride,Polyethylene,andRubberInsulatingTape,UL510;
b)SleevingshallcomplywiththeStandardforCoatedElectricalSleeving,UL1441;
c)TubingshallcomplywiththeStandardforExtrudedInsulatingTubing,UL224.
8Spacings
8.1Exceptasindicatedin8.2-8.4,oversurfaceandthrough-airspacingsnosmallerthan1/16inch(1.6
mm)shallbemaintainedfromuninsulatedlivepartsto:a)Uninsulatedlivepartsofoppositepolarity;andb)Accessiblemetalparts.
Exception:Thespacingsmaybelessthanspecifiedin8.1ifincompliancewiththeStandardforInsulationCoordinationIncludingClearancesandCreepageDistancesforElectricalEquipmentUL840.Thefollowingparametersshallbeusedunlessthemicroenvironmentisfurtherevaluatedandfoundtocomplywithotherparameters:
a)OvervoltageshallbeIl;
b)PollutionDegreeshallbe2;andREPRCc)MaterialGrouplHb.DISTRIB
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IfacircuitemploysavoltagelimitingdeviceforapplicationoftherequirementsintheStandardforInsulationCoordinationIncludingClearancesandCreepageDistancesforElectricalEquipmentUL840,thedeviceshallcomplywiththeStandardforSurgeProtectiveDevices,UL1449.
8.2Withinathermostat,exceptatthecontacts,thespacingsbetweenuninsulatedlivepartsonoppositesidesofthecontactsshallnotbelessthan1/32inch(0.8mm)throughairand3/64inch(1.2mm)overthesurfaceofinsulatingmaterial.
8.3Thespacingsmentionedin8.1and8.2donotapplytotheinherentspacingsofacomponent.Suchspacingsaretobeconsideredundertherequirementsforthecomponentinquestion.
8.4Atclosed-inpointsonly,suchasthescrew-and-washerconstructionofaninsulatedterminalmountedinmetal,aspacingof3/64inch(1.2mm)isacceptable.
9TemperatureLimitation
9.1Beddingshallbeprovidedwithmeanstoprecludetheattainmentofunacceptabletemperatures,see
19.1.1-19.1.3and31.1.1,onanypartofthebedding.
9.2Meanstoaverttheattainmentofunacceptabletemperaturesmaybeinherentintheconstructionofbedding-suchasalow-wattageheatingelement-thusnecessitatingnothermostatsorexternalcontrol.
9.3Thermostatsshallbedurable,reliable,uniforminoperation,andsufficientlysensitivefortheirintendeduseasdeterminedbycompliancewithThermostatsinBedding,Section37,andotherapplicablerequirements.
9.4Ifproperperformanceofathermostatdependsupontheintegrityofaclosedchamber,theconstructionshallprecludemoistureleaks,whichmayaffecttheuniformityandreliabilityofoperation.
9.5Athermostatinthebeddingshallnotbeadjustablebytheuserofthebeddingandshallbecoveredorsealedtoprecludetheentranceofdirtandlint.
9.6Materialsemployedinathermostatshallnotbeaffectedadverselybyanyoperatingconditionspresentedbythetestsdescribedintheserequirements.
9.7Platedsteel,exceptthatthebimetalneednotbeplated,maybeusedforacurrent-carryingpartinathermostatprovidedthatthepartisprotectedbysupplementarymeans(suchassealedsleeving)against
anyconditionsinvolvingmoisturetowhichthethermostatmaybesubjectedduringuseandcleaningofthebedding.
9.8Ifthermostatsorothertypesofdiscretetemperaturesensingdevicesareusedinthebeddingitself,theyshallbesufficientinnumberinaccordancewith9.10,andshallbeappropriatelylocatedtoenablethebeddingtocomplywith9.9,19.1.1-19.1.3,31.1.1,31.4.1-31.4.3,31.6.1-31.6.4,31.6.6,and31.6.7.Nosectionoftheheatingelementshallbeinserieswithfewerthantwodiscretesensingdeviceswhenthermostatsorothertypesofdiscretesensingdevicesareemployed.
9.9Compliancewiththerequirementin9.8istobedeterminedbyappropriatetestingthat,inthecaseofasheet,overblanket,quilt,orcomforter,istoincludethebunchingtestdescribedin31.6.1-31.6.4,31.6.6and31.6.7.
9.10Ablanket,sheet,quilt,orcomforterincorporatingdiscretesensingdevicesandintendedforuseon
atwin,double,queenorking-sizebedshallcomplywitheachofthefollowing:DFCRFURTHER
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a)Atleast10discretesensingdevicesaretobeusedinasizeintendedforatwinbedandineachhalfofaking-sizebed.Twelveormoredevicesaretobeusedinasizeintendedforadoubleorqueen-sizebed.
Exception:Ablanket,sheet,quilt,orcomfortertestedasspecifiedin31.5.1and31.6.5mayemployfewersensors.
b)Thetoprowofdiscretesensingdevicesinasizeintendedforatwinbed,inasizeintendedforadoubleorqueenbed,andineachhalfofasizeintendedforaking-sizebedistobesecuredagainstmigrationduringuse,handling,andcleaningoftheproduct.
9.11Whenaproductemployingatemperaturecontrolsystememploysanelectroniccircuitintendedtoprovideadegreeofprotectionagainsttheriskoffire,electricshock,orinjuryifafaultshouldoccurinthewire,thecircuitshallcomplywiththerequirementsfortestsforSafety-RelatedControlsEmployingSolid-StateDevices,UL991.Whentheelectroniccircuitisprovidedwithafusewhichisintendedtoopenasaresultofafaultinthewire,renderingtheproductinoperable,thefuseshallcomplywiththeStandardforLow-VoltageFuses-Part1:GeneralRequirements,UL248-1,andtheStandardforLow-VoltageFuses-Part14:SupplementalFuses,UL248-14.
Exception:ControlscomplyingwiththeStandardforAutomaticElectricalControlsforHouseholdandSimilarUse,Part1:GeneralRequirements,UL60730-1,includingAnnexH,fulfillstheaboverequirementsoftheStandardforTestsforSafety-RelatedControlsEmployingSolid-StateDevices,UL
991.
9.12SoftwarereliedontocomplywiththisstandardshallcomplywiththeStandardforSoftwareinProgrammableComponents,UL1998.
Exception:ControlscomplyingwiththeStandardforAutomaticElectricalControlsforHouseholdandSimilarUse,Part1:GeneralRequirements,UL60730-1,includingAnnexH,fulfillstheaboverequirementsoftheStandardforTestsforSafety-RelatedControlsEmployingSolid-StateDevices,UL
991.
9.13AthermalcutoffshallcomplywiththeStandardforThermal-Links(ThermalCutoffs)forUseinElectricalAppliancesandComponents,UL60691.
9.14Thefollowingtestparametersaretobeusedintheinvestigationofthecircuitcoveredby9.11forcompliancewiththeStandardforTestsforSafety-RelatedControlsEmployingSolid-StateDevices,UL991:
a)Withregardtoelectricalsupervisionofcriticalcomponents,acontrollershallnotpermitelectricbeddingfromexceedingtemperaturelimitsspecifiedin19.1.1and19.1.2ofthisstandard.
b)Afieldstrengthof3VpermeteristobeusedfortheRadiatedEMITest.
c)TheCompositeOperationalandCyclingTestistobeconductedfor14daysattemperatureextremesof0℃(32°F)and25℃(77°F).
d)ExposureClassH3istobeusedfortheHumidityTest.e)Avibrationlevelof5gistobeusedfortheVibrationTest.
f)WhenaComputationalInvestigationisconducted,λ。shallnotbegreaterthan6failures/106hoursfortheentiresystem.TheOperationalTestistobeconductedfor14days.
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