Eastron SDM120 Series User manual

www.eastron.se*
SDM120seriesUserManual 

JIAXINGEASTRONELECTRONICINSTRUMENTSCO.,TLD.  
Address:No.1369,ChengnanRoad,Nanhu,Jiaxing,Zhejiang,China
Tel:+865738369888183698882  Fax:+8657383698883    
Email:[e-mail]Web:www.eastrongroup.com

SDM120SERIES
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SinglephasetwowireDINrailenergymeter
(Onemodule)
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  
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Usermanual

1.1Safetyinstruction 
1.2Foreword 
1.3Performancecriteria 
1.4Specifications 
1.5Basicerrors
1.6Dimension&material
1.7Installation
1.8Operating
1.9Technicalsupport
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SDM120seriesUserManual 

JIAXINGEASTRONELECTRONICINSTRUMENTSCO.,TLD.  
Address:No.1369,ChengnanRoad,Nanhu,Jiaxing,Zhejiang,China
Tel:+865738369888183698882  Fax:+8657383698883    
Email:[e-mail]Web:www.eastrongroup.com
1.1Safetyinstructions

InformationforYourOwnSafety
Thismanualdoesnotcontainallofthesafetymeasuresoperatingtheequipment(module,devi ce)fo r
differentconditionsa n drequirements.However,itdoescontai ninformationwhich youmustknowfo r 
youro wn saf et yan dtoa void da mage s.Thisi n fo rm a ti o nish i gh l igh ted b y awa rn in g tri ang l e indicating
thedegreeofpotentialdanger.
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
Warning
Itmeansthatfailuretofollowtheinstructioncanresultindeath,seriousinjuryor
considerablematerialdamage.
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Caution
Itmeanshazardofelectricshockandfailuretotakethenecessarysafetyprecautions
willresultindeath,seriousinjuryorconsiderablematerialdamage.
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Qualifiedpersonnel
Operationoftheequipment(module,device)describedinthismanualmayonlybeperformedby
qualified personnel. Qualified personnel in this manual meanspersonwhoareauthorizedto
commission, start up, ground and label devices, systems and circuitsaccording to safetyand
Regulatorystandards.
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Usefortheintendedpurpose
Theequipment(device,module)mayonlybeusedfortheapplicationspecifiedinthecatalogueand
theusermanual,andonlybeconnectedwithdevicesandcomponentsrecommendedandapproved
byEastron.
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Properhandling
Theprerequisitesforperfect,reliableoperationoftheproductarepropertransport,properstorage,
installationandproperoperationandmaintenance.Whenoperatingelectricalequipment,partsofthis
equipmentautomaticallycarrydangerousvoltages.Improperhandlingcanthereforeresultinserious
injuriesormaterialdamage.
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Useonlyinsulatingtools.
Donotconnectwhilecircuitislive(hot).
Donotconnectthemetertoa3phase400VAC–network.
Placethemeteronlyindrysurroundings.
Donotmountthemeterinanexplosiveareaorexposethemetertodust,mildewandinsects. 
Makesurethewiresaresuitableforthemaximumcurrentofthismeter.
Make sure the AC wires are connected correctly before activating the current/voltage to the
meter.
Donottouchthemeterconnectingclampsdirectlywithmetal,blankwireandyourbarehandsas
youmaygetelectricalshock.
Makesuretheprotectioncoverisplacedafterinstallation.
Installation,maintenanceandreparationshouldonlybedonebyqualifiedpersonnel.
Neverbreakthesealsandopenthefrontcoverasthismightinfluencethefunctiono fth emeter,
andwillcausenowarranty.
Donotdrop,orallowstrongphysicalimpactonth e m e te r as theh i g h preciselyc omp o ne n ts i n s id e
maybedamaged.
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www.eastron.se*
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SDM120seriesUserManual 

JIAXINGEASTRONELECTRONICINSTRUMENTSCO.,TLD.  
Address:No.1369,ChengnanRoad,Nanhu,Jiaxing,Zhejiang,China
Tel:+865738369888183698882  Fax:+8657383698883    
Email:[e-mail]Web:www.eastrongroup.com

Disclaimer
Wehavecheckedthecontentsofthispublicationandeveryefforthasbeenmadetoensurethatthe
descriptionsareasaccurateaspossible.

However,deviationsfromthedescriptioncannotbecompletelyruledout,sothatnoliabilitycanbe
accepted for any errorscontainedintheinformationgiven. The data in this manual ischecked
regularlyandthenecessarycorrectionsareincludedinsubsequenteditions.Wearegratefulforany
improvementsthatyousuggest.
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1.2  Foreword
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ThankyouforpurchasingtheEastronSDM120seriesDINrailsinglephasetwowireenergymeter.
With the Eastronproductrangewehaveprovidedalargescaleofenergymetersonthemarket
suitablefor110VACto400VAC(50or60Hz).SDM120seriesareonly1module(17.5mm)width,
ensuring a high accuracy class (better than Class1), a very low starting current which makes it
exceptionallysuitableforsubmeteringsystemandgeneraluse.
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1.3  Performancecriteria:
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Operatinghumidity                   ≤85%
Storagehumidity                      ≤95%
Operatingtemperature                 20°C+50°C
Storagetemperature                   30°C+70°C
Internationalstandard IEC6205321
Accuracyclass     1
Protectionagainstpenetration 
ofdustandwaterIP51
Insulatingencasedmeterof 
Protectiveclass                Ⅱ
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1.4  Specifications:
Metertype                            SDM120A(Mechanicalregisterdisplay)
SDM120D(LCDdisplay)
SDM120DB(LCDwithbacklit)
Nominalvoltage(Un)230VAC
Operationalvoltage161300VAC
Insulationcapabilities:
ACvoltagewithstand                2KVfor1minute 
Impulsevoltagewithstand            6KV–1.2µSwaveform
Basiccurrent(Ib)    5A
Maximumratedcurrent(Imax)45A
Operationalcurrentrange 0.4%IbImax
Overcurrentwithstand30Imaxfor0.01s  
Operationalfrequencyrange  50Hz±10%  
Internalpowerconsumption  ≤2W/10VA  
Testoutputflashrate(REDLED)  1000imp/kWh(2000imp/kWhoptional)
Pulseoutputrate(pins6&7)  1000imp/kWh  (2000imp/kWhoptional)
Consumptionindicator(REDLED)      Flashingatloadrunning
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SDM120seriesUserManual 

JIAXINGEASTRONELECTRONICINSTRUMENTSCO.,TLD.  
Address:No.1369,ChengnanRoad,Nanhu,Jiaxing,Zhejiang,China
Tel:+865738369888183698882  Fax:+8657383698883    
Email:[e-mail]Web:www.eastrongroup.com
1.5  Basicerrors:

0.05Ib   Cosφ=1±1.5%
0.1Ib     Cosφ=0.5L  ±1.5%
      Cosφ=0.8C  ±1.5%
0.1IbImaxCosφ=1  ±1.0%
0.2IbImaxCosφ=0.5L  ±1.0%
      Cosφ=0.8C  ±1.0%
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1.6Dimensionsandmaterial

Material
Case      PCalloyinflammableretarding
ProtectioncoverPCalloyinflammableretarding
ClampNylon
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1.7  Installation
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 CAUTION
Turnoffallthepowerbeforeworkingonit.
Alwaysuseaproperlyratedvoltagesensingdevicetoconfirmthatpower
isoff.
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www.eastron.se*
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SDM120seriesUserManual 

JIAXINGEASTRONELECTRONICINSTRUMENTSCO.,TLD.  
Address:No.1369,ChengnanRoad,Nanhu,Jiaxing,Zhejiang,China
Tel:+865738369888183698882  Fax:+8657383698883    
Email:[e-mail]Web:www.eastrongroup.com
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Werecommendthattheconnectingwirewhichisusedtoconnectthemetertotheoutside
circuitshouldbesizedaccordingtolocalcodesandregulationsforthecapacityofthecircuit
breakerorovercurrentdeviceusedinthecircuit.
Anexternalswitchoracircuitbreakershouldbeinstalledontheinletwire,whichwillbeused
asadisconnectiondeviceforthemeter.And there itisrecommendedthattheswitchor
circuitbreakerisnearthemetersothatitismoreconveniencefortheoperator.Theswitch
orcircuitbreakershouldcomplywiththespecificationsofthebuildingelectricaldesignand
alllocalregulations.
Anexternalfuseorthermalcutoffwhichwillbeusedasaovercurrentprotectiondevicefor
the meter must be installed on the supply side wire, and it is recommended that the
overcurrent protection device isnearthemetersothatitismoreconvenience for the
operator.Theovercurrent protectiondeviceshouldcomplywiththespecificationsofthe
buildingselectricaldesignandalllocalregulations.
Thismetercanbeinstalledindoordirectly,orinameterboxwhichiswaterproofoutdoor,
subjecttolocalcodesandregulations.
Topreventtampering,securethemeterwithapadlockorasimilardevice.
Themeterhastobeinstalledagainstawallwhichisfireresistant.
Themeterhastobeinstalledinagoodventilatedanddryplace.
The meterhastobeinstalledinaprotectionboxwhenplacedindangerousordusty
environment.
Themetercanbeinstalledandusedafterbeingtestedandsealedwithaletterpressprinting.
Themetercanbeinstalledona35mmDINrail.
Themetershouldbeinstalledinanavailableheightsothatitiseasytoread.
When the meter is installed in an area with frequent surges due to e.q. thunderstorms,
weldingmachines,invertersetc,protectthemeterwithSurgeProtectionDevices.
Afterfinishinginstallation,themetermustbesealedtopreventtampering.
Connection of the wires should be done in accordance with the underneath connection
diagram.
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Terminal1:Lin     Terminal2:Lout
Terminals3&4:Neutral
Terminal6&7:Pulseoutput
WARNING
Installationshouldbeperformedbyqualifiedpersonnelfamiliarwith
relatedproceduresandregulations.
Useinsulatingtoolstoinstallthemeter.
Fuseorthermalcutofforsinglepolecircuitbreakercan’tbefittedonthe
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supplylineandnottheneutralline.
Thecaseissealed,donotbrokenit
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www.eastron.se*
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SDM120seriesUserManual 

JIAXINGEASTRONELECTRONICINSTRUMENTSCO.,TLD.  
Address:No.1369,ChengnanRoad,Nanhu,Jiaxing,Zhejiang,China
Tel:+865738369888183698882  Fax:+8657383698883    
Email:[e-mail]Web:www.eastrongroup.com
1.8Operating
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Consumptionindication
ThereisaLED onfrontpanel,wh ichflasheswhenconsumptionhappensThemorequicklyLEDflashes,
themoreconsumptionhappens.TheconstantoftheLEDis1000imp/kWh.
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Readingthemeter
TheSDM120Aenergymeterisequippedwitha5+1r eg i s te r .Fivein teg e r sa r ema r ke d wi t hbl ac k co lo r
andonedecimalismarkedwithred.TheSDM120Dser iesenerg yme terisequipped with6digitsLCD
displaywhichisusedasrecordingconsumptionandcan’tberesettozero.Beforetheaccumulated
readinggoto 10,000kWh,theLCD showsin xxxx.xx (4 integrals+2decimals). After thereading
reachesto10,000kWh,theLCDshowsinxxxxx.x(5integrals+1decimal).TheMax. reading is
99999.9kWh. 
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Pulseoutput
TheSDM120SeriesDINrailenergymeterisequippedwithapulseoutputwhichisfullyseparated
from theinsidecircuit.Thatgeneratespulsesinproportiontothemeasuredenergy foraccuracy
testing. Thepulseoutput is apolarity dependant, passive transistor output requiring an external
voltagesourceforcorrectoperation.Forthisexternalvoltagesource,thevoltage(Ui)shouldis527V
DC,andthemaximuminputcurrent(Iimax)is27mADC.Toconnecttheimpulseoutput,connect
527VDCtoconnector7(anode),andthesignalwire(S)toconnector6(cathode). 
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1.9Technicalsupport
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Ifyouhaveanyquestion,pleasecontact:

TEL:
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+865738369888183698882
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FAX:+8657383698883
Email:

[e-mail]
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www.eastrongroup.com
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                       
                      