Delta SI 5000

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11 Glossary
AC
Abbreviationfor„AlternatingCurrent“.
CE
WiththeCEidenticationcode,themanufacturerconrmstheconformityoftheproductwiththe
validECGuidelineandcompliancewiththesignicantrequirementsstipulatedtherein.
DC
Abbreviationfor„DirectCurrent“.
EMC
TheElectro-MagneticCompatibility(EMC)concernsthetechnicalandlegalbasicsofthemutual
inuencingofelectricaldevicesthroughelectromagneticeldscausedbytheminelectricalengi-
neering.
Anti-islanding protection
Thisisaunitfornetworkmonitoringwithassignedswitchingelements(anti-islandingprotection)
andisanautomaticisolationpointforsmallpowergenerationsystems(to30kWp).
Initialization
Underinitialization(cf.Englishtoinitialize)isunderstoodthepartoftheloadingprocessofapro-
gram,inwhichthestoragespacerequiredfortheexecution(e.g.variable,code,buffers...)forthe
programisreservedandislledwithinitialvalues.
LOCALUTILITYCOMPANY
Bylocalutilitycompanyismeantacompanywhichgenerateselectricalenergyanddistributesit
overthepublicmains.
MPP
TheMaximumPowerPointisthepointofthecurrent-voltagediagramofasolarcellatwhichthe
largestpowercanbetappedoff,i.e.thepointatwhichtheproductofcurrentandvoltagehasits
maximumvalue.
Nominal power
Nominalpoweristhemaximumpermissiblecontinuouspoweroutputindicatedbythemanufacturer
foradeviceorasystem.Usuallythedeviceisalsooptimizedsothattheefciencyisatitsmaximum
incaseofoperationwithnominalpower.
Nominal current
Nominalcurrentistheabsorbedcurrentincaseofelectricaldevicesifthedeviceissuppliedwith
thenominalvoltageandyieldsitsnominalpower.
PE
Inelectricsystemsandcablesaprotectiveearthconductorisfrequentlyemployed.Thisisalsocalled
groundingwire,protectivegroundingdevice,soil,groundingorPE(English„protectiveearth“).
Photovoltaics(abbr.:PV)
Theconversionofsolarenergyintoelectricalenergy.
Thenameiscomposedofthecomponentparts:Photos-theGreekwordforlight-andVolta-after
AlessandroVolta,apioneerinelectricalresearch.