1. Structure of Solar Photovoltaic On-Grid Connected Inverter SG20KTL DescriptionA solar inverter, or PV inverter, or Solar converter, converts the variable direct current (DC) output of a photovoltaic (PV) solar panel intoÿautility frequency alternating current (AC) that can be fed into a commercial electrical grid or used by a local, off-grid electrical network.ÿIt is acritical BOS?component in a photovoltaic system, allowing the use of ordinary AC-powered equipment. Solar inverters have special functions adapted for use with photovoltaic arrays, including maximum power point tracking and anti-islanding protection.ÿSuitable for 50Hz/60Hz grid, could be used in Asia, Africa and Europe. Available for hand installation, no need for lifting machineryÿassistance. ÿ2. Main Features of the Photovoltaic On-Grid Connected Inverter SG20KTL? Full 20 kW effective power at power factor of 0.9 due to apparent power reserves up to 22.2 kVA? Photon test results “very good”, with a maximum efficiency of 98% (Photon Profi 2-2012)? Dual MPP trackers control? Active power continuously adjustable (0~100%)?Reactive power control with power factor 0.8 overexcited ~ 0.8 underexcited?Includes RS-485 interface, compatible with all common monitoring systems? Product certification: TšV, CE, CEI 0-21, G59/2, AS4777, BDEW, VDE AR-N-4105, CGC, compliance with Italian medium voltage grid requirement? Manufacturer certification: ISO 9001, ISO 14001, OHSAS 18000ÿ3. Photovoltaic On-Grid Connected Inverter SG20KTL Imagesÿÿÿÿÿ4. Photovoltaic On-Grid Connected Inverter SG20KTL SpecificationInput Side DataMax. PV input power21000W(10500W/10500W)Max. PV input voltage1000VStartup voltage300VNominal input voltage620VMPP voltage range280~950VMPP voltage range for nominal power480~800VNo. of MPPTs2Max. number of PV strings per MPPT3Max. PV input current42A(21A/21A)Max. current for input connector12AOutput Side DataNominal AC output power20000WMax AC output power?PF=1?22200WMax. AC output apparent power22200VAMax. AC output current33ANominal AC voltage3/N/PE, 230/400VacAC voltage range310~480VacÿNominal grid frequency50Hz/60HzGrid frequency range47~53Hz/57~63HzTHD< 3 %ÿ (Nominal power)DC current injection<0.5 %InPower factor>0.99@defaultÿvalueÿatÿnominalÿpower(adj. 0.8overexcited ~0.8underexited )ProtectionAnti-islanding protectionYesLVRTYesDC reverseÿconnectionÿprotectionYesAC short circuit protectionYesLeakage current protectionYesDC switchYesDC fuseNoOvervoltage protectionVaristorsSystem DataMax. efficiency98.00%Max. European efficiency97.30%Isolation methodTransformerlessIngress protection ratingIP65Night power consumption<1WOperating ambient temperature range-25~60?(>45? derating)Allowable relative humidity range0~100%Cooling methodSmart forced air coolingMax. operating altitude4000m (?3000m derating)ÿDisplayGraphic LCDCommunicationRS485?RJ45 connector?DC connection typeMC4AC connection typePlug and play connectorCertificationEN62109-1, EN62109-2, EN61000-6-2?EN61000-6-3, VDE0126-1-1,CEI 0-21, AS/NZS3100, AS4777.2, AS4777.3,VDE-AR-N-4105, BDEW, CGCMechanical DataDimensions?W?H?D?648?686?246mmMounting methodWall bracketWeight55kgÿÿ5. FAQ of Photovoltaic On-Grid Connected Inverter SG20KTLQ1. What is the difference betweenÿinverterÿandÿsolar inverter?A1. Inverter only has AC inpput, but solar inverter both connect to AC input and solar panel, it saves more power.ÿÿQ2. What is the difference betweenÿMPPT&PWM?A2. MPPT has higher efficiency, it can track the max power point and won’t waste energy.