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SG30KU_SG36KU-UEN-Ver10-201403 Version: 1.0

User Manual

SG30KU/SG36KU

PV Grid-Connected Inverter

Summary of Contents for SG30KU

Page 1: ...SG30KU_SG36KU UEN Ver10 201403 Version 1 0 User Manual SG30KU SG36KU PV Grid Connected Inverter...

Page 2: ......

Page 3: ...about other devices at www sungrowpower com or via webpage of device manufacturer Target Group The manual is targeted to technical personnel who is responsible for inverter installation and commissio...

Page 4: ...ided will result in death or serious injury WARNING indicates a hazard with a medium level of risk which if not avoided could result in death or serious injury CAUTION indicates a hazard with a low le...

Page 5: ...utility grid and from the PV input before touching any inner live parts Hot surface In order to reduce the risk of burns do not touch the hot surface when the device is running Look over the user man...

Page 6: ...ription 10 2 3 1 Principle Description 10 2 3 2 Functions Description 11 2 3 3 Derating 12 3 Installation Flow 14 4 Unpacking and Storage 16 4 1 Unpacking and Inspection 16 4 2 Available Versions 17 4...

Page 7: ...cond Protective Earth Terminal 44 6 6 Communication Connection 45 6 6 1 Communication Overview 45 6 6 2 Communication System 46 6 6 3 RS485 Communication Connection 48 6 6 4 Configurable Dry Contact 5...

Page 8: ...74 10 6 1 Running Information Records 74 10 6 2 Fault Records 74 10 7 Start and Stop Inverter 75 10 8 Input Parameter Settings Password 75 10 9 System Parameters Setting 76 10 9 1 Time Setting 76 10...

Page 9: ...der voltage Parameter 88 11 3 Grid Over Under frequency Parameter 88 11 4 P Q Curve 88 11 5 Automatic Power Derating 89 11 5 1 Temperature related Power Derating 89 11 5 2 Input Voltage related Power...

Page 10: ......

Page 11: ...nverter and other properties that belong to the operator or a third party Therefore the following safety instructions must be read and always kept in mind prior to any work All detailed work related s...

Page 12: ...cted System performance loss due to bad ventilation The equipment requires good quality ventilation during operation It is essential to keep the unit upright and nothing covering the heat sink in orde...

Page 13: ...ind that the inverter is power supplied by dual power source PV arrays and utility grid Before any service work you should obey the following procedures y Disconnect inverter from the utility grid sid...

Page 14: ...oss of any or all warranty rights There is a risk of inverter damage due to electrostatic discharge The printed circuit boards contain components sensitive to electrostatic discharge Wear a grounding...

Page 15: ...he inverter assures to detect the arc fault defined by UL1699B The DC ARC Fault circuit is for series arcing faults or a type 1 device The SG30KU and SG36KU inverter s DC Arc Fault Detection AFDI func...

Page 16: ...PV Power System Item Description Note A PV strings Monocrystalline silicon polycrystalline silicon and thin film without grounding of protection class II B Inverter SG30KU SG36KU C Metering device Mt...

Page 17: ...ndles The handles are designed for holding the unit when transporting installing or servicing 4 Second PE Terminals Second protective earth terminals as specified in EN 50178 5 Air outlet Exit of hot...

Page 18: ...interaction interface LCD display panel comprises LED indicators buttons and LCD display screen on the front panel of the inverter y LEDs indicate the working status of the inverter y The current runn...

Page 19: ...ters to be set Tab 2 2 Description of LED Indicator Status LED Status Description RUN on Inverter is feeding AC power to the utility grid FAULT off RUN off A fault happens or protection function trigg...

Page 20: ...ts DC power into AC power which will be fed into the utility grid via five core terminals Protective circuits are designed to guarantee inverter safe operation and human safety A DC switch is integrat...

Page 21: ...ion for optimal operation y Communication interface Standard RS485 interface for connecting other monitoring devices into the PV system is included y Arc Fault Detection If a DC arc fault is detected...

Page 22: ...ce the power evenly to the maximum limit and keep the output power at nominal value Fig 2 6 PV Overload Derating Power Limit Setting User may allocate output power value of the inverter via LCD contro...

Page 23: ...ge The deration lower limitation is about 33 If the modules temperature and the inner temperature are both exceed the limit the actual derating power value will be the less one Grid Under voltage Dera...

Page 24: ...14 3 Installation Flow Fig 3 1 shows the installation flow of inverter for installer Please follow these procedures Fig 3 1 Installation Flow Chart...

Page 25: ...it if not install immediately Section 4 4 4 Choose the best installation site Section 5 1 5 Moving the inverter to installation site Section 5 2 6 Install the inverter against the chosen wall Section...

Page 26: ...y Check the inner contents for damage after unpacking y Check the completeness of delivery contents according to the inner packing list If there is visible damage to the packaging or the inner conten...

Page 27: ...KU S1 VERSION SG30_36KU S11 VERSION SG30_36KU S12 VERSION SG30_36KU S13 VERSION Tab 4 2 Wiring box configurations available Type Available Components SG30_36KU S0 VERSION DC Switch DC Input Fuses SG30...

Page 28: ...oduct you receive may differ Item Description 1 SUNGROW logo and product type 2 Technical data of inverter 3 Marks of certification institutions of inverter 4 Company name website and origin Tab 4 3 D...

Page 29: ...ts Seven units It is used for fastening backplate onto concrete wall D Fastener set Seven units It is used for fastening backplate onto metal frame E Fix screws 2 M4 16 screws for fix the inverter to...

Page 30: ...e unit must be stored in a clean and dry place to protect against dust and moisture y The storage temperature should be always between 30 and 85 And the storage relative humidity can reach 100 y The r...

Page 31: ...long period of time y Install the unit where is accessible to install electrical connect or service y Do not install the unit on the wall of flammable materials y Do not install the inverter where con...

Page 32: ...age to the internal device components y Avoid exposing inverter to direct sunlight or rain or snow to extend its service life despite the NEMA 4X protection degree Exposure to the sun may cause additi...

Page 33: ...produced during running of inverter which may affect your daily life 5 2 Moving Inverter to Installation Site If the inverter is to be installed remove the unit from the packaging and move it to the...

Page 34: ...don t use the supplied backplate you may drill holes refer to its dimension below Fig 5 1 Dimensions of Backplate unit mm There are two sets of stainless fasteners supplied for attaching the backplate...

Page 35: ...oid electrical shock or other injury inspect existing electronic or plumbing installations before drilling holes Step 5 Attach the backplate to the wall firmly with the supplied expansion bolt set The...

Page 36: ...the backplate as the template Step 4 Drill 6 holes at the marks you have made If the shape of the metal frame doesn t fit the holes on the backplate re drill holes on the backplate of appropriate pos...

Page 37: ...late and then slide down to make sure that the recesses on the back of the inverter fit perfectly together with the backplate Step 8 After fit the inverter to the backplate fasten the inverter to the...

Page 38: ...he positions to drill holes using the floor bracket as the template Step 5 Drill holes according to the marks made before In order to avoid electrical shock or other injury inspect existing electronic...

Page 39: ...rter and make sure them fit perfectly together with the mounting ear Fix the bracket with two M4 16 screws Step 3 Install the fixing plates on the bracket Step 4 Assemble the cap onto the inverter for...

Page 40: ...hanical Installation User Manual 30 L1 Distance from the center of the fans to the floor L2 The shortest distance from the top cover of the inverter to the PV panel You may order the brackets from Sun...

Page 41: ...ules Improper operation during the wiring process can cause fatal injury to the operator or unrecoverable damage to the inverter Only qualified personnel can perform the wiring work Prior to any elect...

Page 42: ...d plug Trade size 1 3 Communication cable openings with plastic threaded plug Trade size 1 2 Make sure the appropriate conduit hub is used in order to maintain required spacing between wiring groups a...

Page 43: ...iner unit layouts are shown below Tab 6 1 Complete list of combiner unit components No Description No Description 1 DC switch 6 AC switch 2 DC SPDs Surge Protection Devices 7 AC SPD 3 Configuration ci...

Page 44: ...6 Electrical Connection User Manual 34 SG30_36KU S11 VERSION SG30_36KU S12 VERSION SG30_36KU S13 VERSION...

Page 45: ...h must trigger at a failure current of 300mA or higher 6 3 2 Grid Connection Wiring methods used should be in accordance with the National Electric Code ANSI NFPA 70 and or any prevailing local codes...

Page 46: ...ction is mandatory Danger to human life due to high voltage existing inside the inverter Make sure that all the DC and AC cables to the inverter are not live before you start the electrical work To pr...

Page 47: ...he PE conductors to the corresponding terminals on the AC Terminal Block y Observe the pin assignment of AC terminal block If a phase wire is connected to the PE terminal it may permanently destroy th...

Page 48: ...he inverter will not function properly Before connecting the PV arrays to the inverter make sure that the impedances between the positive terminal of the PV string and Earth and the impedances between...

Page 49: ...ter should choose independent mode due to different orientation angle between the two PV inputs To make sure maximum DC power can be utilized PV strings connected to individual input area should have...

Page 50: ...the two PV inputs Prior to connecting the inverter to PV inputs the following electrical specifications must be met simultaneously Total DC Power Limit Open circuit Voltage Limit for Each Input Short...

Page 51: ...maximum For conductors with finer stranding a suitable UL listed wire ferrule must be used Cross section Area Range Max Withstand Voltage Max input current for each PV string 3 33 16 0mm2 12AWG 6AWG 1...

Page 52: ...ion not less than 6mm2 10 AWG as the following diagram shown The existing cable connections are not displayed in the below diagram The connection of each four ports in one terminal is equipotential St...

Page 53: ...sure Where there is only one inverter in the PV power system connect PE cable to the installation ground Where there are multiple inverters in the PV power system connect PE cables of all inverters an...

Page 54: ...als There are two second PE terminals on the right side of the inverter Users may choose one to connect PE connection Fig 6 5 Second PE Terminals Second PE Connection Fig 6 6 Connection of the Second...

Page 55: ...s on the configuration circuit board RS485 A B terminal blocks and RJ45 plug in terminals In the case of a need of terminating resistor switch on the 120 terminating resistor switch a terminating resi...

Page 56: ...ly out Only out Yes For Multiple Inverters Where there is more than one inverter all inverters can be connected to data logging device in daisy chain The first and last inverters in the chain must be...

Page 57: ...Connection 47 Inverter Communication Connection RS 485 A B bus or RJ 45 Terminating Resistor RS 485 A B bus RJ 45 Inverter 1 Only out Only out Yes Inverter 2 n 1 In and Out In and Out No Inverter n I...

Page 58: ...o confirm whether they are fastened firmly Step 6 According to the position of the inverter refer to the prior section switch ON or OFF the terminating resistor Step 7 If there is no other connection...

Page 59: ...to the RS485 out RS485 in terminal on the configuration circuit board Step 6 Pull cables outwards to confirm whether they are fastened firmly Step 7 According to the position of the inverter refer to...

Page 60: ...cted to the relays must comply with the related requirements AC Requirements DC Requirements Max Voltage 250Vac Max Current 5A Max Voltage 30Vdc Max Current 5A LOCAL STOP dry contacts The dry contacts...

Page 61: ...ories are correctly connected 6 Cables are routed in safe place or protected against mechanical damage 7 Specification of AC circuit breaker is reasonable 8 Terminals not used underneath the inverter...

Page 62: ...rrectly during commissioning reset the protective parameters as dictated in 10 11 Protective Parameters Setting There may be faults if otherwise Step 5 Configure grid code on the display Press j to se...

Page 63: ...TER Step 9 After configuring all parameters there will be a setting confirmation screen Check whether all above mentioned parameters are correct Confirm by Pressing ENTER Cancel by Pressing ESC and re...

Page 64: ...witch at the sides of the inverter to the OFF position and prevent them from reconnecting 2 Turn off the upstream DC circuit break or cover the PV arrays with opaque materials Please strictly follow t...

Page 65: ...er 1 Remove the cap and loose the screws from the upper lid 2 Lift up the upper lid slightly release the locking part of the ribbing of the LED screen and remove the lid 3 Disconnect all connection ca...

Page 66: ...ismantling and Disposing the Inverter User Manual 56 4 Unscrew all connection screws between the electrical cabinet and the combiner box with a suitable spanner and detach the electrical cabinet from...

Page 67: ...ing the Inverter Users should take the responsibility for the disposal of the inverter Some parts and devices in the inverter such as LCD displayer batteries capacitors may cause environment pollution...

Page 68: ...C switch to the OFF position 3 Check the correctness of electrical connection of inverter See 6 Electrical Connection 4 Check whether DC input voltage exceeds the inverter start voltage of inverter 5...

Page 69: ...e circuit and manually remove the fault by pressing ENTER 9 1 4 Troubleshooting of Faults in LCD Screen When faults occur Fault state will be shown on the main screen Press j to view multiple current...

Page 70: ...le upper limit 1 Check the frequency of the grid 2 If the grid frequency exceeds the permissible range of inverter protective parameters ask utility grid company for solution 3 If the grid frequency i...

Page 71: ...ecovery 2 If the fault occurs repeatedly contact Sungrow Service Dept 0020 The bus voltage is high 1 Wait a moment for inverter recovery 2 If the fault occurs repeatedly contact Sungrow Service Dept 0...

Page 72: ...verter recovery 2 If the fault occurs repeatedly contact Sungrow Service Dept 0040 AC or DC overcurrent fault or DC overvoltage fault 1 Wait a moment for inverter recovery 2 If the fault occurs repeat...

Page 73: ...the grid Contact Sungrow Service Dept 0075 Solar irradiation is not sufficient for inverter operation 1 Wait for higher irradiation 2 If this recurs at medium irradiation check the PV system design a...

Page 74: ...file Refer to the manuals of the data logging devices Once a month General state of system Visual check any damage or deformation of the inverter Check any abnormal noise during the running of the in...

Page 75: ...ide of the inverter for active cooling during running operation If the fans are dirty or out of work the inverter may not be cooled down well and its efficiency may accordingly decrease Therefore it i...

Page 76: ...elease the locking part of four connectors by pressing on the ribbing of the locking hooks and pull outwards 8 Remove fans from the inverter 9 You can clean the dirty fans with soft brush or vacuum cl...

Page 77: ...cting Dismantling and Disposing the Inverter 5 Check using a multimeter the assignment and conductivity of the fuse A fault occurs to the related fuse if it is non conductive 6 Check the fault fuse by...

Page 78: ...any problems in operating on the inverter please contact us Service hotline 86 551 65327817 Email service sungrow cn We need the following information to provide you the best assistance y Type of the...

Page 79: ...ds or increase the set value Hereinafter it is referred to as Press j Press more than two seconds Return to the previous menu or cancel the command Hereinafter it is referred to as Press ESC Press les...

Page 80: ...10 Operation of LCD Display User Manual 70 10 2 Inverter Menu Structure Fig 10 1 Menu Tree English...

Page 81: ...e inverter tracks the PV arrays maximum power point MPP and feeds AC power to grid This mode is the normal mode Standby Inverter will enter into Standby mode for insufficient input power In this mode...

Page 82: ...ng of the fault code please refer to 9 1 4 Troubleshooting of Faults in LCD Screen Tab 10 3 Icon Description Icon Description Inverter is in IAP update process Inverter in power reduction state Fans i...

Page 83: ...he DC power of each input Indep Paral mode is the PV configuration mode of the two PV inputs indicates the corresponding input is at work P W is inverter output active power S Va is inverter output ap...

Page 84: ...to select the date you want to view Confirm by pressing ENTER Inverter shows historical running information pages Scroll pages by pressing j Change to the next record by pressing h 10 6 2 Fault Recor...

Page 85: ...nfirm 10 8 Input Parameter Settings Password The parameter settings are protected by the password If you want to set the inverter s parameters you have to input the correct password 1 Press ENTER to e...

Page 86: ...h to move the cursor right and Press j to set the correct date and time Confirm settings by pressing ENTER 10 9 2 Energy Deviation Adjustment If the accumulative value of E total in the inverter is di...

Page 87: ...ssword Press ENTER Sys param Press ENTER Press j 3 Load default Press ENTER A password confirmation screen will occur Press h to move cursor right and Press j to input the password 111111 Press ENTER...

Page 88: ...ss j to set the appropriate value Confirm by Pressing ENTER Tab 10 4 Specification of Running Parameters Parameter Explanation Default Range Standby time The time from inverter initialization to inver...

Page 89: ...ctive power can be regulated by the parameter PF on the Run param screen Qt Mode The reactive power can be regulated by the parameter Q Var limits in on the Run param screen Off Mode The PF is limited...

Page 90: ...e correct country code by Press j and Press ENTER to confirm The description of country code is illustrated below Country Code Full Name Language CA Canada English US United States English Other Count...

Page 91: ...ppropriate value Confirm settings by Pressing ENTER Tab 10 5 Single stage Protective Parameter Explanation Parameter Explanation Max V grid Grid over voltage value Min V grid Grid under voltage value...

Page 92: ...frequency protection Max F grid Stage Grid over frequency f Max F time Stage Grid over frequency f tripping time Max F grid Stage Grid over frequency f Max F time Stage Grid over frequency f tripping...

Page 93: ...igned for PV strings current abnormal condition detection and arcing faults detection that can trigger the protective functions of the inverter 10 13 1 PVS Detect Settings Main Screen Press ENTER Menu...

Page 94: ...s ENTER Enter password Press ENTER Advanced Settings Press j Press ENTER AFD Settings A password confirmation screen will occur Press h to move cursor right and Press j to input the password 111111 AF...

Page 95: ...User Manual 10 Operation of LCD Display 85 If a potential problem on the AFD board is detected the self test will result in fault...

Page 96: ...60A 2 Output Side Data Nominal AC output power 30000W 36000W Max AC output power PF 1 33240W 39800W Max AC output apparent power 33240VA 39800VA Max AC output current 40A 48A Nominal AC voltage 480Va...

Page 97: ...derating 13 140 113 derating Allowable relative humidity range 0 100 no condensing Cooling method Smart forced air cooling Max operating altitude 4000m 3000m derating 13123ft 9842ft derating Display...

Page 98: ...V 88 adjustable Adjustable 0 16 to 2 88 V 110 adjustable Normal operation 110 V 120 Adjustable 0 16 to 1 V 120 0 16 11 3 Grid Over Under frequency Parameter Frequency range Hz Clearing time s 60 5 0...

Page 99: ...ly reduces the amount of power it feeds to the grid 11 5 1 Temperature related Power Derating Operating parameters such as input voltage grid voltage and power available from the photovoltaic arrays c...

Page 100: ...90 Pout W 11 5 2 Input Voltage related Power Derating The following graph shows the automatic reduction in output power when the input voltage exceeds the threshold value...

Page 101: ...ing safety warnings and instructions contained in all documents relevant to the product y Installing or operating the product under incorrect safety or protection conditions y Altering the product or...

Page 102: ...um reliability and enhanced safety Contact Information Should you have any question about this product please contact us Company Sungrow Power Supply Co Ltd Website www sungrowpower com Email info sun...

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