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User Manual

9 Troubleshooting and Maintenance

9.3

Contact Sungrow Service

Should you have any problems in operating on the inverter, please contact us:

Service hotline: +86 551 6532 7817

Email: [email protected]

We need the following information to provide you the best assistance:

Type of the inverter

Serial number of the inverter

Fault code/name

Brief description of the problem

Summary of Contents for SG10KTL

Page 1: ...SG10_12_15_20KTLV41 UEN Ver30 201412 Version 3 0 User Manual SG10KTL SG12KTL SG15KTL SG20KTL PV Grid Connected Inverter...

Page 2: ......

Page 3: ...nal information 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 installatio...

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: ...V 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 manual before any operation on...

Page 6: ...rating 12 3 Installation Flow 14 4 Unpacking and Storage 16 4 1 Unpacking and Inspection 16 4 2 Identifying Inverter 17 4 3 Delivery Contents 18 4 4 Storage of Inverter 19 5 Installing Inverter onto W...

Page 7: ...ation System 45 6 6 3 RS485 Communication Connection 46 7 Commissioning 48 7 1 Inspection before Commissioning 48 7 2 Commissioning Procedure 48 8 Disconnecting Dismantling and Disposing the Inverter...

Page 8: ...9 4 Load Default 70 10 9 5 Firmware Version 70 10 10 Running Parameter Setting 71 10 10 1 Main Screen of Run param 71 10 10 2 Reactive Power Regulation 72 10 10 3 Save P Q set 74 10 11 Protective Para...

Page 9: ...e following general safety instructions must be read and always kept in mind prior to any work All detailed work related safety warnings and notes will be specified at the critical points in correspon...

Page 10: ...er contents or if there is something missing contact the unit dealer During Installation Prior to installing the inverter onto the wall it is crucial to make certain that the inverter is not electrica...

Page 11: ...r is under voltage There is a highly unlikely risk of explosion in very specific cases of malfunction The housing will protect persons and property from such an explosion only if it is correctly seale...

Page 12: ...rrent present with appropriate testing device Keep unrelated person away A temporary warning sign and barrier must be posted to keep non related person away for any period while performing electrical...

Page 13: ...ng wrist band when handling the boards Avoid unnecessary touch with the boards during replacement Others The selected country settings can be changed by service personnel only Unauthorized alternation...

Page 14: ...ent which conforms to parameters of local utility grid and feeds the alternating current into the utility grid The intended usage of the inverter is illustrated in Fig 2 1 Inverter CANNOT be connected...

Page 15: ...1 Product Appearance Fig 2 2 Product Components Description Item Name Description 1 LCD display panel Inverter operation data viewing and parameters configuration can be performed via the LCD display...

Page 16: ...e the working status of the inverter y The current running information shown on the LCD display y Malfunction records shown on the LCD display y Inverter configuration by pressing the buttons Fig 2 4...

Page 17: ...r is not energized There is a communication error between DSP and LCD FAULT off 2 2 4 DC Switch DC switch is designed for safely disconnecting the DC current if required The inverter works automatical...

Page 18: ...utilized even in different PV installation conditions Three level inverter circuit converts the DC power into AC power which will be fed into the utility grid via five core terminals Protective circu...

Page 19: ...Parameters configuration Inverter provides various parameters configuration for optimal operation y Communication interface Standard RS485 interface for connecting other monitoring devices into the PV...

Page 20: ...h inner temperature y Power limit setting on the inverter LCD display y Grid frequency too high when the Country selection is DE or IT PV Overload Derating When the PV input power exceeds the defined...

Page 21: ...er voltage Derating Over temperature Derating Power modules over temperature may result from high ambient temperature poor ventilation or fault of fans Over temperature derating may protect the invert...

Page 22: ...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 23: ...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 24: ...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 contents or if the...

Page 25: ...ve only Actual product 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...

Page 26: ...onto concrete wall D Fastener set for installing backplate on metal frame E PV input connectors including positive and negative connectors F AC connector G Waterproof communication connector H 2 M4 16...

Page 27: ...protect against dust and moisture y The storage temperature should be always between 30 C and 85 C And the storage relative humidity should be always between 0 and 100 y It is very important to keep t...

Page 28: ...y as well as its expected efficiency and service life y Take the load capacity of the wall into account The wall such as concrete wall and metal structure should be strong enough to hold the weight of...

Page 29: ...good heat dissipation y Never install the inverter horizontally nor with a forward tilt nor with a backward tilt nor even with upside down y The inverter unit with IP65 can be installed indoors or out...

Page 30: ...reducing Shaded site of the building is preferred y Take enough space for convection into consideration during installing the inverter y For multiple inverters installation position the inverters sid...

Page 31: ...s the following instructions should be obeyed 1 Always remember the weight of the inverters 2 Grasp the equipment handles by both hands by means of handles 3 Move the unit with the help of others or t...

Page 32: ...te wall and adjust it until it is in a horizontal position Step 3 Mark the positions to drill holes using the backplate as the template Step 4 Drill holes according to the marks made before In order t...

Page 33: ...ews Fig 5 5 Installing the Inverter 5 3 2 Installing the Inverter on Metal Frame If the chosen mounting location is metal frame please follow steps below to mount the inverter Step 1 Remove the backpl...

Page 34: ...down to make sure that the two mounting ears on the back of the inverter fit perfectly with the backplate as shown in Fig 5 7 Step 7 After fit the inverter to the backplate fasten the inverter to the...

Page 35: ...d personnel can perform the wiring work Prior to any electrical connection keep in mind that inverter has dual power supplies It is mandatory for technical personnel to wear personal protective equipm...

Page 36: ...switch 5 Second Protective Earth Terminals 6 2 Simplified Electrical Connection Diagram Connecting inverter to the existing PV system includes connecting inverter to local grid and connecting inverter...

Page 37: ...cuit voltage of each PV string is 1000V B SolarInfo Logger It can be ordered from Sungrow C PC User equips this device to monitor inverter D AC circuit breaker Used as a protective device during elect...

Page 38: ...It is not allowed to connect loads between inverter and circuit breaker Residual Current Device With an integrated universal current sensitive residual current monitoring unit inside the inverter is a...

Page 39: ...e specification to avoid unintended disconnection from the grid or derating of the output power y The maximum cable lengths dependent from the cable cross section are shown in the following table avoi...

Page 40: ...TL SG15KTL to AC Grid Step 1 Unscrew the water proof terminal in the following direction Step 2 Insert appropriate size AC cables into the water proof terminal Step 3 Strip off insulation layer of all...

Page 41: ...AC Grid Step 1 Insert AC cables into cable gland and threaded sleeve into the strain relief housing Step 2 Strip off 11mm insulation layer from all AC cables Assemble crimp contacts to wires using cri...

Page 42: ...nect Step 9 Connect PE cable to the grounding electrode Where there are multiple inverters in the PV power system connect PE cables of all inverters and mounting frame of PV arrays to the same copper...

Page 43: ...gative terminal of the PV string and Earth are larger than 1Mohm 6 4 1 PV Inputs Configuration SG10 12 15 20KTL inverters have two PV input areas DC1 input and DC2 input each with its MPP tracker The...

Page 44: ...Type Total DC Power Limit for Inverter DC Power Limit for Each Input Open circuit Voltage Limit for Each Input Short circuit Current Limit for Each Input SG10KTL 10800W 5400W 1000V 25A SG12KTL 12800W...

Page 45: ...cting inverter to PV inputs the following specifications should be met Type Total DC Power Limit for Inverter Open circuit Voltage Limit for Each Input Short circuit Current Limit for Total Input SG10...

Page 46: ...tors of the same protection class can be used DC Cable Requirements Cross section Area Range Outer cable diameters Max Withstand Voltage Max Withstand Current 4 6mm2 12AWG 10AWG 6 9mm 1000V Same with...

Page 47: ...connectors for connection Order the MC4 T connectors from Sungrow or connector manufacture 6 4 3 Wiring Procedures Make sure that all the DC cables to the inverter are not live before you start the e...

Page 48: ...erminals on the bottom of the inverter For the same MPPT reverse connection of a single string is prohibited A permanent failure of the system or inverter may follow if otherwise Step 3 Plug the posit...

Page 49: ...er PV strings following the same procedures if necessary Unused DC terminals should be sealed PV Connection of Parallel Mode Connect the inverter to PV arrays as the following procedures Step 1 Manual...

Page 50: ...er Because of the transformer less design of the inverter the DC positive pole and DC negative pole of the PV arrays are not permitted to be grounded 6 5 1 Grounding System Overview All non current ca...

Page 51: ...Inverter 6 5 2 Second Protective Earth Terminals The inverters are equipped with second protective earth terminals as specified in EN 50178 Second PE Terminals There are two second PE terminals on bo...

Page 52: ...rview The inverter operation information can be transferred via its integrated RS485 interface to a PC with monitoring software such as SolarInfo Insight or to data logging device such as SolarInfo Lo...

Page 53: ...type cable A converter such as RS485 232 converter or SolarInfo Logger which converts 485 to 232 signal is needed between inverter and PC 6 6 2 Communication System For Single Inverter Where there is...

Page 54: ...iate torque Step 2 Insert connector of one cable end into RS485 in RS485 out terminal on the bottom of the inverter Make connector and RS485 terminal engage and rotate clockwise Step 3 According to th...

Page 55: ...communication connection and configure the communication parameters If there is more than one inverter to communicate with a PC or a data logger it is crucial to configure the communication parameters...

Page 56: ...erter and accessories are correctly connected 5 Cables are routed in safe place or protected against mechanical damage 6 Specification of AC circuit breaker is reasonable 7 Terminals not used undernea...

Page 57: ...preset before delivery Before country setting there is warning screen Step 6 Press j to choose country code Confirm the settings by Pressing ENTER Refer to 10 11 Protective Parameters Setting for coun...

Page 58: ...mode in the inverter by the LCD display menu see 10 13 PV Configuration Mode Setting Step 10 After configuring all parameters there will be a setting confirmation screen Check whether all above menti...

Page 59: ...external AC circuit breaker and prevent it from connecting again Step 2 Rotate DC switch to the OFF position and then turn off the upstream DC circuit break or pull off the MC4 terminal Please strictl...

Page 60: ...will be reinstalled in the future please refer to 4 4 Storage of Inverter for a proper conservation 8 3 Disposing the Inverter Users should take the responsibility for the disposal of the inverter Som...

Page 61: ...ut RUN indicator goes out 1 Disconnect AC side circuit breaker 2 Rotate the DC Switch to the OFF position 3 Check the correctness of electrical connection of inverter See 6 Electrical Connection 4 Che...

Page 62: ...k the voltage of the grid 2 If the grid voltage exceeds the permissible range of inverter protective parameters ask utility grid company for solution 3 If the grid voltage is within the permissible ra...

Page 63: ...equency is within the permissible range contact Sungrow Service Dept 014 The average grid voltage over 10 minutes is not within the permissible range 1 Wait a moment for inverter recovery 2 If the fau...

Page 64: ...PV inputs for parallel PV configuration mode 1 Wait a moment for inverter recovery 2 If the fault occurs repeatedly contact Sungrow Service Dept 036 The temperature of module is too high 1 Check whet...

Page 65: ...e Dept 049 Phase S current sampling channel fault 050 Phase T current sampling channel fault 051 Hardware Overvoltage Overcurrent protection 1 Wait a moment for inverter recovery 2 If the fault occurs...

Page 66: ...ce the fans Once a year 9 2 2 Maintenance Instruction Disconnect the inverter from the grid first and then PV arrays before any maintenance work Lethal voltage still exists in the inverter Please wait...

Page 67: ...ified electricians Step 1 Disconnect the AC side circuit breaker Step 2 Rotate DC switch to the OFF position and then turn off the upstream DC circuit break or pull off the MC4 terminal Step 3 Wait fo...

Page 68: ...inverter Step 13 Connect the four connectors and fasten them with cable ties Step 14 Assemble the plate by fastening the four screws Step 15 The inverter can work again Air Inlet and Outlet Cleaning A...

Page 69: ...ny problems in operating on the inverter please contact us Service hotline 86 551 6532 7817 Email service sungrow cn We need the following information to provide you the best assistance y Type of the...

Page 70: ...s or downwards or increase setting value Hereafter it is referred to as Press j Press more than two seconds Return to the previous menu or cancel the command Hereafter it is referred to as Press ESC P...

Page 71: ...User Manual 10 Operation of LCD Display Panel 63 10 2 Inverter Menu Structure Fig 10 1 Menu Tree English...

Page 72: ...7 Date year month date and time The energy yields displayed by the LCD panel are indicative only For the actual yields please refer to the electric energy meter Tab 10 2 Inverter State Description In...

Page 73: ...e warning information If inverter is in Fault state Press h j to view multiple Current fault information pages To know the meaning of the fault code please refer to 9 1 2 Troubleshooting of Faults in...

Page 74: ...each input Idc indicates the DC current of each input Pdc indicates the DC power of each input Indep mode is the PV configuration mode of the two PV inputs indicates the corresponding input is at wor...

Page 75: ...Press ENTER Run record Press ENTER On the Run record display press j to select the date you want to view Confirm by pressing ENTER Inverter shows historical running information pages Scroll pages by p...

Page 76: ...rd The parameter settings are protected by the password If you want to set the inverter s parameters you have to input the correct password Step 1 Press ENTER to enter into Menu screen Step 2 Press j...

Page 77: ...local time you should perform the operation time setting Otherwise the inverter data logging will fail Clock is 24 hour format Main Screen Press ENTER Menu screen Press j 3 Set param Press ENTER Ente...

Page 78: ...the protective parameters and time once the load default operation is performed Main Screen Press ENTER Menu screen Press j 3 Set param Press ENTER Enter password Press ENTER Sys param Press ENTER Pre...

Page 79: ...NTER Tab 10 4 Specification of Running Parameters Parameter Explanation Default Range Standby time The time from inverter initialization to inverter feeding power to grid 20s 20 255s Recover time The...

Page 80: ...y 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 to 1 000 and the Q Var limit...

Page 81: ...electing Q U mode Press j to enter the Run param Q U sub menu For each item setting Press h to move cursor right and Press j to set the appropriate value Confirm settings by Pressing ENTER Tab 10 6 Q...

Page 82: ...de curve 105 100 105 Hysteresis Hysteresis voltage width in 3 0 5 U1 Limit Hysteresis U2 Limit Hysteresis Fig 10 4 Reactive Power Regulation Curve in Q U Mode 10 10 3 Save P Q set On the Save P Q set...

Page 83: ...ngrow or your dealer for this password To make protective parameters setting convenient Inverter provides country code selection The protective parameters have been configured before delivery accordin...

Page 84: ...dless of the country selected Press j to select protective parameter type Press ENTER to confirm the selection If the country selection is IT Italy the Pro param menu right will show refer to the 10 1...

Page 85: ...x V grid Stage Grid over voltage U Max V time Stage Grid over voltage U tripping time Min V prot Under voltage protection Min V grid Stage Grid under voltage U Min V time Stage Grid under voltage U tr...

Page 86: ...rd Press ENTER Press j 3 Com param Press ENTER Press h to move cursor right and Press j to set the appropriate value Confirm settings by Pressing ENTER The range of communication address is 1 247 10 1...

Page 87: ...tting for Italy If the Countries selection is IT Italy the Derating Slope will display in the Run param screen When the grid frequency is between 50 3Hz and 51 5Hz inverter will decrease power accordi...

Page 88: ...nto the editing mode then the selected parameter will be shaded Press j to increase one step value Press hto decrease one step value Press ENTER to confirm the setting and exit from the editing mode T...

Page 89: ...ecrease one step value Press ENTER to confirm the setting and exit from the editing mode Tab 10 10 Italy Q U Mode Parameters Explanation Param Explanation Default Range Step V2i Grid voltage at point...

Page 90: ...aly Grid protection Recovery Value Parameter Explanation Fmax recover Inverter can start operating only when the grid frequency is below Fmax recovery The fault recovery value when the grid over frequ...

Page 91: ...oltage value Max Fgrid Grid over frequency value Min V grid Grid under voltage value Min F grid Grid under frequency value IT Stage Protective Parameter The button functions for Italy Stage parameter...

Page 92: ...ltage U Min V tempo Stage Grid under voltage U tripping time Min V rete Stage Grid under voltage U Min V tempo Stage Grid under voltage U tripping time Max F prote Over frequency protection Max F rete...

Page 93: ...50V 250 950V 250 950V 280 950V MPP voltage range for nominal power 250 800V 330 800V 380 800V 480 800V No of MPPTs 2 Max number of PV strings per MPPT DC1 DC2 3 3 Max PV input current DC1 DC2 40A 20A...

Page 94: ...default value at nominal power adj 0 8 overexcited 0 8 underexcited Protection Anti islanding protection Yes LVRT Yes AC short circuit protection Yes Leakage current protection Yes DC switch Integrate...

Page 95: ...3 VDE AR N 4105 BDEW CGC Solar Q GDW 617 Mechanical Data Dimensions W H D 648 686 246mm Mounting systerm Wall bracket Weight 50kg 50kg 50kg 55kg 11 2 Terminals and Cables Terminal Type Conductor size...

Page 96: ...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 sup...

Page 97: ...mega watt systems The vision of Sungrow is to help our customers acquire stable and clean power with minimum cost maximum reliability and enhanced safety Contact Information Should you have any proble...

Page 98: ...vance notice Sungrow Power Supply Co Ltd Add No 1699 Xiyou Rd New High Technology Industrial Development Zone 230088 Hefei P R China Post Zip 230088 Web www sungrowpower com E mail info sungrow cn Tel...

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