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User Manual

6.4

Grounding the Inverter

Because of the transformer-less design of the inverter, neither the DC
positive pole nor the DC negative pole of the PV string is permitted to be

grounded.

6.4.1 Grounding System Overview

All non-current carrying exposed metal parts of the equipment and other

enclosures in the PV power system should be grounded (e.g., PV arrays frame and

inverter enclosure).

Where there is only one inverter in the PV power system, connect “PE” cable to the

ground.

When there are multiple inverters in the PV system, they can be multi-point

grounded. Connect PE cables of all inverters and the mounting metal frames of PV
array to the equipotential cable (according to the on-site situation) to realize

equipotential connection.

Grounding of Inverter AC Side

PV Arrays 1

PV Arrays 2

PV Arrays n

Mounting Frame of PV

arrays

Grounding of PV Power System

Inverter

AC Grounding Electrode

AC Circuit Breaker

L2 L3

L2
L3

Inverter 1

Inverter 2

Inverter n

Equipotential

cable

Fig. 6-2

Grounding for Inverter

Содержание SG36KTL-M

Страница 1: ...SG36KTL M UEN Ver16 201901 Version 1 6 User Manual SG36KTL M PV Grid Connected Inverter...

Страница 2: ......

Страница 3: ...to technical personnel who is responsible for inverter installation and commissioning in the PV power system and inverter owner who will perform daily LCD operation How to Use This Manual Read the man...

Страница 4: ...esult in minor or moderate injury NOTICE indicates a situation which if not avoided could result in equipment or property damage NOTE indicates additional information emphasized contents or tips to he...

Страница 5: ...2 3 1 Principle Description 9 2 3 2 Functions Description 10 2 3 3 Derating 11 3 Installation Flow 13 4 Unpacking and Storage 15 4 1 Unpacking and Inspection 15 4 2 Identifying Inverter 16 4 3 Delive...

Страница 6: ...view 43 6 5 2 Communication System 44 6 5 3 RS485 Communication Connection 45 7 Commissioning 47 7 1 Inspection before Commissioning 47 7 2 Commissioning Procedure 47 8 Disconnecting Dismantling and D...

Страница 7: ...tal Energy Deviation Adjustment 70 10 9 4 Load Default 71 10 9 5 Checking Firmware Version 71 10 10 Running Parameter Setting 71 10 10 1 Main Screen of Run param 71 10 10 2 Active Reactive Power Param...

Страница 8: ...ation 85 10 12 Communication Parameter Setting 85 10 13 Advanced Parameters Setting 86 10 13 1 PVS Detect Settings 86 10 13 2 10min Max V 87 10 13 3 Grid Unbalance 88 11 Appendix 89 11 1 Technical Dat...

Страница 9: ...always kept in mind prior to any work All detailed work related safety warnings and notes will be specified at the critical points in corresponding chapter All installation and electrical work must o...

Страница 10: ...o 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 order to ensure that the equipment int...

Страница 11: ...persons and damage to the device Arc flash fire or explosion may follow if otherwise and Sungrow will hold no liability for the damages followed At least the following improper operations can cause t...

Страница 12: ...owing procedures Disconnect inverter from the utility grid side first and then PV arrays Wait at least ten minutes until the inner capacitors discharge completely Verify that no voltage or current pre...

Страница 13: ...quipment or more recent revision of the manual which is clearly and thoroughly understood Others All safety instructions warning labels and nameplate on the inverter body Must be clearly visible Must...

Страница 14: ...g current which conforms to parameters of local utility grid and feeds it into the utility grid The intended usage of the inverter is illustrated in Fig 2 1 Inverter CANNOT be connected to the PV modu...

Страница 15: ...onnected to an appropriate section of PV inputs and on the AC side they connected in parallel to the grid 2 2 Product Description 2 2 1 Model Description The model description is as follows SG 36K TL...

Страница 16: ...signed for holding the unit when transporting installing or servicing 6 Air outlet Exit of hot air during the inverter operation 7 Mounting ear It is used for hanging inverter onto the backplate 8 DC...

Страница 17: ...ption RUN on Inverter is feeding AC power to the utility grid FAULT off RUN off A fault happens or protection function triggers FAULT on RUN off Inverter is not energized or there is a communication e...

Страница 18: ...n via human computer interface LCD display panel The principle design is illustrated below Fig 2 5 Main Circuit Diagram of SG36KTL M 2 3 2 Functions Description Inverter functions can be grouped as th...

Страница 19: ...temperature and power modules temperature Power limit setting on the inverter LCD display or remote dispatch Grid frequency too high when the Country region selection is DE or IT Power Limit Setting U...

Страница 20: ...he nominal power 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 Derating Once the grid voltage i...

Страница 21: ...ng the inverter Unpacking and Inspection Read User Manual Mounting the Inverter Electrical Connection Check before Commissioning Commissioning Start Success End Troubleshooting Yes No 1 Install Immedi...

Страница 22: ...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...

Страница 23: ...the inner contents for damage after unpacking Check the completeness of delivery contents according to the inner packing list In case any damage to the packaging or the inner contents or if there is...

Страница 24: ...r which are available and identified by Sungrow Fig 4 2 Nameplate of Inverters Image shown here is for reference only Actual product you receive may differ Item Description 1 SUNGROW logo and product...

Страница 25: ...wall C Documents Documents include quality certificate packing list product test report and quick user manual D Fastener set Six units It is used for fastening backplate onto metal frame E Fix screws...

Страница 26: ...g should be sealed by adhesive tape The unit must be stored in a clean and dry place to protect against dust and moisture Relative temperature 40 70 Relative humidity 0 95 If one inverter is stacked o...

Страница 27: ...t The wall concrete wall or metal frame should be strong enough for the weight of the inverter over a long period Install the inverter in a convenient location for electrical connection operation and...

Страница 28: ...ng forward or upside down Leaning forward Up side down Ground Leaning backward 450mm 17 7inch 0 75 If the included angle between the installation site and the plumb line is greater than 75 install the...

Страница 29: ...er derating if the temperature is too high The relative humidity range of the installation site is 0 100 Ensure there is enough space for convection The fans are maintained on the left side of the inv...

Страница 30: ...the weight of the inverters Grasp the equipment handles by both hands by means of handles Move the unit with the help of others or the lifting device Do not release the equipment unless it has been se...

Страница 31: ...ed to crimp the OT terminal Heat gun Used to heat the heat shrink tubing Multimeter Measurement range 1100Vdc Used to measure the voltage Wrench for MC4 terminal Used for fastening and loosening the M...

Страница 32: ...tal Frame Step 1 Remove backplate and fasteners from the packaging Step 2 Choose the best installation site according to above requirements Place the backplate onto the chosen metal frame and adjust i...

Страница 33: ...F D A B C Install backplate E Step 6 Lift up the inverter above the backplate and then slide down to make sure that the recesses on the back of the inverter fit perfectly together with the backplate...

Страница 34: ...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 to avoid electrical sh...

Страница 35: ...up inverter above the backplate and then slide down to make sure that the recesses on the back of the inverter fit perfectly together with the backplate Step 7 After fit the inverter to the backplate...

Страница 36: ...dard AS NZS 3000 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...

Страница 37: ...own here is for reference only Actual product you receive may differ No Description No Description 1 DC switch 6 Plinth of DC SPDs Surge Protection Devices 2 Configuration circuit board 7 PV input ter...

Страница 38: ...nverters to use the same circuit breaker It is not allowed to connect loads between inverter and circuit breaker Residual Current Device With an integrated universal current sensitive residual current...

Страница 39: ...mers The transformer for the inverter can be a distribution transformer however it must be designed for the typical cyclical loads of a PV system load in the day and possibly no load at night The tran...

Страница 40: ...pes include system short circuit grounding fault voltage drop and etc Ambient temperature relative humidity altitude air quality and the relevant indexes should be taken into account at all times The...

Страница 41: ...M4 If AC side has no anti PID function or other special requirements please ground the grid neutral point or the AC output terminals N and PE may be connected AC Cable Requirements Consider the follow...

Страница 42: ...inet Step 3 Strip off AC cables as shown below For flexible cables stranded wires use cold pressing terminal lugs plastic sleeves The cross section of the AC cable conductor must be sized in order to...

Страница 43: ...ction the cables inside the lower part of the device should be bent to be surplus in length In this way cable dropping or loosening which can cause arc or other problems impairing functionality of the...

Страница 44: ...n cabinet is equipped with positive fuse and no negative fuse During system design configure or not configure the external fuse to the negative cables of the string according to the local regulations...

Страница 45: ...more attention should be paid to the open circuit voltage of PV strings when designing at the lowest ambient temperature TakeYL250P 29bPV cells for example Item Parameter PV cell type YL250P 29b Powe...

Страница 46: ...nectors or the connectors of the same protection class can be used DC Cable Requirements Tab 6 1 DC Cable Requirements Cross section Area Range Outer cable diameters Max Withstand Voltage Max input cu...

Страница 47: ...N m Crimp Contact Positive Insulator Cable Gland Negative Insulator Crimp Contact Cable Gland For further assembly and connection instruction please visit the webpage of the device manufacturer Step 6...

Страница 48: ...e same MPPT reverse connection of a single string is prohibited A permanent failure of the system or inverter may follow if otherwise Step 9 Insert the positive and negative DC connectors into the inp...

Страница 49: ...there is only one inverter in the PV power system connect PE cable to the ground When there are multiple inverters in the PV system they can be multi point grounded Connect PE cables of all inverters...

Страница 50: ...this second PE terminal cannot replace the connection of the PE terminal of the AC cables Make sure the two PE terminals are all grounded reliably Cable Connection Fig 6 4 Second PE connection Connect...

Страница 51: ...terminal blocks are on the configuration circuit board If a 120 terminating resistor is to be connected between the communication cable A and B connect the terminal resistance by using the dip switch...

Страница 52: ...nly out No 120ohm 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 te...

Страница 53: ...nnection Terminating Resistor n 15 n 15 Inverter 1 Only out No 120ohm Yes 120ohm Inverter 2 n 1 In and Out A B GND No 120ohm Inverter n In and Out A B GND No 120ohm Yes 120ohm 6 5 3 RS485 Communicatio...

Страница 54: ...unication cable and the gland inside the lower part of the cabinet by fireproofing mud Step 8 If there is no other connection procedure recover and fix the front cover of the connection cabinet Step 9...

Страница 55: ...s 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 are...

Страница 56: ...ction Parameter Setting for country region code explanation If the inverter is installed where the country region code is not included please choose item Other and manually set the protective paramete...

Страница 57: ...Grid codes page special for Thailand will appear Press to select grid code and press ENTER to confirm If the country code set as ZAF a Grid codes page special for The Republic of South Africa will ap...

Страница 58: ...odbus param Addr 001 Step 10 After configuring all parameters there will be a setting confirmation screen Check whether all above mentioned parameters are correct Confirm by press ENTER Cancel by Pres...

Страница 59: ...all the PV string inputs Please strictly follow the sequence of the above procedures Inverter will not work normally if otherwise Step 3 Wait about ten minutes until the capacitors inside the inverte...

Страница 60: ...posing the Inverter Users should take the responsibility for the disposal of the inverter Some parts and devices in the inverter such as the LCD display batteries capacitors may cause environment poll...

Страница 61: ...eck whether DC input voltage exceeds the inverter start voltage of inverter 5 If all above conditions are OK please contact with Sungrow Fault indicator is lit 1 A fault is not removed yet 2 Perform t...

Страница 62: ...05 The grid voltage is too low 1 This is a short term fault due to grid condition Wait a moment for inverter recovery 2 If the fault still exists please contact Sungrow Service Dept 006 The AC output...

Страница 63: ...the fault occurs repeatedly contact Sungrow Service Dept 016 The AC output overloads 1 Wait a moment for inverter recovery 2 If the fault occurs repeatedly contact Sungrow Service Dept 017 Unbalance b...

Страница 64: ...ation resistance is low ISO flt 1 Wait a moment for inverter recovery 2 If the fault occurs repeatedly contact Sungrow Service Dept 040 AC or DC overcurrent fault or DC overvoltage fault 1 Wait a mome...

Страница 65: ...eeding into the grid Contact Sungrow Service Dept 075 Solar irradiation is not sufficient for inverter operation 1 Wait for higher irradiation 2 If this recurs at medium irradiation check the PV syste...

Страница 66: ...r inlet is ok Clean the air inlet and outlet when necessary Six months to a year it depends on the dust contents in air Fans Check whether there is crack of the fan blade Check whether there is any ab...

Страница 67: ...inverter over the backplate with the help of others and then remove it from the wall Step 6 Place the inverter onto the platform Step 7 Unscrew the cover plate of the fan Step 8 Clasp the groove near...

Страница 68: ...5 Observe the string fuse assignment and check the fuse conductivity using the multimeter A non conductive fuse indicates a fault in the affected string Step 6 Check the affected string by installer...

Страница 69: ...rds or downwards or scroll among set values Hereinafter it is referred to as Press Press for more than two seconds Return to the previous menu or cancel the command Hereinafter it is referred to as Pr...

Страница 70: ...s param Run param Pro param Com param Run param P Q param Time param Derating param Iso param LVRT param Com param Addr 001 Time Energy adj Sys param Firmware version Load default Languages kW h kW h...

Страница 71: ...ode inverter will wait within the Standby duration set by user refer to 10 10 1 Main Screen of Run param Stop Inverter is stopped Key stop Inverter will stop operation by manual stop through LCD menu...

Страница 72: ...ng state 10 4 Adjust Contrast Step 1 Press ESC to enter into the contrast adjustment screen 50 Step 2 Press to increase the setting value and press to decrease the value Step 3 Press ENTER to confirm...

Страница 73: ...c A 6 0 6 0 6 0 Pac W 0 0 0 F Hz 0 00 0 00 0 00 CO2 reduce Total CO2 emission reduction due to the inverter E month The energy generated in this month h Total Total running hours of the inverter T tod...

Страница 74: ...Checking History Event Records Main Screen Press ENTER Menu Press His inform Press ENTER Press His event Press ENTER On the Evt record interface scroll pages forwards by pressing and press to scroll...

Страница 75: ...is inform Press ENTER Press 3 Energy record Press ENTER LCD display shows the energy records User can view various energy records by pressing power curve daily energy histogram daily energy histogram...

Страница 76: ...the latest 90 years t E KWh 300000 2000 Annual energy histogram 2007 2014 180000 60000 P1 2 2015 190000kWh 10 7 Starting Stopping Main Screen Press ENTER Menu Press 2 Start Stop Press ENTER Press to c...

Страница 77: ...System Parameter Setting There are various user settable system parameters You can set the system parameters after entering the correct password 10 9 1 Language Setting Main Screen Press ENTER Menu Pr...

Страница 78: ...r computer or other channel communicated with the device For details please refer to the time calibration description in the inverter communication protocol Please contact Sungrow if there is still ti...

Страница 79: ...lt Load default Confirm resume setting 10 9 5 Checking Firmware Version Main Screen Press ENTER Menu Press 3 Set param Press ENTER Enter password Press ENTER Sys param Press ENTER Press 4 Firmware ver...

Страница 80: ...N set the active power rise rate 100 min 8 100 min Power Decline When Rate limit is ON set the active power decline rate 6000 min 8 6000 min Fault slowup Set the power rise rate when a fault is remove...

Страница 81: ...ctive power for grid recovery OFF OFF ON Derating param Set the Derating param to OFF or ON If it is ON inverter will operate with power derating when grid frequency exceeds the set value OFF OFF ON I...

Страница 82: ...itch Regulation Mode Explanation Pf The reactive power can be regulated by the parameter PF Power Factor Qt The reactive power can be regulated by the parameter Q Var limits in Off The PF is limited t...

Страница 83: ...Tab 10 6 Q P Mode Parameters Explanation Parameter Explanation Default Range Upper PF Cap Power factor of point P1 in the Q P mode curve 1 0 9 1 Lower Power Output power of point P1 in the Q P mode c...

Страница 84: ...pper Q Sn Cap 050 0 Lower U Limit 095 0 Upper U Limit 115 0 Tab 10 7 Q U Mode Parameters Explanation Parameter Explanation Default Range Lower Q Sn Ind Inductive Q Sn value of point P4 in the Q U mode...

Страница 85: ...ges with the output power of the inverter Select Q P mode and Press to enter into the Run para Q P sub menu Press to move the cursor Press to enter the editing mode then the selected parameter will be...

Страница 86: ...aly Thailand Q U Mode The reactive power ratio changes with the grid voltage Select Q U mode and Press to enter the Run para Q U sub menu Press to move the cursor Press to enter the editing mode then...

Страница 87: ...i V1i V1s V2s Pin Pout A Default B A B C D A B C D Capacitive Inductive Capacitive Inductive Fig 10 6 Reference Reactive Power Regulation Curve in IT TH Q U Mode 10 10 5 Save P Q set On the Save P Q s...

Страница 88: ...T tolera volt 00 0V LVRT T2 0 00S 10 10 8 HVRT Parameter Main Screen Press ENTER Menu Press 3 Set param Press ENTER Enter password Press ENTER Press Run param Press ENTER Press 3 HVRT param Press ENTE...

Страница 89: ...am ISO pro value 30k ISO ON OFF 10 11 Protection Parameter Setting Protection parameters are designed for the threshold value that can trigger the protection function of the inverter Main Screen Press...

Страница 90: ...0 10 Country region code description Country region Code Country region Language GB Great Britain English DE Germany German FR France French IT Italy Italian ES Spain English AT Austria German AU Aust...

Страница 91: ...code The Pro Stage interface will appear You may choose Single stage or Multi stage Press to choose single stage or Multi stage and press ENTER to confirm Pro Stage Single stage Multi stage 10 11 2 Si...

Страница 92: ...rameters Explanation Parameter Explanation Max V prot Over voltage protection Max V grid Stage Grid over voltage U Max V time Stage Grid over voltage U tripping time Max V grid Stage Grid over voltage...

Страница 93: ...cy Fmin recover Min protection recovery frequency 10 11 5 Protection Parameter Confirmation The setting confirmation interface will appear once the protection parameters are input Press ENTER to confi...

Страница 94: ...word Press ENTER Press 4 Advanced settings Press ENTER 10 13 1 PVS Detect Settings Main Screen Press ENTER Menu screen Press 3 Set param Press ENTER Enter password Press ENTER Press 4 Advanced setting...

Страница 95: ...wn on the main screen You can perform the PVS Detect Reset function to re detect the PV input strings number PVS Detect is only valid in the machine that is equipped with this feature 10 13 2 10min Ma...

Страница 96: ...ional You can purchase the device equipped with this optional function For details please consult Sungrow 10 13 3 Grid Unbalance Main Screen Press ENTER Menu screen Press 3 Set param Press ENTER Enter...

Страница 97: ...ax DC Short circuit current 96 A 36 A 36 A 24 A Max inverter backfeed current to the array 0A Output AC Nominal AC power at 50 C 36000 W Max AC output power at PF 1 at 45 C 36000 W Max AC apparent pow...

Страница 98: ...00 m 3000 m derating Display Communication Graphic LCD RS485 DC connection type MC4 Max 6 mm AC connection type Screw clamp terminal Max 50 mm Compliance IEC 62109 IEC 61727 IEC 62116 IEC 60068 IEC 61...

Страница 99: ...hout authority The product faults due to operating attached or neighboring devices beyond allowed limit values Damages caused by irresistible natural environment The use of supplied software produced...

Страница 100: ...power com Australia Sungrow Australia Group Pty Ltd Sydney 61 2 9922 1522 service sungrowpower com au Brazil Sungrow Do Brasil Sao Paulo 55 11 2366 1957 latam service sa sungrowpower com France Sungro...

Страница 101: ...iland Sungrow Thailand Co Ltd Bangkok 66 891246053 service th sungrowpower com Spain Sungrow Ib rica S L U Navarra service spain sungrow co Romania Service Partner Elerex 40 241762250 service romania...

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