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12.3.4 Cleaning the Foundation

The foundation is designed with maintenance entry. Enter the foundation to check the

cleanness periodically. Use a vacuum cleaner to clean the foundation if necessary.

12.3.5 Checking and Cleaning the Air Inlets/outlets

12.3.5.1 Air Inlets

Brriie

eff IIn

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The air inlets are located at the top of the inverter. It is recommended to clean the air

inlet regularly, to avoid blocking.

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urre

Clean the air inlets with a vacuum.

12.3.5.2 Air Outlets

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The lower air outlet is located at the lower part of the inverter. It is recommended to

clean the filter screen of the air outlet regularly.

System Manual

12 Routine Maintenance

Summary of Contents for SG2500HV-30

Page 1: ...nv ve er rt te er rS Sy ys st te em m M Ma an nu ua allS SG G2 25 50 00 0H HV V_ _3 31 12 25 5H HV V_ _ 3 34 40 00 0H HV V 3 30 0_ _3 31 1_ _3 32 2 S SE EN N V Ve er r1 15 5 2 20 02 21 10 06 6 SG2500H...

Page 2: ......

Page 3: ...ault Protection 7 2 2 5 Live Line Measurement 7 2 2 6 Measuring Instrument 7 2 2 7 Volt free Operations 8 2 2 8 ESD Protection 8 2 2 9 LCD Parameter Setting 8 2 2 10 Sand and Moisture Protection 8 2 2...

Page 4: ...ite 26 5 3 2 Foundation Requirements 27 5 3 3 Recommended Foundation Construction Plan 27 5 3 4 Other Precautions 28 5 4 Removing the Sealing Tapes 29 5 5 Installing the Ventilation Cover optional 29...

Page 5: ...ecking PV Array 50 7 3 4 Checking Grid Voltage 51 7 4 Preparation before Starting 52 7 5 Starting the Device 52 7 6 LCD Parameter Setting 52 7 7 Completing Commissioning 52 8 Starting Stopping 54 8 1...

Page 6: ...nning Parameters 66 9 13 3 Protection Parameters 66 10 Main Functions 67 10 1 Operation Mode 67 10 1 1 Mode Change 67 10 1 2 Operation Mode Description 67 10 2 Active Power Limitation 69 10 2 1 Introd...

Page 7: ...l 90 12 3 Cleaning the Inverter 94 12 3 1 Introduction 94 12 3 2 Cleaning Interval 94 12 3 3 Cleaning the Internal Dust 94 12 3 4 Cleaning the Foundation 95 12 3 5 Checking and Cleaning the Air Inlets...

Page 8: ......

Page 9: ...erter Delivery Delivery and inspection after receiving the inverter Installation Mechanical transport installation and electrical connection of the inverter Commissioning Safety notices and commission...

Page 10: ...especially in the installation and commissioning of electrical devices Capable of coping with the dangerous and emergency situations during the installation and commissioning Familiar with the country...

Page 11: ...rotective earth Earthing securely to ensure personal safety When working on the device wear hearing protection 1 5 How to Use this Manual Read this manual and other related documents before transporti...

Page 12: ...4 The foregoing devices are expressed in the abbreviation form in this document unless otherwise specified 1 About This Manual System Manual...

Page 13: ...is shown in the following figure N No o N Na am me e A PV array B PV array combiner box C Inverter D Transformer E Utility grid Installation of the inverter not in compliance with the description in...

Page 14: ...it is safe to do so All installations and operations on the inverter must be in full accordance with the national and local regulations and standards 2 2 2 Manual Storage Product manuals are an indisp...

Page 15: ...d fault before performing operation and take proper protective measures 2 2 5 Live Line Measurement High voltages are present inside the device Death can result from burning and electric shock due to...

Page 16: ...PCB Observe all the ESD related safety instructions Wear proper personal protective equipment PPE such as wrist strap 2 2 9 LCD Parameter Setting Some settable parameters on the LCD are closely relate...

Page 17: ...rsons are required until the operation is performed Proper field rescue facilities are required since most PV stations are installed in places far away from the urban areas Take the followings into co...

Page 18: ...convenient place near the device for future reference during installation operation maintenance and troubleshooting of the device All the descriptions in this manual are based on the standard inverte...

Page 19: ...the front door of the inverter As shown in the figure below the LED indicators are at the upper part the color liquid crystal LCD touchscreen is at the middle part and the emergency stop button is at...

Page 20: ...tt to on n When an emergency occurs the DC and AC circuit breakers are disconnected automatically after pressing the emergency stop button After the fault is removed release the emergency stop button...

Page 21: ...drawn from the top of the inverter and hot air is exhausted from the bottom of the inverter 3 2 Interior Design of the Inverter 3 2 1 Internal Components The figure below shows the top view of the ma...

Page 22: ...ludes AC circuit breakers and RS485 communication terminals C Air outlets 3 2 2 Internal Devices of the Inverter The inverter contains the DC cabinet the module cabinet the AC cabinet The DC cabinet t...

Page 23: ...ection area while the lower part is for negative cable connection E DC maintenance switch Disconnect the switch before maintaining DC cabinet components A AC C C Ca ab biin ne et t N No o N Na am me e...

Page 24: ...AC circuit breakers can be used together with a micro motor When there is the power supply on the AC side of the inverter the energy can be stored to the breaker through this motor When there is no po...

Page 25: ...ED Never manually connect the AC circuit breaker when the AC side carries voltage Switch off Press the Push OFF button on the breaker panel to switch off the breaker After the breaker is switched off...

Page 26: ...u ua an nt tiit ty y N No ot te e A Inverter 1 B Enclosed documents 1 System manual delivery inspection report certification and warranty card C Door keys of inverter 1 Keys to monitor window 1 Keys o...

Page 27: ...rt Damages The inverter has been strictly inspected and tested before delivery Despite robust packaging the cabinet or internal devices may be damaged during transport Therefore once receiving the inv...

Page 28: ...too low heat the inverter internal devices Temperature 40 C 70 C Relative humidity 0 95 and non condensation Store the inverter on a dry clean and solid ground with sufficient load bearing capacity T...

Page 29: ...pliances to be used during transport should be maintained beforehand The inverter must be transported by qualified personnel Qualified personnel are those who have been trained especially in safety op...

Page 30: ...rters are transported in addition to fixing the top and bottom of the cabinets to the transportation vehicle ropes are also needed to connect the lifting rings between the cabinets 5 Mechanical Instal...

Page 31: ...ompt instructions on the bottom of the inverter An additional traction vehicle may be required for uphill downhill road transport Anything which may hinder the transport like trees cables or the like...

Page 32: ...g The following figure illustrates the hoisting operations Circle A indicates the work areas of the crane Anybody standing inside the circle B is prohibited for safety considerations 5 2 2 Hoisting Du...

Page 33: ...d both should be 4000kg When the wire rope is selected the tensile strength of the wire rope 1 Strength not less than 1670MPa wire diameter not less than 24mm Beyond the scope of supply Lifting rope 2...

Page 34: ...safety rules may void pertinent warranty claims from Sungrow 5 3 Foundation 5 3 1 Selection of Installation Site When selecting the installation site consider the following requirements at least The...

Page 35: ...ould be firm enough The foundation must be suitable for the weight of the inverter The foundation should be higher than the ground on site to prevent the rain from damaging the base or penetrating int...

Page 36: ...platform 5 3 4 Other Precautions After fixing the inverter should be fully welded with the pre embedded channel steel A drainage system should be designed on the installation site to prevent the inver...

Page 37: ...The operations described in this section are only applicable to the models that ordered the ventilation cover I In ns st ta alllla at tiio on n P Pa ar rt ts s P Pr re ep pa ar ra at tiio on n N No o...

Page 38: ...3 Take out the C shaped plate and fix the plate to the bottom of the inverter step 4 Reinstall the bottom cover of the inverter During installation M6x16 screw are used for tightening and the tighten...

Page 39: ...31 A A B B C C D D E E 1 000 2 500 2 500 2 500 2 500 Unit mm System Manual 5 Mechanical Installation...

Page 40: ...pposedly voltage free may carry lethal voltage Accidental touch may cause serious damage Make sure there is no system ground fault before operation and take proper protection measures Observe all the...

Page 41: ...rform the electrical connection Professional electricians should meet the related requirements listed in2 Safety Instructions in this manual Sungrow shall not be held liable for any personal injury or...

Page 42: ...asurement instrument Ground and short circuit whenever necessary Cover possible live parts to avoid accidental contact 6 2 Preparation before Electrical Connections Electrical connections between devi...

Page 43: ...ng schemes are provided for reference F Fu ur rt th he er r O Op pe er ra at tiio on ns s When performing cable connection take corresponding measures to protect the cables from being scratched or dam...

Page 44: ...Circuit Diagram N No o N Na am me e A DC input B AC output C External communication port D DC cabinet E Module cabinet F AC cabinet 6 3 2 Cable Specifications Choose cables according to the rules bel...

Page 45: ...ity of the cable Check the PV array for possible ground fault Open circuit voltage of the PV array should not exceed the max DC voltage of the inverter The inverter may be damaged if otherwise If a gr...

Page 46: ...tive cable connection area DC DC negative cable connection area C Ca ab blle e R Re eq qu uiir re em me en nt ts s The maximum cross sectional area of the aluminum copper cable is 400mm2 Fasten the wi...

Page 47: ...ipped cable inside the cable lug 2 Tighten the cable lug with relevant tools Crimp it at least twice step 4 Wrap the heat shrink tubing 1 A tubing with length 2cm longer than the depth of the cable lu...

Page 48: ...am me e N No o N Na am me e A Copper bus D Flat washer B Copper aluminum adapter terminal E Spring washer C Bolt F Nut 3 Fasten the bolts with screwdriver or spanner Incorrect connection sequence may...

Page 49: ...out only after receiving approval from the distribution utility as required by national and state interconnection regulations Strictly follow all the instructions when connecting Strictly follow all d...

Page 50: ...S St te ep ps s Connect the copper bus to the the transformer side by using M12 55 bolts and the torque is 60 70N m N No o N Na am me e N No o N Na am me e A Nut D Copper bus B Spring washer E Copper...

Page 51: ...s of the box 4 Fix the copper bar inside the connection box to the copper bar on the cabinet tighten with the bolt M12x55 and the tightening torque is 60 70N m Strictly observe the direction of the co...

Page 52: ...ble lug 2 Tighten the cable lug with relevant tools Crimp it at least twice step 4 Wrap the heat shrink tubing 1 A tubing with length 2cm longer than the depth of the cable lug is recommended 2 Wrap t...

Page 53: ...cabinet as shown in the figure below N No o D De es sc cr riip pt tiio on n A RS485 communication port B Ethernet port On site perform cable connection according to internal terminal markings 6 7 Grou...

Page 54: ...al ground connection Perform the external grounding according to on site situation and instructions of the plant staff The grounding resistance should be no more than 4 The grounding resistance should...

Page 55: ...er rs siio on n o of f A AC C c co on nn ne ec ct tiio on n a at t t th he e b bo ot tt to om m 1 After the wiring re install the left and right covers of the AC connection box Fastening bolt specific...

Page 56: ...ha ap pe ed d A An ng glle e S St te ee ell If the foundation is uneven and the AC connection box is not fixed on the foundation smoothly it can be improved by adjusting the height of the four L shap...

Page 57: ...inverter Grid connection of the inverter can be performed only after receiving approval from the local utility grid company and by qualified personnel When the inverter is operating make sure there ar...

Page 58: ...3 1 Checking the Cable Connection Check cables for any possible damages or cracks Check that all cables are connected securely according to the cable connection diagram Adjust the cable connection if...

Page 59: ...the device when the PV array output status is stable The PV field circuit fault module fault or module numbers deviation in certain array cable damages or connection looseness may cause the voltage d...

Page 60: ...ter through the touch screen step 4 Manually close all DC switches inside the DC cabinet step 5 Perform the start operation through the touch screen and the inverter starts grid connected operation E...

Page 61: ...inverter is completed The inverter operates normally After successful commissioning the inverter will be put into operation When the inverter is operating make sure there are no flammable materials o...

Page 62: ...ored for more than half a year in the required storage environment a thorough and careful inspection is necessary before the inverter is powered on 8 1 2 Start Steps When the foregoing conditions are...

Page 63: ...3 Disconnect the AC and DC maintenance switches step 4 Disconnect the inverter downstream switches step 5 Disconnect the inverter upstream switches step 6 The inverter stops running E En nd d Never d...

Page 64: ...mergency or a fault occurs Under normal conditions stop the inverter via the stop instruction on the LCD panel Press the emergency stop button immediately in case of emergency to make to ensure a time...

Page 65: ...heck the button cells on the back of the LCD panel and replace them if necessary 9 2 Default Screen 9 2 1 Initialization The LCD is initialized and then enters into the starting menu The initializatio...

Page 66: ...creensaver If no operation has been performed on the screen for more than 5 minutes the backlight will go off Tap the screen to activate the backlight so that the latest interface reappears 9 3 Overvi...

Page 67: ...wn below except for the default menu N No o D De es sc cr riip pt tiio on n A Title bar The first line on the top indicates the present success rate of communication The left side of the second line i...

Page 68: ...n n F Fu un nc ct tiio on n Backspace key delete the digit input Clr Clear the digitals input Esc Escape and close the keypad Enter Confirm the password entered Max Min The maximum and minimum value c...

Page 69: ...guage by tapping the language button By tapping the button the language will switch among English Chinese and the like The language displayed on the button is the present display language 9 6 Setting...

Page 70: ...ill be cleared at the beginning of a new day E E h hiis st to og gr ra am m The histogram shows the present day in histogram Proceed as follow to view the running information step 1 Tap Function from...

Page 71: ...Tap Function from the default menu step 2 Tap History information and enter into the history information sub menu step 3 Tap his alarm and enter into the history alarm sub menu Tap Prev or Next to tu...

Page 72: ...through the LCD screen in either of the following manners Tap Start Stop on the default menu Tap Start Stop from the Function menu Start or stop the inverter by tapping the start stop button on the sc...

Page 73: ...nd DSP are shown at the bottom of the page E En nd d 9 13 Parameters of LCD 9 13 1 Communication Parameters Improper communication parameter configuration may lead to communication failure Follow stri...

Page 74: ...parameter by tapping the pop up keypad and tap ENTER to confirm setting Tap Prev or Next to turn pages up or down E En nd d 9 13 3 Protection Parameters S Se et tt tiin ng g P Pr ro ot te ec ct tiio o...

Page 75: ...d the upstream and downstream connections are disconnected The inverter is therefore electricity free I In niit tiia all S St ta an nd db by y When switches of the upstream and downstream devices are...

Page 76: ...the fault type with the Fault indicator on until the fault is removed After the fault is removed the inverter reverts to R Ru un n mode If the fault is unrecoverable stop the inverter and perform main...

Page 77: ...Grid maintenance Grid management 10 2 2 How to Realize Power Limitation Improper parameter configuration may affect the normal operation of the inverter Only authorized personnel can configure these p...

Page 78: ...e QU mode the reactive power changes with the grid voltage V auto adjust Voltage automatic adjusting by setting the V auto adj ref V auto adj hysteresis QP mode the PF changes with the output power of...

Page 79: ...up pp po or rt t During LVRT power station should feed reactive current to the power system as per requirements For a station whose 500kV or 750kV voltage is stepped up from the 220kV or 330kV voltag...

Page 80: ...f fiig gu ur re e 1 10 0 2 2 High voltage withstand requirements Note T1 T2 U1 and U2 are all settable parameters Sungrow s inverter meets the abovementioned requirements 10 6 MPPT Maximum Power Point...

Page 81: ...system insulation resistance in real time If low resistance is detected it will send alarm at the first time to remind the user and prevent potential hazards 10 8 2 Simple Troubleshooting Regardless o...

Page 82: ...inverter still feeds power to the public grid death or injury may occur to the maintainers during maintenance In the event of grid fault if the inverter still feeds power to the public grid a surge cu...

Page 83: ...temperature is detected DSP will send instruction to stop the inverter 10 9 8 Internal Over temperature Protection The inverter is equipped with high precision thermal sensor to monitor the internal t...

Page 84: ...me manufacturer and with the same model number The model number can be acquired from the marking of the inverter or the component itself If otherwise contact Sungrow If the components need to be repla...

Page 85: ...Minor Some components are faulty but the inverter can still feed power to the grid Warning Functions of the inverter are normal but the output power drops due to external factors The fault severity of...

Page 86: ...erature inside the control cabinet Major 1 Check the grid voltage and inspect whether the grid voltage harmonic is normal 2 Check whether the fans operate normally 3 Check the AC filtering system and...

Page 87: ...h a thermodetector whether the present ambient temperature is within the permissible range of the module 2 Check that the air inlets of the inverter and inverter are not obstructed Replace the filters...

Page 88: ...er power outage occurs on the AC side 3 Check whether the AC circuit breakers of the module are connected Ctrol power supply flt The control power supply is abnormal Major 1 Check whether the control...

Page 89: ...tact AC SPD flt The SPD on the AC side of the module is faulty Major 1 Refer to the measure for DC SPD flt 2 Check whether the micro circuit breaker connected in series to the SPD is disconnected 3 If...

Page 90: ...I leakage pro The sampling value of the AC leakage currents exceeds the protective threshold Major 1 Check whether the AC cables are damaged 2 If the LV side of the transformer is connected in the Y t...

Page 91: ...er AC switches are damaged 3 Check whether AC switches are connected disconnected normally 4 Check AC switches for conductivity with a multimeter Radiator over temp The temperature of the heat sink in...

Page 92: ...dusty Replace the filters when necessary Anti PID power fit Anti PID power supply is abnormal Minor 1 Check the insulation of AC cables 2 Check AC SPD 3 Check the neutral point on the LV side of the...

Page 93: ...d are securely fastened DC fuse abnorm al DC fuses of the inverter are abnormal Minor Check whether the DC fuse have blown If so contact Sungrow and replace the fuses Branch Fuse flt Branch fuses of t...

Page 94: ...ures for Branch breaker flt Check whether the DC switch is connected I leakage pro The sampling value of the AC leakage currents exceeds the protective threshold Major 1 Check whether the AC cables ar...

Page 95: ...he communication of the tributary board inside the inverter is abnormal Minor Contact Sungrow DC Sensor err DC sensors of the inverter are abnormal Minor Contact Sungrow Branch fwd Idc high Branch for...

Page 96: ...display and the DSP LCD power supply malfunction Check the connection between the LCD display and the DSP when the inverter is voltage free Failure to communicate with PC Possible reasons are various...

Page 97: ...g any work on the inverter Only qualified personnel can perform the work described in this chapter Do not leave any screws washers or other metallic parts inside the inverter to avoid damages to the i...

Page 98: ...s also required esp when the system performance is poor 12 2 2 Maintenance Interval Maintain the inverter and internal electric devices periodically to ensure the good performance of the inverter The...

Page 99: ...her the device makes abnormal noise or sound during operation Check whether the interior temperature or enclosure temperature of the inverter is excessively high Check whether the humidity and dust in...

Page 100: ...the cabinet Air inlet outlet Check whether the air inlet filters and ventilation ducts of the inverter and its internal devices are normal and clean or replace the filters if necessary Cable connecti...

Page 101: ...o on nc ce e e ev ve er ry y 6 6 m mo on nt th hs s t to o a a y ye ea ar r C Ch he ec ck k iit te em m C Ch he ec ck k m me et th ho od d Safety function Check the stop functions of the emergency st...

Page 102: ...inverter interior is important for the maintenance of the inverter Due to ambient temperature humidity dust and vibration there may be dust deposition inside the inverter blocking the air entries and...

Page 103: ...ie ef f I In nt tr ro od du uc ct tiio on n The air inlets are located at the top of the inverter It is recommended to clean the air inlet regularly to avoid blocking P Pr ro oc ce ed du ur re e Clean...

Page 104: ...the Lock and Hinge Check the functionality and state of the lock and hinge of the inverter after the cleaning work Lubricate the lock and hinge if necessary 12 3 8 Checking the Sealing Strip The seali...

Page 105: ...97 alcohol until the surface is clean enough to accept Or try other local frequently used non corrosiveness detergent M Ma aiin nt te en na an nc ce e a an nd d o op pe er ra at tiio on n s st te ep p...

Page 106: ...97 alcohol 3 When the surface is clean and dry paint the scratched parts of the paint by banister brush and make sure the painting is as uniform as possible M Ma aiin nt te en na an nc ce e a an nd d...

Page 107: ...e surface is clean and dry paint the base material revealed parts with zinc primer or other local primers with the same function for protection The paints should cover the revealed primer completely 4...

Page 108: ...d void all warranty from Sungrow 12 5 1 Replacing DC Fuses Strictly observe the instructions in this chapter to replace the fuse Any personal injury or property damage caused by the disobedience of th...

Page 109: ...witch disconnect AC and DC maintenance switch and perform Step 4 about 20 minutes later when the capacitor inside the machine discharges completely step 4 Use a multimeter with a measuring range of 15...

Page 110: ...s s F Fiig gu ur re e 1 Unscrew fastening bolt of the to be replaced fuse with a socket spanner 2 Remove the fuse 3 Use M8 30 bolt to fasten new fuse with a socket spanner Fastening torque 18 23N m 12...

Page 111: ...en niin ng g t th he e E En nc cllo os su ur re e 1 Insert the key 2 Turn the handle counterclockwise to unlock the door F Fiix xiin ng g t th he e E En nc cllo os su ur re e When the cabinet door is...

Page 112: ...he stud leaves the gourd hole shown as C It is strictly forbidden to close the door forcefully without lifting the limit rod step 2 Lock the door lock and pull out the key The method of operation is o...

Page 113: ...O Ou ut tp pu ut t A AC C AC output power 2750 kVA 45 2500 kVA 50 Max AC output current 2887 A Nominal AC voltage 550 V AC voltage range 467 605 V Nominal grid frequency 50 Hz 60 Hz Grid frequency ra...

Page 114: ...nication Standard RS485 Ethernet Grid support Q at night function optional L HVRT active reactive power control and power ramp rate control S SG G3 31 12 25 5H HV V 3 30 0 S SG G3 34 40 00 0H HV V 3 3...

Page 115: ...rotection Circuit breaker Surge protection DC Type I II AC Type II Grid monitoring Yes Ground fault monitoring Yes Insulation monitoring Yes Overheat protection Yes Q at night Optional G Ge en ne er r...

Page 116: ...DC short circuit current 10000 A O Ou ut tp pu ut t A AC C AC output power 3610kVA 30 3437kVA 45 3125kVA 50 3781kVA 30 3437kVA 45 3125kVA 50 Max AC output current 3308 A Nominal AC voltage 630 V 660 V...

Page 117: ...e power control and power ramp rate control 14 2 Tightening Torques Tighten the cable with proper torque shown below to prevent the poor contact high contact resistance or fire caused by the looseness...

Page 118: ...ed or neighboring devices running out of the allowed limit values Unforeseen calamity or force majeure The use of supplied software produced by Sungrow Power Supply Co Ltd is subject to the following...

Page 119: ...ervice greece sungrow co India Sungrow India Private Limited Gurgaon 9108041201350 service in sungrowpower com Italy Sungrow Italy Milano service italy sungrow co Japan Sungrow Japan K K Tokyo 81 3 62...

Page 120: ...tative Bureau Istanbul 90 2127318883 service turkey sungrow co UK Sungrow Power UK Ltd Milton Keynes 44 0 0908 414127 service uk sungrow co U S A Mexico Sungrow USA Corporation PhoenixArizona 1833 747...

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