Sungrow SG125HV-30 User Manual Download Page 81

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User Manual

8 Troubleshooting and Maintenance

Step 7

Press the hump of the latch hook and
unplug the cable connection joint outwards.

Step 8

When the side clearance is restricted,
loosen screws in the middle of the fan guide
rail to remove the first fan.

Step 9

Remove all the fans from the inverter.

Step 10

Clean the fan with soft brush or vacuum cleaner, or replace the broken

fans.

Step 11

Reassemble the fans back into the inverter and restart the inverter.

Cleaning Air Inlet and Outlet

A huge amount of heat is generated in the process of running the inverter. The
inverter adopts a controlled forced-air cooling method.

In order to maintain good ventilation, please check to make sure the air inlet and
outlet are not blocked.

Clean the air inlet and outlet with soft brush or vacuum cleaner if necessary.

Summary of Contents for SG125HV-30

Page 1: ...SG125HV 30 UEN Ver11 202003 Version 1 1 User Manual SG125HV 30 PV Grid connected Inverter...

Page 2: ......

Page 3: ...tional information at www sungrowpower com Target Group This manual is for technical personnel who are responsible for inverter installation operation and maintenance and the inverter owner who will p...

Page 4: ...ed 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 leve...

Page 5: ...Cover No User Serviceable Parts Inside Refer Servicing To Qualified Service Personnel CAUTION Risk Of Electric Shock a Both ac and dc voltage sources are terminated inside this equipment Each circuit...

Page 6: ...User Serviceable Parts Inside Refer Servicing To Qualified Service Personnel CAUTION Risk Of Electric Shock a Both AC and DC voltage sources are terminated inside this equipment Each circuit must be i...

Page 7: ...nical Description 12 2 3 1 Circuit Diagram 12 2 3 2 Function Description 13 2 3 3 Derating 14 2 3 4 PID Function 17 3 Installation Flow 18 4 Unpacking and Storage 20 4 1 Unpacking and Inspection 20 4...

Page 8: ...ng Connection 47 6 4 1 Grounding System Overview 47 6 4 2 Additional Grounding Terminal 48 6 5 RS485 Communication Connection 49 6 5 1 Communication Overview 49 6 5 2 RS485 Communication System 51 6 5...

Page 9: ...unning Information 78 10 8 History Record 79 10 8 1 Fault Alarm Records 79 10 8 2 Yields Records 80 10 8 3 Event Records 81 10 9 More 82 10 9 1 Power On Power Off 82 10 9 2 System Parameters 82 10 9 3...

Page 10: ......

Page 11: ...rnings and notes will be specified at the critical points in corresponding chapters All installations should be performed by technical personnel They should have Received professional training Read th...

Page 12: ...Proper ventilation should be maintained during device operation The fan s air inlet and outlet should not be covered to ensure the device interior can sufficiently cool down During Electrical Connecti...

Page 13: ...nd explosion inside the device Keep in mind that these accidents can only be handled by qualified personnel Improper handling of these accidents may lead to a more serious fault or accident Plugging i...

Page 14: ...discharged completely Verify using proper testing device to make sure there is no voltage or current Keep unqualified persons away A temporary warning sign and barrier must be posted to keep unqualif...

Page 15: ...spect the following regulations Grid connection regulations Safety instructions related to PV arrays Safety instructions related to other electrical devices WARNING ELECTRIC SHOCK HAZARD THE DC CONDUC...

Page 16: ...supplies a DC voltage to this equipment CAUTION Risk of electric shock from energy stored in the capacitor Do not remove cover until 5 minutes after disconnecting all sources of supply CAUTION Hot su...

Page 17: ...is illustrated in Fig 1 1 Inverter cannot connect the PV strings whose positive and negative terminals need to be grounded Do not connect any local load between the inverter and the AC circuit breake...

Page 18: ...tream transformer meets the requirements described in 5 2 1 Medium voltage Transformers The AC cables meet the requirements described in 5 2 2 AC Cable Requirements 1 2 Product Introduction 1 2 1 Mode...

Page 19: ...r valve 4 Electrical connection area Includes DC terminal AC terminal and RS485 communication terminal 5 Air outlet Controlled forced air cooling method Ensures proper ventilation 6 Handles Handles ar...

Page 20: ...Dimensions of the inverter 1 2 4 LED Indicator Panel As an HMI the LED indicator panel on the inverter front panel indicates the present working state of the inverter Fig 1 4 LED indicator panel Tab 1...

Page 21: ...d PID function is not enabled Red ON A fault occurred and the device cannot connect to the gird Periodical flash Fault recovery Green ON PID function is running Periodical flash PID function exception...

Page 22: ...in circuit of the inverter The MPPT is utilized for DC input to ensure the maximum power from the PV array at different PV input conditions The inversion circuit converts the DC power into AC power an...

Page 23: ...gram 1 3 2 Function Description Inversion function The inverter converts the DC current into grid compatible AC current and feeds the AC current into the grid Data storage The inverter achieves the ru...

Page 24: ...from overload or potential faults Situations requiring inverter power derating are Ambient temperature is too high Gird voltage is too low Fluctuations of external power level Input voltage is too hi...

Page 25: ...1 0 40 45 50 55 60 0 6 0 2 Vmpp 860V Vmpp 1050V Vmpp 1250V 0 5 42 Fig 1 7 Over temperature Derating Pf 1 Lower limit of the over temperature derating about 50 of the nominal power When both the module...

Page 26: ...600 Vmin Vmax 570 0 9 Fig 1 8 Grid under voltage derating Pf 1 High input voltage derating If the input voltage is too high the inverter may derate the power output The relationship between the input...

Page 27: ...function module suppresses the PID effect by raising the potential between the negative electrode of PV array and earth to a positive value PID Recovery Function When the inverter is not running the...

Page 28: ...2 1 gives a detailed explanation Unpacking and Inspection Move inverter Install inverter Electrical connection Check before commissioning Commissioning Start Success End Troubleshooting Yes No 1 2 Sel...

Page 29: ...npacking and inspection 4 1 4 Read the User Manual especially the section on Safety Instruction 1 5 Install the inverter to the selected installation site 5 3 6 Electrical connection DC side connectio...

Page 30: ...eceiving Check the completeness of delivery contents according to the packing list Check the inner contents for damage after unpacking In case any damage is found please contact SUNGROW or the forward...

Page 31: ...g 3 2 Inverter nameplate Image shown here is indicative only Product in kind prevail Item Description 1 SUNGROW logo and product type 2 Technical data of inverter 3 Instructions and marks of conformit...

Page 32: ...sten set Six units to fasten bracket to metal frame E Fix screw Two M4 16 screws to connect the inverter to the bracket F Big flat washer Two additional big flat washers are within the scope of the de...

Page 33: ...three layers Do not store the inverters in stack for more than half a year if the stack layer is more than three One layer Two layers Three layers Keep the inverter away from the chemical corrosive ma...

Page 34: ...he 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 mai...

Page 35: ...g and operation Distance from bracket to ground Ground 795mm 31 3inch 450mm 17 7inch Install the inverter vertically or at a maximum back tilt of 75 degrees Do not install the inverter leaning forward...

Page 36: ...r plant ensure that the waterproof connectors are at least 650mm higher than the floating body surface Bind the cables at the positions 300 350mm away from the DC connector AC waterproof terminal and...

Page 37: ...600mm 23 6inch When installing multiple inverters it is recommended to install multiple devices side by side 400mm 15 7inch 600mm 23 6inch 600mm 23 6inch 600mm 23 6inch Side by side installation Recom...

Page 38: ...2 Moving Inverter to Installation Site To install the inverter remove the inverter from the packing case and move it to the installation site Follow the instructions below as you move the inverter Al...

Page 39: ...s 4 4 Installing the Inverter If you do not use the supplied bracket you can drill holes as per specifications below 518mm 20 4inch 558mm 22inch 396mm 15 6inch 460mm 18 1inch 2 M4 10 492 5mm 19 4inch...

Page 40: ...ket Step 4Drill holes according to the marks made before If the shape of the metal frame does not match the bracket re drill holes on the bracket according to the metal frame Step 5Secure the bracket...

Page 41: ...User Manual 4 Mechanical Installation 31 Mount the inverter SG125HV 30 is applicable to optical storage DC coupling and project integrated installation with container...

Page 42: ...amage to the device Cable connections should only be done by qualified professional personnel Always keep in mind that the inverter is AC and DC redundancy power supplied Electrical operators must wea...

Page 43: ...crews 6 AC switch Serviced as an automatic overcurrent device 7 DC PE terminal DC PE cable access M6 16 right or M10X30 left fastening screws 8 Waterproof air valve 9 Communication cable gland For Com...

Page 44: ...85 and the dry contact to prevent interference with the power cables On site wire conduit can be used as a substitute for the gland Take replacing AC gland as an example operation steps are as follows...

Page 45: ...e done only after receiving approval from the local utility company Before grid connection verify to make sure the grid voltage and frequency meet the requirements of the inverter Contact the local ut...

Page 46: ...z Primary Voltage According to the grid connection point voltage Secondary Voltage 600Vac Line to Line allowed range 528 660Vac SG125HV 30 MV Grid MV Transformer 1 2 4 Note Additional phase monitoring...

Page 47: ...should be taken into account The applicable country specific standards should be taken into account The short circuit apparent power of the transformer at grid tied point should be no less than 10 tim...

Page 48: ...g to the following factors Grid impedance complies with the specifications below to avoid accidental shortcircuit or output power derating 600 615 630 645 660 675 690 0 0 15 Max grid impedance Ohm AC...

Page 49: ...ce with the local installation requirements If the aluminum cable is selected in order to ensure a reliable electrical connection use the the copper and aluminum conversion terminal to avoid direct co...

Page 50: ...ctions are completed Step 1Disconnect AC circuit breaker to prevent it from inadvertently reconnecting Step 2Loosen the six screws M6 16 on the lower connection cabinet Step 3Strip off AC cables as sh...

Page 51: ...e crimping lug that matches with the M10 bolt and tighten it with proper tool E B E 3mm Fig 5 4 Crimping the lugs Step 5Install the heat shrinkable tubing Step 6Connect the AC cable to the correspondi...

Page 52: ...tionality of the device due to self weight of the cables in case of land subsidence is avoided Step 7Screw cap nut tightly onto the cable Step 8Seal the gaps between the AC cable and the gland inside...

Page 53: ...String N The SG125HV 30 is a single stage inverter with only one MPPT To make full use of the DC input power and reduce the power loss caused by mismatch the type and rating of the PV modules connect...

Page 54: ...ter DC Cable Requirements Select DC cables according to the following factors The maximum operating temperature of the cable should no less than 90 C 194 F The current rating of the cable should be se...

Page 55: ...Kcmil DC Cable Connection High voltage inside the inverter Make sure all DC and AC cables connected to the inverter are voltage free before electrical connection Do not connect the AC circuit breaker...

Page 56: ...ions refer to 10 2 Tightening Torques PV PV PE PV PV PE When accessing the positive and negative cable it is necessary to ensure the insulation requirements between the positive access and the negativ...

Page 57: ...e materials to prevent the entry of foreign bodies or moisture and ensure long term and normal operation of the inverter 5 4 Additional Grounding Connection Due to the transformer less design of the i...

Page 58: ...ower System Inverter AC Grounding Electrode L1 L1 AC Circuit Breaker L2L3 L2 L3 Inverter 1 Inverter 2 Inverter n PE Equipotential cable PE PE Fig 5 7 Grounding of inverter 5 4 2 Additional Grounding T...

Page 59: ...ing Torques 5 5 RS485 Communication Connection 5 5 1 Communication Overview There are two communication waterproof connection terminals on the bottom of the inverter RS485 A B terminals and RS485 inte...

Page 60: ...ND LOCAL STOP Fig 5 10 Communication configuration The inverter operation information can be transferred to the PC of the installed monitoring software or to a local data collector through RS485 commu...

Page 61: ...rter all inverters can be connected in a daisy chain through an RS485 communication cable The shielding layer of the RS485 cable should be single point grounded The length of an RS485 communication ca...

Page 62: ...nection RS485 bus connection Terminating Resistor n 15 n 15 Inverter 1 Only out No 120ohm Yes 120ohm Inverter 2 n 1 In and Out No 120ohm Inverter n In and Out No 120ohm Yes 120ohm 5 5 3 RS485 Communic...

Page 63: ...gland inside the lower part of the cabinet with duct seal If there is no other connection procedure reassemble and connect the front cover of the connection cabinet Seal the gap between the cable and...

Page 64: ...of dry contact s cable is 28AWG 16AWG The devices to be connected to the dry contacts must comply with the related requirements AC Requirements DC Requirements Max Voltage 250Vac Max Current 5A Max V...

Page 65: ...S485 daisy chain Inverter1 Inverter2 Inverter N RS485 connections Passive switch Master inverter Slave inverter Slave inverter IN OUT IN OUT OUT Data Logger RS485 PC RS232 DIN1 PGND DIN1 PGND LOCAL ST...

Page 66: ...e for its intended use 8 The terminals not used underneath the inverter should be sealed 9 Warning signs labels are suitably affixed and durable 6 2 Commissioning Procedure If all of the items mention...

Page 67: ...l 6 Commissioning 57 If the conditions are OK the inverter feeds AC power to the grid and enters into the running state Step 5Observe the status of LED indicator panel Refer to Tab 1 2LED indicator de...

Page 68: ...nnect all of the PV string inputs Please strictly adhere to the above sequence The inverter may be damaged otherwise Step 3Wait about ten minutes until the capacitors inside the inverter have been dis...

Page 69: ...ners and the O M company are responsible for the disposal of the inverter Some parts and devices in the inverter such as the LED indicator panel batteries modules and other components may cause enviro...

Page 70: ...y 1 Measure the actual grid voltage and contact the local electric power company for solutions if the grid voltage is higher than the set value 2 Check whether the protection parameters are appropriat...

Page 71: ...or solutions if the grid voltage is lower than the set value 2 Check whether the protection parameters are appropriately set via the APP or the LCD 3 Check whether the AC cable is firmly in place 4 If...

Page 72: ...fault still exists contact Sungrow Service 012 Excessive leakage current 1 The fault can be caused by poor sunlight or damp environment and the inverter will be reconnected to the grid after the envi...

Page 73: ...of the normal operation range of the inverter Wait for the inverter to return to normal If the fault still exists contact Sungrow Service 017 Grid voltage unbalance the inverter detects unbalanced th...

Page 74: ...excessively high and out of the safe range 1 Check whether the inverter is directly exposed to sunlight If so take some shading measures 2 Check and clean the air ducts 3 Check whether there is 070 fa...

Page 75: ...r to return to normal Disconnect the AC and DC switches and reconnect the AC and DC switches 15 minutes later to restart the inverter If the fault still exists contact Sungrow Service 043 Low ambient...

Page 76: ...ntact Sungrow Service 078 081 PVx abnormal 1 Check if the xth PV string needs to be connected If not ignore the alarm and If so check the connection status and make sure it is connected reliably 2 Che...

Page 77: ...le the AFD function through the APP or the LCD screen so that the inverter will recover to be normal 2 If the fault is not caused by the foregoing reasons and still exists contact Sungrow Service 105...

Page 78: ...t is not caused by the foregoing reasons and still exists contact Sungrow Service The code 448 to code 471 are corresponding to string 1 to string 24 respectively 532 547 String x reverse connection a...

Page 79: ...2 Check the module for abnormal aging 3 If the fault is not caused by the foregoing reasons and still exists contact Sungrow Service The code 580 and 587 are corresponding to string 17 and string 24 r...

Page 80: ...enance Lethal voltage still exists in the inverter even after the inverter has been switched off and disconnected Please wait for at least ten minutes and then perform maintenance work Only qualified...

Page 81: ...p 10 Clean the fan with soft brush or vacuum cleaner or replace the broken fans Step 11 Reassemble the fans back into the inverter and restart the inverter Cleaning Air Inlet and Outlet A huge amount...

Page 82: ...thereby achieving remote maintenance on the inverter This manual describes only how to achieve near end maintenance via the Bluetooth connection For remote maintenance through the Eye or WiFi refer to...

Page 83: ...four PV inverters in the system must be kept exactly the same The ISO function of all four PV inverters needs to be set to Enable 9 4 Menu iSolarCloud Running information More Home History record Eve...

Page 84: ...n the APP to enter the login interface and click Direct Login to enter the next screen Step 2Open the APP after which the Bluetooth search screen pops up automatically and select the to be connected i...

Page 85: ...contact SUNGROW to obtain the advanced account and corresponding password Step 4If the inverter is not initialized you will enter the quick setting screen of initialize protection parameter After fin...

Page 86: ...iption No Designation Description 1 Date and time System date and time of the inverter 2 Inverter state Present operation state of the inverter For details refer to Tab 9 2Description of inverter stat...

Page 87: ...SolarCloud app Start up The inverter is initializing and synchronizing with the grid Derating running The inverter derates actively due to environmental factors such as temperature or altitude Shut do...

Page 88: ...ut string grid voltage grid current environment and other information Tab 9 4 Run info Parameter Description Input Total DC power kW the total PV input power MPPTx voltage V the input voltage MPPTx cu...

Page 89: ...esistance to ground k Countries info Inverter selected country code Command info Inverter selected command information 9 8 History Record Tap on the navigation bar to enter the history record screen a...

Page 90: ...detailed fault info as shown in following figure Fig 9 9 Detailed fault alarm info 9 8 2 Yields Records User can view various energy records power curve daily energy histogram daily energy histogram m...

Page 91: ...output every year Click the to view the power curve page as shown in following figure Fig 9 10 Power curve Tap the time bar on the top of the screen to select a time segment and view the correspondin...

Page 92: ...n as shown in the following figure Fig 9 11 More 9 9 1 Power On Power Off Click or and click in the dialog box popped out to start or stop the inverter as shown in the following figure Fig 9 12 Power...

Page 93: ...is different from the value in the external metering device you should adjust energy by Total power yields compensation setting Reset to Factory Defaults All history information will be unrecoverable...

Page 94: ...s 1 247 9 9 4 Operation Parameters Click the to check the operation parameters and set the related parameters as shown in the following figure The operation parameters include the active reactive powe...

Page 95: ...s ON set the active power decline rate 6000 mi n 8 6000 min Power increase enable Set the power rise rate when a fault is removed When it is ON the active power raise rate can be set OFF OFF ON Power...

Page 96: ...a PID false alarm and reminds the user to take corresponding measures After processing the alarm information can be cleared via the function After the PID Recovery Night Anti PID Day function is enab...

Page 97: ...protection value 58 50Hz 50Hz 59 88Hz AC over frequency single stage protection value 60 50Hz 60 12Hz 65Hz Tab 9 10 Multi stage Protection Parameters Explanation Parameter Default Range AC under volta...

Page 98: ...cy level 4 protection value 57Hz 53Hz 59 88Hz AC over frequency level 4 protection value 62Hz 60 12Hz 65Hz AC under voltage level 4 protection time 1 5s 0 05s 600s AC over voltage level 4 protection t...

Page 99: ...l 3 protection time AC over voltage level 1 protection time AC over voltage level 2 protection time AC over voltage level 3 protection time AC under frequency level 1 protection time AC under frequenc...

Page 100: ...ser Manual 90 9 9 6 Password Changing Tap to enter the modify password screen as shown in the following figure Fig 9 19 Change password The new password should consist of 6 characters a combination of...

Page 101: ...current to the array 0A Output AC AC output power 125000 VA 50 Max AC output current 120 A Nominal AC voltage 3 PE 600 V AC voltage range 528 660 V NA 480 690 V IEC Nominal grid frequency 50 60 Hz Gri...

Page 102: ...oth APP RS485 DC connection type OT or DT terminal Max 185mm2 350 Kcmil AC connection type OT or DT terminal Max 185mm2 350 Kcmil Compliance CE IEC 62109 1 2 IEC 61000 6 2 4 IEC 61727 IEC 62116 IEC 61...

Page 103: ...he safety warnings or instructions contained in all documents relevant to the product Install or operate the product under incorrect safety or protection conditions Alter the product or supplied softw...

Page 104: ...Australia SUNGROW Australia Group Pty Ltd NSW 61 2 9922 1522 service sungrowpower com au Brazil SUNGROW Power do Brasil Sao Paulo 55 015 9 98197824 kaue oliveira sa sungrowpower com France SUNGROW Fr...

Page 105: ...Thailand SUNGROW Power Hong Kong 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 servi...

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