Sungrow SG125HV User Manual Download Page 77

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User Manual

6 Electrical Connection



Multiple inverters connected in a daisy chain topology

Inverter1

Inverter2

Inverter N

Passive switch

DIN1 PGND DIN1

PGND

LOCAL STOP

DIN1 PGND DIN1

PGND

LOCAL STOP

DIN1 PGND DIN1

PGND

LOCAL STOP

Fig. 6-9

Multiple inverters connected in a daisy chain topology



Multiple inverter Master-slave mode connection in an RS485 daisy chain

Inverter1

Inverter2

Inverter N

RS485 connections

Passive switch

Master inverter

Slave inverter

OUT

Data Logger

RS485

RS232

DIN1 PGND DIN1

PGND

LOCAL STOP

DIN1 PGND DIN1

PGND

LOCAL STOP

DIN1 PGND DIN1

PGND

LOCAL STOP

Fig. 6-10

Multiple inverter Master-slave mode connection

The dry contacts only support passive switch signal input.

The inverter with a direct connection to the data logger is

automatically set to the master inverter. It sends Stop instructions to

other inverters via RS485 communications.

Summary of Contents for SG125HV

Page 1: ...SG125HV V1 UEN Ver10 201809 Version 1 0 User Manual SG125HV SG125HV 20 PV Grid connected Inverter...

Page 2: ......

Page 3: ...nual is for technical personnel who are responsible for inverter installation operation and maintenance and the inverter owner who will perform daily APP operation How to Use This Manual Read the manu...

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: ...e pi ces pouvant tre r par es par l utilisateur l int rieur Consulter le personnel qualifi de service CAUTION Risk Of Electric Shock a Both AC and DC voltage sources are terminated inside this equipme...

Page 7: ...V CAUTION Check user manual before service ATTENTION V rifier le manuel d utilisateur avant l utilisation...

Page 8: ...2 5 DC Switch 17 2 2 6 AC Switch 18 2 3 Technical Description 18 2 3 1 Circuit Diagram 18 2 3 2 Function Description 19 2 3 3 Derating 20 2 3 4 PID Function 23 3 Installation Flow 24 4 Unpacking and...

Page 9: ...put Configuration 52 6 3 2 PV Input Connection 53 6 4 Grounding the Inverter 57 6 4 1 Grounding System Overview 57 6 4 2 Second Protective Earth Terminal 58 6 5 RS485 Communication Connection 59 6 5 1...

Page 10: ...82 10 3 Log into SunAccess APP 83 10 4 Homepage 86 10 5 Run Info 88 10 6 History Record 90 10 6 1 Fault Alarm Records 90 10 6 2 Power Yields Records 92 10 6 3 Event Records 93 10 7 More 94 10 7 1 Powe...

Page 11: ...IX 11 4 Contact Information 109...

Page 12: ......

Page 13: ...prior to any work All detailed work related safety warnings and notes will be specified at the critical points in corresponding chapters All installations should be performed by technical personnel Th...

Page 14: ...improperly handled During Mechanical Installation Make sure inverter is not electrically connected before installing the inverter System performance loss due to bad ventilation Proper ventilation shou...

Page 15: ...he DC AC switch can be touched during operation Operate the inverter by strictly following the descriptions in this manual to avoid unnecessary personal injury and property damage Arc flash fire or ex...

Page 16: ...ore any operation in the area that may be affected by an arc flash personal protective equipment PPE that meets the requirement must be worn A PPE category 2 is recommended Maintenance and Service The...

Page 17: ...from Sungrow There is a risk of inverter damage due to electrostatic discharge The printed circuit boards contain components sensitive to electrostatic discharge Wear a grounding wrist band when handl...

Page 18: ...nt l op rateur ou un tiers Par cons quent les consignes de s curit g n rales suivantes doivent tre lues et toujours gard es en t te avant tout travail Tous les avertissements et notes de s curit d tai...

Page 19: ...eur Des l sions des blessures graves ou des ecchymoses peuvent se produire si l appareil est mal manipul Pendant l Installation M canique S assurer que l onduleur n est pas connect lectriquement avant...

Page 20: ...eut assurer la s curit de personnel et de propri t ATTENTION Il y a un risque de br lure Ne pas toucher les composants chauds de l onduleur par exemple le radiateur pendant le fonctionnement Seul le c...

Page 21: ...s re u de formation AVERTISSEMENT Avant toute op ration de l appareil une valuation pr liminaire de l arc lectrique dans la zone d op ration est n cessaire S il y a une possibilit d un arc lectrique L...

Page 22: ...peut alt rer les fonctions de s curit de l onduleur est supprim L onduleur ne contient pas des pi ces r parables par le propri taire Contacter le personnel autoris local si un travail de service est r...

Page 23: ...eur l int rieur Consulter le personnel qualifi de service CAUTION Risk Of Electric Shock a Both AC and DC voltage sources are terminated inside this equipment Each circuit must be individually disconn...

Page 24: ...1 Safety Instructions User Manual 12 service d utilisateur avant l utilisation...

Page 25: ...need to be grounded Do not connect any local load between the inverter and the AC circuit breaker Inverter is applicable only to the grid connected PV system Any other usage is strictly forbidden A D...

Page 26: ...If the Anti PID function is to be enabled ensure that The inverter is applied in the IT system The downstream transformer meets the requirements described in 6 2 1 Medium voltage Transformers The AC...

Page 27: ...a Includes DC terminal AC terminal and RS485 communication terminal 5 Air outlet Controlled forced air cooling method Ensures proper ventilation 6 Handles Handles are designed for transporting install...

Page 28: ...m 11 7inch 902mm 35 5inch 670mm 26 4inch 832mm 32 8inch Fig 2 3 Dimensions of the inverter 2 2 4 LED Indicator Panel As an HMI the LED indicator panel on the inverter front panel indicates the present...

Page 29: ...The RS485 communication cable is connected and the communication channel has data interaction Fault PID OFF No alarm or fault has occurred and PID function is not enabled Red ON A fault occurred and...

Page 30: ...to the OFF position and the inverter disconnects from the AC grid Turn the AC switch to the ON position before restarting the inverter 2 3 Technical Description 2 3 1 Circuit Diagram Fig 2 5 shows the...

Page 31: ...r Configuration The inverter provides various parameter settings You can set the parameters via the phone s APP to change the requirements of the device or optimize the performance of the device Commu...

Page 32: ...te The over frequency curve may vary with the country setting Power Limit Setting Inverter output power can be adjusted via the APP interface or remote grid dispatch from the grid company Over tempera...

Page 33: ...e nominal power When both the module temperature and the internal temperature meet the derating condition inverter limits its power according to the lower power limit value of the two Grid Under volta...

Page 34: ...0 600 Vmin Vmax 570 0 9 Fig 2 7 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 inp...

Page 35: ...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 36: ...3 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 37: ...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 38: ...Check the packing for any visible damage upon receiving Check the completeness of delivery contents according to the packing list Check the inner contents for damage after unpacking In case any damage...

Page 39: ...ge Max Input Voltage DC 1500 V 125 kW YES Non isolated Inverter SUNGROW POWER SUPPLY CO LTD www sungrowpower com Made In China Ambient Temperature Max Continuous Output Power 253758 MPP Max MPP Voltag...

Page 40: ...er is in compliance with directives of CE Refer to the corresponding instructions Don t dispose of the inverter with the household waste 4 3 Scope of Delivery A B C D E F Fig 4 3 Scope of delivery Ite...

Page 41: ...must be packed into its original carton with the desiccant bags inside Seal the packing carton with adhesive tape Store the inverter in a dry and clean place to protect it against dust and moisture Re...

Page 42: ...4 Unpacking and Storage User Manual 30 If the inverter has been stored more than half a year the qualified persons should thoroughly check and test it before using...

Page 43: ...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 44: ...nstall the inverter leaning 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 gr...

Page 45: ...ange of the installation site is 0 100 Max ambient temperature 60 140 F Min ambient temperature 25 13 F Relative humidity 0 100 Ensure there is enough space for convection The fans are maintained on t...

Page 46: ...mm 3 9inch Do not install the inverter in a confined space The inverter will not work normally if otherwise Install the inverter where children cannot reach Do not install the inverter near residentia...

Page 47: ...inverter Do not release the equipment unless it has been secured firmly 5 3 Installation Tools Gather the following tools before installation Torque wrench Screwdriver Wire stripper Terminal crimping...

Page 48: ...te walls the user needs to purchase expansion bolts with proper size recommended M10 65 to attach the bracket to concrete walls 5 4 1 Installing to Metal Frame Step 1 Remove the bracket and fasteners...

Page 49: ...ckplate E Step 6 Lift the inverter above the bracket and then slide down to make sure they match perfectly Step 7 After putting the inverter on the bracket secure the inverter to the bracket with two...

Page 50: ...per position and height Step 3 Mark the position for holes drilling according to the hole positions of the bracket Step 4 Drill holes according to the marks made before Check to ensure that there is n...

Page 51: ...d then slide down to make sure that the recesses on the back of the inverter fit perfectly together with the bracket Step 7 Screw two M12 screwed lifting rings to the screw holes on top of the inverte...

Page 52: ...e whole process of inverter lifting Inverter may hit the wall or other obstacles if you re not careful Step 9 Fit the inverter to the bracket refer to step 6 Step 10 After you fit the inverter to the...

Page 53: ...njury or permanent damage 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 Electrica...

Page 54: ...evail No Name Description 1 DC switch Protective components to safely disconnect DC side current 2 Configuration circuit board Communication cable connection and configuration 3 DC crimping terminal D...

Page 55: ...of DC cable external diameter is 20 26mm 11 AC cable gland For AC cable connection Knockout diameter for AC cable is 75 8mm The proper range of AC cable external diameter is 38 56mm 12 AC cable gland...

Page 56: ...2 2 86mm 75 8mm 2 98in 6 1 2 Dimensions of Terminal Before selecting the cable side terminals please notice the dimensions of the AC DC terminals specified in the figure to make sure the selected term...

Page 57: ...rid company with any connectivity issues For detailed parameters please refer to 11 1 Technical Data AC Circuit Breaker An independent circuit breaker is installed outside the output side of the inver...

Page 58: ...m the technical solution L3 L2 L1 L3 L2 L1 LV side HV side MV transformer Inverter 1 Inverter 2 Inverter n Fig 6 2 Multiple Inverters in parallel Connection Medium voltage Transformers SG125HV SG125HV...

Page 59: ...The protection degree of the transformer should be taken into account to coordinate with the inverters For thermal rating the load curve of the transformer and the ambient conditions at the respective...

Page 60: ...les according 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 imped...

Page 61: ...e must be designed in accordance with the local installation requirements If the aluminum cable is selected in order to ensure a reliable electrical connection use the albronze filter or the copper an...

Page 62: ...the lower connection cabinet Step 3 Step 4 Strip off AC cables as shown below For flexible cables stranded wires use crimping lugs The cross section of the AC cable conductor must be sized in order t...

Page 63: ...e may differ It is unnecessary to distinguish between phases during AC cable connection for the inverter has self adaptive capacity Observe the pin assignment of AC terminal block If a phase wire is c...

Page 64: ...materials to prevent the entry of foreign bodies or moisture and ensure long term and normal operation of the inverter 6 3 Connecting Inverter to PV Arrays Lethal voltage exists PV arrays generate ele...

Page 65: ...of the DC input power and reduce the power loss caused by mismatch the type and rating of the PV modules connected to one inverter should be the same including the same PV module model the same number...

Page 66: ...opper bar and the aluminum cable Albronze filter Aluminum cable Aluminum cable Conversion terminal Beware the direction of the albronze filter i e the copper side must be closely attached to the coppe...

Page 67: ...ording to the DC cable specification Step 3 Insert the end of the DC cable to the cable socket that matches with the M10 bolt and tighten it with the proper tool Step 4 Install the heat shrinkable tub...

Page 68: ...ity of the PV cells After confirmation you can insert the DC connectors into the input terminals on the bottom of the inverter For the connection to the same MPPT reversing the polarity of a single st...

Page 69: ...em Overview In this PV system all non current carrying metal parts and device enclosure should be grounded such as the PV array frame and inverter enclosure When there is only one inverter in the PV s...

Page 70: ...r 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 6 5 Grounding of inverter 6 4 2 Second Protective Earth T...

Page 71: ...5 RS485 Communication Connection 6 5 1 Communication Overview There are two communication waterproof connection terminals on the bottom of the inverter RS485 A B terminals and RS485 interface are prov...

Page 72: ...the installed monitoring software or to a local data logging device through RS485 communication connection Prepare communication cable before communication connection RS485 communication cables shoul...

Page 73: ...r 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 cable...

Page 74: ...al Ethernet port RS485 cable Ethernet cable Inverter Communication connection 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...

Page 75: ...off the vacant terminals to protect from dust and moisture penetrating inside the inverter Step 7 Seal the gaps between the cable and the gland inside the lower part of the cabinet with duct seal If...

Page 76: ...s NC COM are short circuited when a fault occurs the two terminals NC COM are break out The two terminals NO COM are opposite The cross section area range of dry contact s cable is 28AWG 16AWG The dev...

Page 77: ...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 78: ...s are routed safely place and protected against mechanical damage 7 The specification of the AC circuit breaker is appropriate for its intended use 8 The terminals not used underneath the inverter sho...

Page 79: ...rovided there is sufficient sunlight PV arrays initialize and supply DC power to inverter DC link starts to charge and check the state of the utility grid If the conditions are OK the inverter feeds A...

Page 80: ...ate the DC switch to the OFF position and then disconnect all of the PV string inputs Please strictly adhere to the above sequence The inverter may be damaged otherwise Step 3 Wait about ten minutes u...

Page 81: ...proper storage 8 3 Disposal of the Inverter System owners 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 b...

Page 82: ...edly 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 appropr...

Page 83: ...ntact Sungrow Service 006 007 AC output current exceeds the upper limit of the inverter Generally the inverter will be reconnected to the grid after the grid returns to normal If the fault occurs repe...

Page 84: ...5 If the fault is not caused by the foregoing reasons and still exists contact Sungrow Service 011 DC component in the AC current exceeds the permissible range of the inverter 1 The fault is caused b...

Page 85: ...o normal If the fault occurs repeatedly contact Sungrow Service 015 Grid overvoltage The grid voltage is higher than the set protection value Generally the inverter will be reconnected to the grid aft...

Page 86: ...still exists contact Sungrow Service 021 022 The inverter detects input overcurrent of the modules Wait for the inverter to return to normal Disconnect the AC and DC switches and reconnect the AC and...

Page 87: ...measures in case of short circuit or damaged insulation layer 3 If the cable is normal and the fault occurs on rainy days check it again when the weather turns fine 4 If the fault is not caused by th...

Page 88: ...If a fan does not operate normally stop and disconnect the inverter to replace the fan 071 AC SPD fault Check the SPD and replace it if necessary 072 DC SPD fault 073 Device anomaly Wait for the inver...

Page 89: ...sts contact Sungrow Service 088 Electric arc fault 089 AFD disable alarm 105 Protection self check failure on grid side Restart the inverter or clear the fault through the App If the fault still exist...

Page 90: ...1 Check whether the corresponding module is sheltered If so remove the shelter and ensure module cleanness 2 Check the module for abnormal aging 3 If the fault is not caused by the foregoing reasons a...

Page 91: ...and dust of the inverter Clean the inverter enclosure if necessary Check if the air inlet and outlet are normal Clean the air inlet and outlet if necessary Six months to a year depend on the dust cont...

Page 92: ...es and then perform maintenance work Only qualified electricians can maintain the fans Step 1 Disconnect the AC Switch Step 2 Rotate the DC switch to the OFF position Step 3 Wait for at least ten minu...

Page 93: ...mble 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 f...

Page 94: ...This manual will utilize the iOS version to introduce the installation and use of SunAccess APP These steps are the same for the Android version The pictures in this document are indicative only since...

Page 95: ...e on the right side of the inverter cabinet to download and install according to the instructions 10 3 Log into SunAccess APP During the use of the SunAccess APP make sure your phone is within 5m from...

Page 96: ...ccording to the serial number on the nameplate attached to the inverter side and establish the connection Step 3 Default username user Input the password 111111 and click Login Fig 10 2 Login If you h...

Page 97: ...e different for different types of users If you login by login without password the app will not show the initialization protection parameter setting interface The regular user can only set the countr...

Page 98: ...ss APP User Manual 86 Fig 10 4 Homepage 10 4 Homepage Step 1 Click the Home icon from the navigation bar Step 2 The homepage with the power power yields and real time alarm info will appear as shown i...

Page 99: ...t within the standby duration Key stop Inverter will stop operation by manually stop via SunAccess app In this way inverter internal DSP stops To restart the inverter manually start via SunAccess app...

Page 100: ...ction is enabled but regulation is not performed actually and no abnormity is detected If a real time alarm occurs in the inverter there will be an alarm or fault icon appearing in the lower right cor...

Page 101: ...DC current A the input current Output AC frequency Hz Total active power kW Apparent power kVA Monthly generating capacity kWh The energy generated in this month Grid voltage A B line voltage V Line...

Page 102: ...rter selected command information 10 6 History Record Click the History icon from the navigation bar to view the history record interface as shown in Fig 10 7 You can check the alarm records power yie...

Page 103: ...time please click the time selection bar on the top of the interface to select a certain period of time The inverter can at most record the latest 100 fault alarm instances Step 2 Select one of the re...

Page 104: ...single day Each point in the curve is the percentage of present power and nominal power Daily energy histogram Shows the power output every day in the present month Monthly energy histogram Shows the...

Page 105: ...3 Fig 10 11 Power curve Step 3 Swipe left to check the power yields histogram as shown in Fig 10 12 Fig 10 12 power yields histogram 10 6 3 Event Records Click the Event records to check the event rec...

Page 106: ...time selection bar on the top of the interface to select a certain period of time The inverter can at most record the latest 100 events 10 7 More Click the More icon from the navigation bar to check...

Page 107: ...ual 10 SunAccess APP 95 Fig 10 14 More 10 7 1 Power On Power Off Click Power on Power off and click Confirm in the dialog box popped out to start or stop the inverter as shown in Fig 10 15 Fig 10 15 P...

Page 108: ...t inverter time according to the local time Time Setting Total power yields compensation If the accumulative value E total in the inverter is different from the value in the external metering device y...

Page 109: ...on parameters to check the operation parameters and set the related parameters as shown in Fig 10 17 The operation parameters include the active reactive power parameters Fig 10 17 Operation parameter...

Page 110: ...imit is modified the change will be saved after the inverter restarts after power failure If set to OFF after the power limit is modified the change will not be saved after the inverter power off and...

Page 111: ...ion can be cleared via the function After the PID Recovery Night Anti PID Day function is enabled the fault indicator on the inverter main panel turns green The PID night recovery function and the PID...

Page 112: ...0Hz 59 90Hz 59 80Hz AC over frequency single stage protection value 65 00Hz 62 00Hz 60 50Hz Tab 10 8 Multi stage Protection Parameters Explanation Parameter Range Default AC under voltage level 1 prot...

Page 113: ...8 0V 657V Vmin recover Min protection recovery voltage 60 0V 600 0V 531V Fmax recover Max protection recovery frequency 60 00Hz 65 00Hz 60 49Hz Fmin recover Min protection recovery frequency 50 00Hz 6...

Page 114: ...ion value 3V AC over voltage recovery value AC over voltage level 1 protection value 3V AC under frequency recovery value AC under frequency level 1 protection value 0 01Hz AC over frequency recovery...

Page 115: ...ters Tab 10 10 Explanation of communication parameters Parameter Description Device address Range 1 247 10 7 6 Download the Log Click the Download the log to check the log download interface and downl...

Page 116: ...10 SunAccess APP User Manual 104 10 7 7 About SunAccess Click the About SunAccess to check the about the interface as shown in Fig 10 23 Fig 10 23 About SunAccess...

Page 117: ...circuit current 240A Max inverter backfeed 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 480 690 V Nominal...

Page 118: ...range 25 to 60 50 derating 13 to 140 122 derating Allowable relative humidity range non condensing 0 100 Cooling method Smart forced air cooling Max operating altitude 4000 m 3000 m derating 13123 ft...

Page 119: ...ate use or install of the product Install or operate the product in unintended environment Install or operate the product without observing relevant safety regulations in the deployment location Ignor...

Page 120: ...11 Appendix User Manual 108 Decompiling decoding or destroying the original program including SolarInfo software and the embedded software is prohibited...

Page 121: ...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 122: ...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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