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KEHUA TECH iStoragE Series, User Manual

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PV Energy Storage Inverter iStoragE Series 

User Manual 

3 Installation 

 

All rights reserved ©Kehua Data Co., Ltd. 

33

 

 

 

Figure3-22

 

Tighten the inverter 

----End 

3.5 Electrical Connection 

PV3

PV 

inverter

PV Meter

iStoragE

Battery Pack

Grid

Load 

Grid Meter

iStoragE

Wifi Module

Breaker

Breaker

PV 1

PV 2

 

Figure3-23

 

Electrical Connection 

3.5.1 Wire Requirement 

The wiring is at the left side of the inverter, as shown in Figure2-8 and Table2-3. The corresponding 

recommended wire specification as shown in Table3-1. 

Summary of Contents for iStoragE Series

Page 1: ...PV Energy Storage Inverter iStoragE Series User Manual...

Page 2: ......

Page 3: ...ibed in this document may not be within the purchase scope or the usage scope Unless otherwise specification in the contract all statements information and recommendations in this document are provide...

Page 4: ...in the future The figures in this manual are just for reference for details please see the actual product Suitable Model Inverter iStoragE 3600 iStoragE 5000 iStoragE 6000 Battery iStoragE B8 1 The PV...

Page 5: ...ury or death Alerts you to a medium low risk hazard that could if not avoided result in moderate or minor injury Alerts you to a low risk hazard that could if not avoided result in minor injury Anti s...

Page 6: ...4 1 1 6 Moisture proof Protection 4 1 1 7 Safety Warning Label Setting 5 1 1 8 Electrical Connection 5 1 1 9 Measurement Under Operation 5 1 2 Safety Precaution for Battery Pack 6 1 2 1 General Safet...

Page 7: ...nd Checking 23 3 4 Installation 24 3 4 1 Single Battery Installation 24 3 4 2 More Batteries Installation 28 3 4 3 Inverter Installation 31 3 5 Electrical Connection 33 3 5 1 Wire Requirement 33 3 5 2...

Page 8: ...Co Ltd 5 Startup and Shutdown 61 5 1 Startup 61 5 2 Shutdown 61 6 Maintenance and Troubleshooting 62 6 1 Maintenance 62 6 2 Troubleshooting 62 7 Package Transportation and Storage 73 7 1 Package 73 7...

Page 9: ...Announcements Before operation please read the announcements and operation instructions in this section carefully to avoid accident The promptings in the user manual such as Danger Warning Caution et...

Page 10: ...tric shock or fire Before operation please check if the inverter is damaged or has other danger Check if the external device or circuit connection is safe Before checking or maintenance if the DC side...

Page 11: ...ing is required at the installation site Beware of electrical voltage The product operates at high voltages WEEE designation Do not dispose of the product together with the household waste but in acco...

Page 12: ...efore touching sensitive components and the other end is well grounded 1 1 5 Grounding Requirements High leakage risk The inverter must be grounded before wiring The grounding terminal must be connect...

Page 13: ...cal connection must be performed according to the description in the user manual and the electrical schematic diagram The configuration of PV string grid level grid frequency etc must meet the technic...

Page 14: ...leakage of electrolyte or fire Do not expose battery to open flame 1 2 2 Response to Emergency Situations The battery pack comprises multiple batteries that are designed to prevent hazards resulting...

Page 15: ...attery inverter or wiring is submerged Do not use submerged battery again and contact the service engineer 1 3 Requirements for Operator The operation and wiring for inverter should be performed by qu...

Page 16: ...and reliability of the inverter So please avoid using the inverter in the following environment for a long time The place where beyond the specification operating temperature 30 60 relative humidity 0...

Page 17: ...harge and discharge are use DC DC circuit Charge and discharge are share a main circuit for two way flow of energy DC AC circuit work as inverter when grid tied and off grid or work as rectifier when...

Page 18: ...eans 230Vac A means 110Vac Figure2 2 Model meaning of the inverter Battery iStoragE B8 iStoragE series PV storage inverter B8 means battery capacity is 8 2Kwh B16means battery capacity is16 4Kwh And s...

Page 19: ...than 55 50 5 the battery charging power is determined by PV power supply power Self production mode When the energy generated by PV array is sufficient PV array will supply power for load in advance...

Page 20: ...ley period In the peak period set to self production mode in the valley period set to backup mode in the other period the battery power is 0 and the PV array will supply power for grid if it still hav...

Page 21: ...erved Kehua Data Co Ltd 13 2 2 1 LED Signals Inverter Figure2 6 Inverter LED Signals Table2 1 Illustration of the inverter LED Status Illustration OFF Standby Red On fault Blue On The system works nor...

Page 22: ...Illustration Blue The battery capacity is 25 The battery capacity is 50 The battery capacity is 75 The battery capacity is 100 Red Error for detail please see Table6 2 2 2 2 External Terminal Illustr...

Page 23: ...DC SWITCH DC switch Optional PV DC input terminal WIFI WIFI port Reserved It is used to monitor the running status of the inverter COM Connect with DRM METER BMS Parall Parall reserved have parallel f...

Page 24: ...to connect with load Battery terminals illustration Figure2 9 Battery terminals location Table2 4 Inverter terminals illustration NO Mark Illustration Remarks BAT DC input terminal It is used to conn...

Page 25: ...OFF for 5 minutes and measure the voltage of DC busbar by multimeter only when the voltage less than 10V the maintenance can be done When maintenance or wiring the DC switch must be disconnected 2 3 A...

Page 26: ...Data Co Ltd PV1 PV inverter PV Meter iStoragE Battery Pack Grid Load Grid Meter iStoragE Wifi Module Breaker Breaker Figure2 11 AC coupled systems PV3 PV inverter PV Meter iStoragE Battery Pack Grid L...

Page 27: ...s the installation of the device including installation process installation preparation transportation and unpacking installation procedure electrical connection and checking etc 3 1 Installation Pro...

Page 28: ...ion PV Energy Storage Inverter iStoragE Series User Manual 20 All rights reserved Kehua Data Co Ltd 3 2 Installation Preparation 3 2 1 Tools Tools The installation tools must be insulated to avoid ele...

Page 29: ...shine its temperature will rise quickly so do not install the inverter under directly sunshine 2 It is suggested to install the inverter under shade as shown in Figure3 2 to max the inverter lifespan...

Page 30: ...ies User Manual 22 All rights reserved Kehua Data Co Ltd Figure3 3 Installation space unit mm 3 2 4 Installation Way Figure3 4 Installation way 3 3 Transportation and Unpacking 3 3 1 Transportation Th...

Page 31: ...e device has been tested and checked strictly but it still may be damaged during transporting so please check it carefully Inspect the device s appearance if any shipping damage is found report it to...

Page 32: ...tallation The battery pack is heavy There is risk of injury if the battery pack is lifted incorrectly or dropped while being transported or when attaching it to or removing it from the wall bracket 3...

Page 33: ...unit mm Step 3 Place the battery positioning paper against the wall and the bottom against the floor and mark the positions of the two drill holes as shown in Figure3 8 Figure3 8 Mark the battery dril...

Page 34: ...gure3 9 Insert the screw anchors Step 5 Attach the battery wall bracket to the wall using the screws with the tool of hexagon sleeve as shown in Figure3 10 Figure3 10 Install the wall bracket Step 6 I...

Page 35: ...a Co Ltd 27 Figure3 11 Install the cardboard limit board Step 7 Place the battery against the wall align the holes at the battery side to the screw holes of the wall bracket Step 8 Tighten the wall br...

Page 36: ...4 batteries in a system Please install extra batteries one by one also batteries can be stacked up to two batteries per column it is forbidden to stack 3 batteries from top to bottom Column installat...

Page 37: ...Step 2 Place the battery positioning paper against the wall and the bottom with notch against the below battery pack Repeat 3 4 1 Step 1 3 4 1 Step 8 Figure3 15 Place the battery positioning paper St...

Page 38: ...3 Installation PV Energy Storage Inverter iStoragE Series User Manual 30 All rights reserved Kehua Data Co Ltd Figure3 16 Install the upper battery Figure3 17 Mounting more batteries...

Page 39: ...a Data Co Ltd 31 End 3 4 3 Inverter Installation Step 1 Align the bottom of the inverter s positioning paper with the notch of the battery top mark the positions of the drill holes on the paper plate...

Page 40: ...rt 5 screw anchors into the drill holes Figure3 20 Insert the screw anchors Step 3 Attach the wall bracket to the wall using the screws with the tool of hexagon sleeve as shown in Figure3 21 Figure3 2...

Page 41: ...5 Electrical Connection PV3 PV inverter PV Meter iStoragE Battery Pack Grid Load Grid Meter iStoragE Wifi Module Breaker Breaker PV 1 PV 2 Figure3 23 Electrical Connection 3 5 1 Wire Requirement The...

Page 42: ...r outdoor use 0 12 0 2 mm2 AWG26 AWG24 N A Delivered with the battery pack 3 1 Signal cable Standard network cable in the industry recommended type Cat5e FTP UV resistant for outdoor use 0 12 0 2mm2 A...

Page 43: ...RM communication connection with inverter 3 For AUX communication connection with inverter 3 5 2 External Grounding Connection The external grounding terminal is as shown in the 7 of Figure2 8 The ext...

Page 44: ...ore than 20A Switch off the DC switch and external DC switches before connecting the PV array Ensure that the connection between PV array and the inverter at positive pole and negative pole is correct...

Page 45: ...egative connection lead the positive and negative wires go through corresponding lock nut and then insert the positive wire and negative wire into the positive metal terminal and negative metal termin...

Page 46: ...ge and check if the positive and negative is connected properly and if the voltage within the input range of the inverter Step 6 Insert the positive connector and negative connector to the PV and PV t...

Page 47: ...reserved Kehua Data Co Ltd 39 3 5 4 Battery Connection Battery power connection Figure3 31 Connect the BAT connector Battery pack expansion Step 1 Connect the power cables and BMS communication from b...

Page 48: ...erters shares an AC switch It s forbidden to connect with load between inverter and AC switch To ensure the inverter can be disconnected with load safely we suggest equipping independent dipolar switc...

Page 49: ...to avoid wrong connection If using the wires of other color please confirm the corresponding connection relationship Step 3 Insert the AC wire into the equipped 90 terminal and crimp them by crimping...

Page 50: ...ndingly Step 5 Insert the terminals with different color conductors to the holes of the respective polarity and tighten them one by one using the torque of 2 Nm with tool of cross recessed screwdriver...

Page 51: ...ase pay attention to the gap on the AC connector and make it align the heave on the GRID port avoid damaging the connector End 3 5 6 WIFI Connection If the inverter is equipped with WIFI insert it to...

Page 52: ...the use of WIFI please see the built in user manual in the packaging of WIFI 3 5 7 Communication Port Connection Optional COM port can set to DRM and RS485 communication port they all adopt RJ45 plug...

Page 53: ...l DRM adapter s RJ45 plug must be short connected together RS485 communication port RS485 communication port is used to communicate with smart meter to achieve anti countercurrent The connection betwe...

Page 54: ...rt of current transformer in the meter I Connect to I port of current transformer in the meter 5 RS485 A Connect to RJ45 s pin6 of COM port in the inverter 6 RS485 B Connect to RJ45 s pin5 of COM port...

Page 55: ...Kehua Data Co Ltd 47 Figure3 44 Insert the communication port Step 2 lock the screw M4 on wiring cover plate as shown in Figure3 45 Figure3 45 Tighten the wiring cover plate Step 3 If the left and rig...

Page 56: ...d Kehua Data Co Ltd Figure3 46 Pad the gasket End 3 6 Check the Installation After installation check the following items Check if the connection of DC input AC output and communication wire are right...

Page 57: ...ep 1 Login the following website to download the APP and do WIFI configuration Download APP APPSTORE https apps apple com cn app wisesolar plus id1510470362 GOOGLE PLAY https play google com store app...

Page 58: ...rights reserved Kehua Data Co Ltd Figure4 1 Home interface Step 3 Click the plant to enter the Plant details interface as shown in Figure4 2 Figure4 2 Plant details interface Step 4 After that click t...

Page 59: ...ual 4 APP Operation All rights reserved Kehua Data Co Ltd 51 Figure4 3 Device list 4 2 Inverter Information Query Step 1 After performing the above steps click corresponding SN to view the inverter in...

Page 60: ...wn the interface and click the More button to see more information such as PV information BAT information INV information and Grid information Figure4 5 Inverter information interface 4 2 1 Running In...

Page 61: ...al 4 APP Operation All rights reserved Kehua Data Co Ltd 53 Figure4 6 PV information Battery Information In the battery information item you can view battery voltage battery current battery power etc...

Page 62: ...ter information In the inverter information item you can view total grid tied energy grid current grid side load voltage etc as shown in Figure4 8 Figure4 8 Inverter information Grid information In th...

Page 63: ...al 4 APP Operation All rights reserved Kehua Data Co Ltd 55 Figure4 9 Grid information 4 2 2 Status Information In the status information item you can view battery information and device information a...

Page 64: ...to enter the control interface as shown in Figure4 11 Figure4 11 Inverter information The control interface contains basic parameter setting system setting battery related setting grid related setting...

Page 65: ...nverter iStoragE Series User Manual 4 APP Operation All rights reserved Kehua Data Co Ltd 57 Figure4 12 Basic parameter setting System setting In the system setting item you can set system time Figure...

Page 66: ...a Co Ltd Battery related setting In the battery related setting item you can set battery charge and discharge power Figure4 14 Battery related setting Grid related setting In the grid related setting...

Page 67: ...Energy Storage Inverter iStoragE Series User Manual 4 APP Operation All rights reserved Kehua Data Co Ltd 59 Figure4 15 Grid related setting Charge and discharge setting Figure4 16 Charge and dischar...

Page 68: ...Energy Storage Inverter iStoragE Series User Manual 60 All rights reserved Kehua Data Co Ltd Peak period setting Figure4 17 Peak period setting External control period setting Figure4 18 External cont...

Page 69: ...t the inverter you should set the inverter function via APP Step 4 When the DC and AC supply power normally the inverter will prepare to start At first the inverter will check the inner parameters and...

Page 70: ...inverter The temperature of some parts on the inverter is too high and may cause scald injury After shut down the inverter and wait until it cooling down then do the maintenance and clean Do not clea...

Page 71: ...e morning it may be caused by wet weather 2 Use a multimeter to test the impedance of the ground to the housing If the impedance is not close to 0 confirm that there is a connection problem between th...

Page 72: ...contact customer service Inner Over temperature Ambient temperature is too high 1 Try to lower the ambient temperature 2 Make sure that the inverter is installed according to the manual and there is n...

Page 73: ...tity PV2hardwareover current PV2 hardware current exceed allow value 1 Try to lower PV power 2 Restart the inverter to see if the fault still exists If it still exists contact customer service MPPT Ov...

Page 74: ...uce the BAT power 2 Restart the inverter to see if the fault still exists If it still exists contact customer service BMS communication fault Abnormal communication with BMS Check whether communicatio...

Page 75: ...lue 1 Check whether the off grid output terminal is overloaded short circuited or has impact load 2 Restart the inverter to see if the fault still exists If it still exists contact service Inverter cu...

Page 76: ...ase lock abnormal Phase lock abnormal 1 Check whether grid abnormal 2 check whether grid wiring abnormal 3 Restart the inverter to see if the fault still exists If it still exists contact service Alar...

Page 77: ...arm instruction from BMS Check code position question from BMS on APP Heat sink over temperature alarm Temperature is too high to reach the rate drop point 1 Check whether the environment temperature...

Page 78: ...oduct is operating for a while if the temperature is abnormal please contact manufacturers Table6 2 Battery Error Description LED Indictor Error Code LED display Description Troubleshooting Red LEDs f...

Page 79: ...ubleshooting Error 08 LMU disconnect slave Reconnect the BMS communication cable Error 09 SN missing Call for service Error 10 LMU disconnect master Reconnect the BMS communication cable Error 11 Soft...

Page 80: ...information mentioned in Table6 1 please shut down the inverter refer to 5 2 Shutdown 5 minutes later restart the inverter refer to5 1 Startup If the alarm status is not removed please contact our lo...

Page 81: ...tion DO NOT carry the device with the objects that is inflammable explosive or corrosive DO NOT put the device in the open air while midway transshipment Leaching or mechanical damage by rain snow or...

Page 82: ...r W 5400 7500 9000 Vmax PV V dc 580 MPPT voltage range V dc 100 550 Isc PV A dc 2 9 2 13 3 2 15 Full load MPPT voltage range V dc 300 450 300 450 300 450 Startup voltage V dc 100 No of MPPTs 2 2 2 Str...

Page 83: ...rated power 0 99 Power factor adjusting range 0 8 ahead 0 8 lag 0 8 rated power THDi 3 rated power 5 load is 50 rated power Backup output Rated output power W 3600 5000 6000 Max apparent power VA 3600...

Page 84: ...W H D mm 580 280 230 Weight kg 16 3Kg Installation Wall mounting Insulation No transformer Degree of protection IP65 Self consumption at night 10W Operating temperature range INV 30 60 If the temperat...

Page 85: ...ecifications are subject to change without prior notice A 2 Technical Specifications of Battery Model Item iStoragE B8 BAT input Max input voltage V dc 450 Input voltage range V dc 85 450 voltage rang...

Page 86: ...erature higher than 45 or lower than 10 the inverter needs to decrease rated power to use Operating humidity range 0 95 Cooling Natural Maximum operating altitude 3000m 3000m derating Noise emission t...

Page 87: ...ions All rights reserved Kehua Data Co Ltd 79 B Acronyms and Abbreviations A AC Alternating Current C CE Conformite Europeenne D DC Direct Current DSP Digital Signal Processor I IEC International Elec...

Page 88: ...rage Inverter iStoragE Series User Manual 80 All rights reserved Kehua Data Co Ltd MPPT Maximum Power Point Tracking P PE Protective Earthing PV Photovoltaic R RS485 Recommend Standard485 T THDi Total...

Page 89: ...4402 03766 001...

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