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KEHUA TECH iStoragE Series User Manual

Energy storage system
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iStoragE Series
Energy Storage System
User Manual
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  • Page 1 Series Energy Storage System User Manual Co., Ltd. All rights reserved ©Xiamen Kehua Digital Energy Tech...
  • Page 3 Copyright © Xiamen Kehua Digital Energy Tech Co., Ltd. 2022. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any means without prior written consent of Xiamen Kehua Digital Energy Tech Co., Ltd. Trademarks and Permissions and other Kehua trademarks are the licensed trademarks of Xiamen Kehua Digital Energy Tech Co., Ltd.
  • Page 4 User Manual Foreword Summaries Thank you for choosing the iStoragE series energy storage system (hereinafter referred to as iStoragE)! This document gives a description of the iStoragE series energy storage system, including the features, performance, appearance, structure, working principles, installation, operation and maintenance.
  • Page 5 Series Energy Storage System User Manual Foreword Symbol Description 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.

  • Page 6: Table Of Contents

    Series Energy Storage System Contents User Manual Contents 1 Safety Description......................... 1 1.1 Safety Announcements ............................. 1 1.1.1 Use Announcements ..........................1 1.1.2 Inverter Symbol Illustration ........................3 1.1.3 Protection for PV Array .......................... 4 1.1.4 ESD Protection ............................4 1.1.5 Grounding Requirements ........................
  • Page 7 Series Energy Storage System User Manual Contents 2.3 Application Scenarios ............................. 16 3 Installation............................ 18 3.1 Installation Process ............................18 3.2 Installation Preparation ..........................19 3.2.1 Tools ..............................19 3.2.2 Installation Environment ........................20 3.2.3 Installation Space ..........................20 3.2.4 Installation Way ............................
  • Page 8 Series Energy Storage System Contents User Manual 4.3 Control Interface ............................62 4.3.1 Basic Parameter Setting ........................63 4.3.2 System Setting ............................67 4.3.3 Battery Setting ............................68 4.3.4 Grid Setting ............................68 5 Startup and Shutdown ....................... 69 5.1 Startup ................................

  • Page 9: Safety Description

    Series Energy Storage System User Manual 1 Safety Description 1 Safety Description This chapter mainly introduces the safety announcements. Prior to performing any work on the device, please read the user manual carefully, follow the operation and installation instructions and observe all danger, warning and safety information.
  • Page 10 The surface temperature of the inverter may reach to 60℃. During running, please don't touch the surface to avoid scald. No liquid or other objects are allowed to enter the inverter, or, it may cause iStoragE series energy storage system damage.

  • Page 11: Inverter Symbol Illustration

    Series Energy Storage System User Manual 1 Safety Description In case fire, please use dry power fire extinguisher. If using liquid fire extinguisher, it may cause electric shock. 1.1.2 Inverter Symbol Illustration Table1-1 Inverter symbol illustration Symbol Illustration Beware of a danger zone This symbol indicates that the product must be additionally grounded if additional grounding or equipotential bonding is required at the installation site.

  • Page 12: Protection For Pv Array

    Series Energy Storage System 1 Safety Description User Manual Symbol Illustration Beware of hot surface The product can get hot during operation. 1.1.3 Protection for PV Array When install PV array in daytime, it necessary to cover the PV array by light-proof material, or the PV array will generate high voltage under sunshine.

  • Page 13: Moisture-Proof Protection

    Series Energy Storage System User Manual 1 Safety Description  The device must be connected to protection grounding permanently.  Before operation, check the electrical connection to ensure the inverter is grounded reliably. 1.1.6 Moisture-proof Protection Moisture incursion may cause the inverter damage! Observe the following items to ensure the inverter works normally.

  • Page 14: Measurement Under Operation

    Series Energy Storage System 1 Safety Description User Manual 1.1.9 Measurement Under Operation There exists high voltage in the device. If touching device accidently, it may cause electric shock. So, when perform measurement under operation, it must take protection measure (such as wear insulated gloves, etc.)

  • Page 15: Requirements For Operator

    Do not use submerged battery again and contact the service engineer. 1.3 Requirements for Operator The operation and wiring for iStoragE series energy storage system should be performed by qualified person, which is to ensure that the electrical connection meets the related standards.

  • Page 16: Environment Requirements

     Know well about the related standards of local country and district. 1.4 Environment Requirements Avoid the iStoragE series energy storage system suffering directly sunshine, rain or snow to prolong the service life (detail please see 3.2.2 Installation Environment). If the installation environment does not meet the requirement, the guarantee time may be influenced.

  • Page 17: Overview

    This chapter mainly introduces the device features, appearance, operating mode, etc. 2.1 Product Intro With iStoragE series energy storage system, it is possible to effectively manage energy in users’ home day and night. This energy storage system will provide a complete energy solution with multiple working modes which meet different application scenarios.

  • Page 18: Model Meaning

    Series Energy Storage System 2 Overview User Manual 2.1.1 Model Meaning Inverter iStoragE □□ □□□□ Output power N/A means 230Vac A means 110Vac N/A means single phase 3 means three-phase iStoragE series energy storage system Figure2-2 Model meaning of inverter...

  • Page 19: Appearance And Structure

    Series Energy Storage System User Manual 2 Overview Energy scheduling mode iStoragE product provides charge and discharge time settings for customers，so they can pre-charge when the price of power is low, and save the energy for use when grid power prices are high.

  • Page 20: Led Signals

    Series Energy Storage System 2 Overview User Manual Figure2-5 Appearance of the battery 2.2.2 LED Signals Inverter Table2-1 Illustration of the inverter LED Status LED display Illustration Inverter power off. ON: inverter fault. ON: the system works normally. Blue Flicker 1s: inverter alarm.

  • Page 21: Inverter Structure Layout Illustration

    Series Energy Storage System User Manual 2 Overview Battery Table2-2 Illustration of the battery LED Status LED display Illustration SOC≤5% The first line of the LED indicator flashes every 10s. 5%＜SOC≤30% The first line of the LED indicator is always on.
  • Page 22 Series Energy Storage System 2 Overview User Manual Figure2-6 Inverter structure layout diagram Table2-3 Inverter terminals illustration Mark Illustration Remarks Meter1 and Meter 2 are the ① Meter1/ Meter2 Monitor grid side power. same portal. ② Inverter demand response modes.
  • Page 23 Series Energy Storage System User Manual 2 Overview Mark Illustration Remarks ⑨ GRID AC output terminal It is used to connect with grid. ⑩ BACKUP AC output terminal It is used to connect with load. ⑪ PV1/PV2 DC input terminal It is used to connect with PV.

  • Page 24: Application Scenarios

     Before maintenance, the BAT breaker must be OFF, 5 minutes after the indicator is off, the maintenance can be done. 2.3 Application Scenarios The iStoragE series energy storage system can be applied in DC-coupled system, AC-coupled system and fully off-grid system, as shown in Figure2-9, Figure2-10 and Figure2-11. Co., Ltd.
  • Page 25 Series Energy Storage System User Manual 2 Overview Meter Grid INV+BAT On-grid load PV array Off-grid load Figure2-9 DC-coupled system Meter Grid Meter INV+BAT Off-grid load PV array PV array On-grid load Figure2-10 AC-coupled system Off-grid load PV array...

  • Page 26: Installation

    Series Energy Storage System 3 Installation User Manual 3 Installation This chapter introduces the installation of the device, including installation process, installation preparation, transportation and unpacking, installation procedure, electrical connection and checking, etc. 3.1 Installation Process Start Installation preparation...

  • Page 27: Installation Preparation

    Series Energy Storage System User Manual 3 Installation 3.2 Installation Preparation 3.2.1 Tools Tools Co., Ltd. All rights reserved ©Xiamen Kehua Digital Energy Tech...

  • Page 28: Installation Environment

    Series Energy Storage System 3 Installation User Manual The installation tools must be insulated to avoid electric shock. When installing, please wear safety gloves and safety shoes. When installing, please ware safety goggles and a dust mask to prevent dust from entering your eyes.

  • Page 29: Installation Way

    Series Energy Storage System User Manual 3 Installation Figure3-3 Installation space (unit: mm) 3.2.4 Installation Way Figure3-4 Installation way 3.3 Transportation and Unpacking 3.3.1 Transportation The device should be transported by trained professional. Co., Ltd. All rights reserved ©Xiamen Kehua Digital Energy Tech...

  • Page 30: Unpacking And Checking

    Series Energy Storage System 3 Installation User Manual During transporting, please take care and avoid impacting or dropping. 3.3.2 Unpacking and Checking Select the unpacking site in advance. In principle, the unpacking site should be as close to the installation site as possible.

  • Page 31: Installation

    AC wiring cover. If the iStoragE series energy storage system needs to be stored for a long time after unpacking, it is necessary to pack the device by original package and save properly.

  • Page 32: Single Battery Installation

    Series Energy Storage System 3 Installation User Manual 3.4.1 Single Battery Installation Step 1 Lift the battery pack using the handles at the two sides, place it to assigned site. Do not put the battery pack upside down on the ground.
  • Page 33 Series Energy Storage System User Manual 3 Installation Figure3-9 Mark the battery drilling position Drill 2 holes on the wall with drill Φ 10, insert 2 expansion plugs into the drill holes, as shown in Step 4 Figure3-10. Figure3-10 Insert the expansion plugs...
  • Page 34 Series Energy Storage System 3 Installation User Manual Figure3-11 Install the wall bracket Step 6 Install the battery support rack on the top of the back of the battery pack with two screws M5, as shown in Figure3-12. Figure3-12 Install the battery support rack...

  • Page 35: More Batteries Installation

    Series Energy Storage System User Manual 3 Installation Figure3-13 Tighten the wall bracket If the floor of installation site is uneven, please use gaskets to keep the bottom of battery pack level. ----End 3.4.2 More Batteries Installation You can install extra batteries up to 6 batteries in a system.
  • Page 36 Series Energy Storage System 3 Installation User Manual Step 2 Tighten the battery cover plate of each battery with three screws M4. Figure3-14 Fasten battery cover plate Step 3 Place the battery against the wall, align the holes at the battery side to the screw holes of the wall bracket.
  • Page 37 Series Energy Storage System User Manual 3 Installation Figure3-16 Distance between the batteries ----End Stack installation Step 1 Repeat 3.4.1 Step 1~3.4.1 Step 6. Step 2 Tighten the battery cover plate of each battery with three screws M4. Figure3-17 Fasten battery cover plate...
  • Page 38 Series Energy Storage System 3 Installation User Manual Figure3-18 Tighten the wall bracket Step 5 After install the single battery, then lock the four screws M6 on top of the below battery pack, as shown in Figure3-19. Figure3-19 Lock the screw on top...
  • Page 39 Series Energy Storage System User Manual 3 Installation Figure3-20 Place the battery positioning paper Step 7 Mark the positions of the two drill holes, as shown in Figure3-21. Figure3-21 Mark the battery drilling position Step 8 Repeat 3.4.1 Step 4~3.4.1 Step 6.
  • Page 40 Series Energy Storage System 3 Installation User Manual Step 9 Place the battery against the wall, the bottom limit holes of the upper battery pack should match the screw on the top of the below battery pack, as shown in Figure3-22.

  • Page 41: Inverter Installation

    Series Energy Storage System User Manual 3 Installation Figure3-24 Multiple batteries stacking installation ----End 3.4.3 Inverter Installation Step 1 Repeat 3.4.1 Step 1~3.4.1 Step 8. Step 2 Align the bottom of the inverter's positioning paper with the notch of the battery top.
  • Page 42 Series Energy Storage System 3 Installation User Manual Step 3 Mark the positions of the drill holes on the paper plate. Figure3-26 Mark the inverter drilling position Cover the top of the battery with plastic bag and drill seven holes on the wall with drill Φ8 (the depth Step 4 of the hole range is 40~45mm), insert seven expansion plugs (8*40) into the drill holes.
  • Page 43 Series Energy Storage System User Manual 3 Installation Figure3-28 Install inverter wall bracket Step 6 Hold the inverter using the handles at two sides, attach the inverter onto the wall bracket tilted slightly downwards. Step 7 Tighten the wall bracket and the inverter with screw M6.

  • Page 44: Electrical Connection

    Series Energy Storage System 3 Installation User Manual 3.5 Electrical Connection Figure3-30 Electrical connection 3.5.1 Components Requirement Table3-1 Recommended isolator, overcurrent protection device, and RCD specification Components Specification Scope of supply Integrated in the inverter ① PV DC switch...
  • Page 45 Series Energy Storage System User Manual 3 Installation Table3-2 Recommended wire specification Cross-sectional Outer No. Cable Type Scope of supply area Diameter Standard PV cable in Battery the industry Integrated in the power 6~10 mm (recommended type: battery pack...

  • Page 46: External Grounding Connection

    Series Energy Storage System 3 Installation User Manual 3.5.2 External Grounding Connection The external grounding terminal of inverter and battery pack are as shown in ⑥ of Figure2-6 and the ③ of Figure2-7. The external grounding wire cannot replace the PE wire of AC output terminal, they must be connected with ground reliably.

  • Page 47: Dc Input (Pv) Connection

    Series Energy Storage System User Manual 3 Installation Figure3-33 Battery pack external grounding wire connection Each battery pack can be connected to ground separately, or connected to ground after being connected in series. ----End 3.5.3 DC Input (PV) Connection ...
  • Page 48 Series Energy Storage System 3 Installation User Manual Use the equipped PV connector and metal terminal to connect the PV input. The PV connecter includes positive connecter and negative connector, they match the corresponding positive metal terminal and negative terminal, corresponding procedure as follows.
  • Page 49 Series Energy Storage System User Manual 3 Installation Step 4 Tighten the sealing nuts of positive connector and negative connector to the corresponding insulation crusts respectively, as shown in Figure3-37. Figure3-37 Tighten the sealing nuts Step 5 Measure the voltage and check if the positive and negative is connected properly and if the voltage within the input range of the inverter.

  • Page 50: Dc Input (Battery) Connection

    Series Energy Storage System 3 Installation User Manual 3.5.4 DC Input (Battery) Connection Battery power connection Insert the positive connector and negative connector (blue metal terminal) to the BAT + and BAT– terminals (as shown in Figure3-39) and tighten them. If there has a click sound, it means that the connector have been inserted properly.
  • Page 51 Series Energy Storage System User Manual 3 Installation Figure3-41 Stack installation wiring The color of the cable shown above is just for reference, for details please see the actual product. Step 2 Install the terminal resistance to any one of COM ports of the first battery.

  • Page 52: Ac Output Connection

    Series Energy Storage System 3 Installation User Manual 3.5.5 AC Output Connection It's forbidden that several inverters 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 switch for each inverter to protect the inverter.
  • Page 53 Series Energy Storage System User Manual 3 Installation Step 2 Insert the AC wire into the equipped 90° terminal and crimp them by crimping tool, as shown in Figure3-44. Figure3-44 Stripping diagram of external AC wire (unit: mm) Step 3...

  • Page 54: Wifi Connection

    Series Energy Storage System 3 Installation User Manual Figure3-46 Tighten the AC wiring cover ----End 3.5.6 WIFI Connection The inverter is equipped with WIFI, install it to the WIFI port (as shown in Figure3-47) to monitor on the internet. The monitor way is as shown in Figure3-47.

  • Page 55: Communication Port Connection

    Series Energy Storage System User Manual 3 Installation Smart phone Inverter Internet Server Router PC monitor Inverter (with WIFI) Figure3-48 Communication way For the use of WIFI, please see the built-in user manual in the packaging of WIFI. 3.5.7 Communication Port Connection Communication ports include DRM port, Meter port and BMS port, they all adopt RJ45 plug to connect.
  • Page 56 Series Energy Storage System 3 Installation User Manual 1--8 RJ45 port RJ45 plug Pin definition of RJ45 plug: 1 2 3 4 5 6 7 8 PIN 1: White orange – DRM1/5 PIN 2: Orange - DRM 2/6 PIN 3: White green – DRM3/7 PIN 4: Blue –...
  • Page 57 Series Energy Storage System User Manual 3 Installation Meter port Meter communication port is used to communicate with smart meter to achieve zero-export. The connection between smart meter and inverter and grid is as shown in Figure3-52, Figure3-53, Figure3-54, Figure3-55.
  • Page 58 Series Energy Storage System 3 Installation User Manual Figure3-54 Connection diagram between communication smart meter and inverter and grid (three-phase) Figure3-55 Connection diagram between communication smart meter and inverter and grid (three-phase + single phase) For the actual wiring of the smart meter, see the diagram on the right side of the meter.
  • Page 59 Series Energy Storage System User Manual 3 Installation CT direction is: inverter → grid, please connected properly! Smart meter setting  If the meter used in the grid side of iStoragE product, address is set to A-001.  If the meter used in the PV inverter grid side, address is set to A-002.
  • Page 60 Series Energy Storage System 3 Installation User Manual Illustration RS485: B. Connect to RJ45's pin5 of communication port in the inverter. Table3-5 Pin illustration of smart meter (three- phase) Illustration Connect to phase-L of GRID port in the inverter and L1 of grid output.

  • Page 61: Inverter Wiring Cover Plate Installation

    Series Energy Storage System User Manual 3 Installation → Short press*1 No press Address → Short press*1 → Value display Long press*1 → Short press*1 → Short press*1 645Protocol → Short press*1 Figure3-56 The setting of the smart meter address (single phase) →...

  • Page 62: Check The Installation

    Series Energy Storage System 3 Installation User Manual Figure3-59 Tighten the wiring cover plate Step 2 If the left and right sides of the inverter and battery are slightly uneven, the gasket can be used to correct. Figure3-60 Pad the gasket ----End 3.7 Check the Installation...

  • Page 63: App Operation

    Series Energy Storage System User Manual 4 APP Operation 4 APP Operation This chapter is mainly introduces the operation of APP. 4.1 First Startup Step 1 Login the following website to download the APP and do WIFI configuration.  Download APP APPSTORE: https://apps.
  • Page 64 Series Energy Storage System 4 APP Operation User Manual 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 the "Device List" button to enter the device list interface, as shown in Figure4-3.

  • Page 65: Inverter Information Query

    Series Energy Storage System User Manual 4 APP Operation Figure4-3 Device list ----End 4.2 Inverter Information Query Step 1 After performing the above steps, click corresponding SN to view the inverter information. Co., Ltd. All rights reserved ©Xiamen Kehua Digital Energy Tech...
  • Page 66 Series Energy Storage System 4 APP Operation User Manual Figure4-4 Inverter information interface Step 2 Pull-down 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 ----End Co., Ltd.

  • Page 67: Running Information

    Series Energy Storage System User Manual 4 APP Operation 4.2.1 Running Information PV information In the PV information item, you can view PV voltage, PV current and PV power, etc. as shown in Figure4-6. Figure4-6 PV information Battery information In the "Battery information"...
  • Page 68 Series Energy Storage System 4 APP Operation User Manual Figure4-7 Battery information Inverter 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 Co., Ltd.

  • Page 69: Status Information

    Series Energy Storage System User Manual 4 APP Operation Grid information In the running information item, you can view load voltage, load current, grid-tied apparent power, etc. as shown in Figure4-9. Figure4-9 Grid information 4.2.2 Status Information In the "Status information" item, you can view battery information and device information, as shown in Figure4-10.

  • Page 70: Control Interface

    Series Energy Storage System 4 APP Operation User Manual Figure4-10 Status information 4.3 Control Interface Click the "Control" button in the inverter information interface to enter the control interface, as shown in Figure4-11. Figure4-11 Inverter information Co., Ltd. All rights reserved ©Xiamen Kehua Digital Energy Tech...

  • Page 71: Basic Parameter Setting

    Series Energy Storage System User Manual 4 APP Operation The control interface contains basic parameter setting, system setting, battery setting, grid setting. 4.3.1 Basic Parameter Setting Basic parameter setting contains ON/OFF setting, mode setting and BMS communication setting. Figure4-12 Basic parameter setting Mode can be set to: time of use mode, backup mode, self consumption mode, energy scheduling mode and external control mode.
  • Page 72 Series Energy Storage System 4 APP Operation User Manual Figure4-13 Time of use mode ----End Backup mode Step 1 Choose "Disable" in "External control mode". Step 2 Choose "Backup mode" in "Work mode". Figure4-14 Backup mode Co., Ltd. All rights reserved ©Xiamen Kehua Digital Energy Tech...
  • Page 73 Series Energy Storage System User Manual 4 APP Operation Self consumption mode Step 1 Choose "Disable" in "External control mode". Step 2 Choose "Self consumption" in "Work mode". Figure4-15 Self consumption mode Energy scheduling mode Step 1 Choose "Disable" in "External control mode".
  • Page 74 Series Energy Storage System 4 APP Operation User Manual Figure4-16 Energy scheduling mode ----End External control mode Step 1 Choose "Enable" in "External control mode". Step 2 Choose "Battery control first" or "Grid control first". Step 3 Set the corresponding time period.

  • Page 75: System Setting

    Series Energy Storage System User Manual 4 APP Operation ----End Battery Backup Power Setting In grid-tied mode, the setting can prevent inverter from releasing the backup power of battery pack. Once the SOC value of battery reaches the set value, the load is powered only by PV side or grid.

  • Page 76: Battery Setting

    Series Energy Storage System 4 APP Operation User Manual 4.3.3 Battery Setting In the battery setting item, you can set battery charge and discharge power. Figure4-20 Battery setting 4.3.4 Grid Setting In the grid setting item, you can set grid mode including P-V mode, Q-V mode, SPF mode and schedule mode.

  • Page 77: Startup And Shutdown

    Series Energy Storage System User Manual 5 Startup and Shutdown 5 Startup and Shutdown This chapter introduces how to start and shut down the device. 5.1 Startup Step 1 Check whether the PV, battery and grid wiring correct. Step 2 Switch on the battery breaker, long press the BAT.

  • Page 78: Cei Self-Check Function

    Series Energy Storage System 5 Startup and Shutdown User Manual 5.2 CEI Self-Check The iStoragE product has the CEI self-check function, which is required only in Italy. Other countries do not need to operate. It is recommended to perform the self-check operation when the grid is normal. Self-check function of CEI is integrated in Master APP for Italy safety country requirement.
  • Page 79 Series Energy Storage System User Manual 5 Startup and Shutdown Figure5-2 Connect to WLAN Step 3 Click "View device" in the logger interface, and then click "Customer". Figure5-3 Enter the customer interface Co., Ltd. All rights reserved ©Xiamen Kehua Digital Energy Tech...
  • Page 80 Series Energy Storage System 5 Startup and Shutdown User Manual Step 4 Click "Start" in the monitor interface and click "Done" in the popup. Then the device starts self check. Figure5-4 Start the self check function Step 5 Click "More" in the "Monitor" interface to view the self check info.

  • Page 81: Shutdown

    Series Energy Storage System User Manual 5 Startup and Shutdown ----End 5.3 Shutdown Step 1 Powering off the inverter on the APP. Step 2 Switch off the battery breaker, long press the battery button until the battery indicator light is off.

  • Page 82: Maintenance And Troubleshooting

    This chapter mainly introduces the maintenance and troubleshooting for device. 6.1 Maintenance The iStoragE series energy storage system needn’t to be maintained regularly, but the sundries or dust may influence the heat dissipation performance, so, use soft brush to clean the inverter. If the LED indicator is too dirty to view, use a wet cloth to clean them.

  • Page 83: Troubleshooting

    Series Energy Storage System User Manual 6 Maintenance and Troubleshooting Table6-1 Maintenance checklist Check Item Acceptance Criteria Maintenance Interval Product The heat sink of the inverter are free from Semiannually or once per year cleanliness obstacles or dust. Product visible...
  • Page 84 Series Energy Storage System 6 Maintenance and Troubleshooting User Manual Table6-2 Troubleshooting Check item Fault description Solution 1. Check whether the input voltage of PV1 and PV2 exceed 580V. Bus voltage is too DC bus over-voltage high. 2. If not, restart the inverter to see if the fault still exists.
  • Page 85 Series Energy Storage System User Manual 6 Maintenance and Troubleshooting Check item Fault description Solution 1. Check whether neutral-to-ground wire of off-grid side is short-circuited with a When off-grid, Neutral-to-ground multimeter. neutral-to-ground wire abnormal is disconnected. 2. Restart the inverter to see if the fault still exists.
  • Page 86 Series Energy Storage System 6 Maintenance and Troubleshooting User Manual Check item Fault description Solution exists. If it still exists, contact customer service. PV2 reverse PV2 input reversed Check whether PV2 wiring is reversed. connected PV2 voltage exceed Check the PV2 voltage to see if it is exceeds...
  • Page 87 Series Energy Storage System User Manual 6 Maintenance and Troubleshooting Check item Fault description Solution exists, contact service. Battery charge/ 1. Try to reduce the BAT power. discharge current Battery over-current 2. Restart the inverter to see if the fault still detected on software exists.
  • Page 88 Series Energy Storage System 6 Maintenance and Troubleshooting User Manual Check item Fault description Solution 1. Check whether the off grid output terminal is Inverter current overloaded, short circuited or has impact load. Inverter current detected on software over-current exceeds the allowable 2.
  • Page 89 Series Energy Storage System User Manual 6 Maintenance and Troubleshooting Check item Fault description Solution 3. Restart the inverter to see if the fault still exists. If it still exists, contact service. Check whether the actual battery voltage Battery over-voltage...
  • Page 90 Series Energy Storage System 6 Maintenance and Troubleshooting User Manual Check item Fault description Solution 2. Make sure that the inverter is installed according to the manual and there is no shelter around the inverter. 3. After the inverter is powered off and waiting for 30 minutes, then restart it.
  • Page 91 Series Energy Storage System User Manual 6 Maintenance and Troubleshooting LED Indictor Error Code LED display Description Troubleshooting Stop discharging and charging until this code is eliminated Error 3 Hardware error and wait for the temperature to drop. Stop discharging until this...
  • Page 92 Series Energy Storage System 6 Maintenance and Troubleshooting User Manual LED Indictor Error Code LED display Description Troubleshooting Error 03 Hardware error Error 05 Hardware error Circuit switch Switch on circuit switch after Error 06 open powering off the battery.
  • Page 93 Series Energy Storage System User Manual 6 Maintenance and Troubleshooting LED Indictor Error Code LED display Description Troubleshooting Restart battery and in case the Error 14 Insulation fault problem is not resolved, call for service. Restart battery and in case the...

  • Page 94: Package, Transportation And Storage

    Series Energy Storage System 7 Package, Transportation and Storage User Manual 7 Package, Transportation and Storage This chapter introduces the package, transportation and storage of device. 7.1 Package The device is packaged by carton. When packaging, pay attention to the placing direction requirements.
  • Page 95 Series Energy Storage System User Manual 7 Package, Transportation and Storage Battery storage temperature requirement: short-term (with one month) storage in a clean and ventilated room at -20℃~45℃, long-term (within one year) in a clean and ventilated room at 0℃...

  • Page 96: A Technical Specifications

    Series Energy Storage System A Technical Specifications User Manual Technical Specifications A.1 Technical Specifications of Inverter Model iStoragE 3600 iStoragE 5000 iStoragE 6000 Item PV input Max. input power (W) 9000 9000 9000 Max. input voltage (V d.c.) MPPT voltage range (V d.c.) 100~550 Max.
  • Page 97 Series Energy Storage System User Manual A Technical Specifications Model iStoragE 3600 iStoragE 5000 iStoragE 6000 Item Rated input current (A a.c.) 31.2 43.4 52.4 Max. continuous input current (A a.c.) 31.2 43.4 52.4 Rated grid frequency (Hz) 50/60...
  • Page 98 Series Energy Storage System A Technical Specifications User Manual Model iStoragE 3600 iStoragE 5000 iStoragE 6000 Item Rated voltage (V a.c.) Rated output current (A a.c.) 15.6 21.7 26.2 Max. continuous output current (A 15. 6 21.7 26.2 a.c.) Max.
  • Page 99 Series Energy Storage System User Manual A Technical Specifications Model iStoragE 3600 iStoragE 5000 iStoragE 6000 Item Insulation No transformer Protection grade IP65 Self consumption at night <10W INV: -25℃~60℃ (3600/5000: If the temperature higher than 45℃ or lower than -25℃, Operating temperature range the inverter needs to decrease rated power to use;...
  • Page 100 Series Energy Storage System A Technical Specifications User Manual A.2 Technical Specifications of Battery Model iStoragE B8 Item BAT input Max. input voltage (V d.c.) Input voltage range (V d.c.) 85~450 Voltage range with full load (V d.c.) 167-400 Max.

  • Page 101: B Acronyms And Abbreviations

    Series Energy Storage System User Manual B Acronyms and Abbreviations Acronyms and Abbreviations Alternating Current American Wire Gauge Conformite Europeenne Direct Current International Electrotechnical Commission Light-emitting Diode Maximum Power Point Tracking MPPT Co., Ltd. All rights reserved ©Xiamen Kehua Digital Energy Tech...
  • Page 102 Series Energy Storage System B Acronyms and Abbreviations User Manual Protective Earthing Photovoltaic Recommend Standard485 RS485 Total Distortion of the input current THDi waveform Co., Ltd. All rights reserved ©Xiamen Kehua Digital Energy Tech...
  • Page 103 4402-03766 004...

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