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KEHUA TECH iStoragE3 Series Installation Manual

Energy storage system
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Energy Storage System
iStoragE3 Series
Installation Guide

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Summary of Contents for KEHUA TECH iStoragE3 Series

  • Page 1 Energy Storage System iStoragE3 Series Installation Guide...

  • Page 2: Product Intro

    Inverter Battery pack NOTE iStoragE3 series inverter needs to be used with matched battery packs. Based on actual needs, 1 inverter can be used with 1~8 battery packs together, as follows. 1 INV + 1 BAT 1 INV + 2 BAT...

  • Page 3: Led Indicator

    1.2 LED Indicator LED display Illustration LED display Illustration Inverter works normally. Battery pack works normally. Blue indicator on Blue indicator on Battery pack with secondary Inverter with secondary alarm. Flickers in blue and Flickers in blue alarm. red alternately and red alternately Inverter standby or OFF.

  • Page 4: Ventilation Design

    1.4 Ventilation Design Inverter Battery pack Installation Preparation 2.1 Packing List Communication Inverter*1 Left cover panel*1 Right cover panel*1 wire*1 Power wire (+/-)*1 Meter*1 PV connector Communication Base module*1 connector*2 AC connector*2 WIFI/4G*1 Document*1 (+/-)*3 Support*2 Wall bracket *1 Auxiliary tool*1 U gasket (T3.0)*6 U gasket (T1.5)*6 Expansion bolt...

  • Page 5: Installation Environment

    NOTE The used environment will effect the device life span and reliability. To ensure long service life and stable operation, we suggest to install iStoragE3 series device in the environment where has no direct sunshine, rain or snow. CAUTION The installation and operation for iStoragE3 should be accord with the local laws and regulations.

  • Page 6: Installation Space

    The size in above figure is the minimum requirements for heat dissipation, for actual case, please take the space of installation and  maintenance into account. The installation space of iStoragE3 series battery packs and inverter is the same. In above figure, we take 1 INV + 4 BAT as an  example to illustrate.
  • Page 7 CAUTION Ensure that the installed floor is flat and horizontal (flatness within 4mm) and the installed floor horizontal angle  is 0°. If not, please use gasket to adjust the installation surface. Keep the installed place far away from the tube of water, electricity or gas. ...
  • Page 8 Step5 Fasten the base module. 24.3~29.6N m · Step6 Lead the cover plate into the base module and fix it with screws. 2.7~3.3N m · NOTE If the device is installed on the low-lying position and may have the risk of soaking by rain, we suggest to select the support to lift the device to avoid damage for the device.
  • Page 9 Step7 Install the battery packs. 2.7~3.3N m · 4~5N m · ③ 2.7~3.3N m · ① ② Pre-screw Screw Screw 4~5N m · ② 2.7~3.3N m · ① NOTE  The installation of battery pack is the same, in above figure, we take the installation of 2 battery pack as example to illustrate. ...
  • Page 10 Step8 Install the inverter. NOTE Before installing the inverter, it is better to insert the WIFI/4G module. 4~5N m · 1~1.5N m · Step9 Fasten the supports between the inverter and top battery pack. Inverter Top battery pack 2.7~3.3N m ·...
  • Page 11 Step10 Connect the wires of the inverter and battery packs. CAUTION  During wiring, please ensure that the inverter is power off, and the voltage between other pots to BAT+ and BAT- should be lower than 36V.  While connecting the inner wires of system, it is necessary to make the handle on the battery pack vertical to the side and lead the battery +/- and BMS communication wires go through the handle, and then connect them.

  • Page 12: Electrical Connection

    Electrical Connection 4.1 Terminal Layout GRID ⑥ ① BACK UP ⑦ ② PARALLEL DC SWITCH ⑧ ⑨ ③ ⑩ ④ ⑤ BATT. Inverter Mark Illustration Mark Illustration ① ⑦ User load port PV +/- PV input port BACK UP Parallel port ②...
  • Page 13 4.2 Wire Specification Specification Wire name AWG8 Battery power cable Battery communication cable AWG24 PV power cable AWG12 Signal cable AWG24 AC power cable AWG10 PE cable AWG10 4.3 External Grounding Connection Step1 Connect the external grounding terminal of the inverter. GRI D BAC K UP 1.3~1.9N m...
  • Page 14 PV Connection CAUTION ·When installation, it must use the equipped DC terminals to avoid inverter damage. ·It is recommended to use independent switch for each PV input, and before connecting, the switches must be off. We suggest to use the special DC switch (rated voltage is 1000V, rated current is more than 20A). ·Switch off the DC switch and external DC switches before connecting the PV array.
  • Page 15 CAUTION We suggest to use the wires with different color as the positive and negative of PV input to easy distinguish the wires. Step3 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 16 Wiring hole of GRID Step2 Prepare grid connector NOTE If adopt side wiring, it is necessary to lead the grid wire go through the side wiring hole and then crimp the wires.  In following figure, we take multi-core wire as an example to illustrate. ...
  • Page 17 LOAD Connection Step1 Ensure that the external load switch is OFF. NOTE If the load connection adopts multi-core wires, the wiring must go through the side panel. So, it is necessary to knock-off the wiring  hole of load on the decoration panel, as shown in following figure. If the load connection adopts the single-core wires, the wiring should go from back of the inverter.
  • Page 18 CAUTION iStoragE3 has the function of residual current detection, when the residual current larger than the setting value, it  will trigger the protection to guarantee the safety of load. If RCD (residual current device) needs to be connected at load side externally, please select the RCD of type B and ...
  • Page 19 Step2 According to actual use, insert the crimped contact pin to the corresponding pin position of connector, and then connect the connector to the inverter. NOTE The definition of COM port is as follows. The connection diagram of meter is as following figure. Definition Definition RSD RS485-B...
  • Page 20 Inverter Grid L1 L2 L3 Breaker Breaker Smart Meter Load 13 14 16 17 19 21 24 25 NOTE For the detailed wiring of the smart meter, see the diagram on the right side of the meter. Step3 If the smart meter is connected, please do the following setting. CAUTION If the meter used in the grid side of iStoragE3 product, the address should be set to A-001.
  • Page 21 Parallel Connection (Optional) PARALLEL Press 2 NOTE RSD is optional function for iStoragE3. When RSD function is selected, it is no need to do other connection to supply power for inner RSD communication board. When the RSD function is not selected, but external RSD needs to be used, it is necessary to connect pin11 and pin12 to supply power for external RSD communication board by yourself.

  • Page 22: Start-Up Operation

    Turn on the external load switch. Step2 Turn on the external grid switch. CAUTION After turning on the grid switch, iStoragE3 series energy storage system will be started automatically. Step3 Turn on the DC switch on the inverter and external PV switch. Step4 Perform the following operation according to the actual condition.
  • Page 23 - If the PV voltage is less than 160V, check if the grid voltage of L1/L2/L3 is consistent with the power grid on the customer's site, if yes, press down the POWER button of any battery pack for 1s and then long press the POWER button for 5s to wait for the indicator on the inverter light on, and then select ON in Basic setting of APP to start the system..
  • Page 24 NOTE If iStoragE3 is first started, we suggest to charge the battery pack as following procedure. 1. When the grid is connected and normal, click Working Mode in Inverter page on APP, and set the Working Mode to Backup mode. 2.
  • Page 25 XIAMEN KEHUA DIGITAL ENERGY TECH CO., LTD. ADD: Room 208-38, Hengye Building, No. 100 Xiangxing Road, Torch High-tech Zone (Xiang an) Industrial Zone, Xiamen,China (361000) Technical Support TEL: 0592-5160516 (8 lines) FAX: 0592-5162166 4402-04511 006 Http://www.kehua.com...

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