SunSynk Hybrid Inverter with a Generator Installing
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SunSynk Hybrid Inverter with a Generator Installing

SunSynk Hybrid Inverter with a Generator Installing

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Installing the Sunsynk Hybrid
Inverter with a Generator
Global Tech China Ltd, 3 Floor, Wai Yip Industrial Building.171 Wai Yip Street,
Kwun Tong, Kowloon, Hong Kong.
Tel: +852 2884 4318 Fax: +8522884 4816
www.sunsynk.com / sales@globaltech-china.com / www.globaltechhk.com
v1 (04/17/21)

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  • Page 1 Installing the Sunsynk Hybrid Inverter with a Generator Global Tech China Ltd, 3 Floor, Wai Yip Industrial Building.171 Wai Yip Street, Kwun Tong, Kowloon, Hong Kong. Tel: +852 2884 4318 Fax: +8522884 4816 www.sunsynk.com / sales@globaltech-china.com / www.globaltechhk.com v1 (04/17/21)

  • Page 2: Table Of Contents

    INDEX 1. INTRODUCTION ........................3 2. SAFETY ............................. 3 2.1. S ..........................4 YMBOLS 2.2. S ........................ 4 AFETY NSTRUCTIONS 3. COMMISSIONING ........................5 3.1. C ......................5 ONNECTING THE ATTERIES 3.2. C ....................... 6 ONNECTING THE 3.3. C ...................... 6 ONNECTING THE ENERATOR 3.4.

  • Page 3: Introduction

    1. INTRODUCTION This manual presents instructions to installing the Sunsynk Hybrid Inverter with a generator. All the procedures described in this manual should be followed carefully. If you have questions or concerns about the operation and maintenance of this product, please contact our customer support.

  • Page 4: Symbols

    2.2. Safety Instructions WARNING HIGH LIFE RISK DUE TO FIRE OR ELECTROCUTION. The Sunsynk Hybrid Inverter can only be installed by a qualified licensed electrical contractor. This is not a DIY product. Be sure to read this manual thoroughly before installation.

  • Page 5: Commissioning

    3. COMMISSIONING 3.1. Connecting the Batteries When connecting a Lithium battery, follow the connection steps bellow and then check section 3.7 “Setting Up a Lithium Battery” to set it up in the inverter: 1) Connect a properly power cable following the battery manufacturer specification and recommend safety devices.

  • Page 6: Connecting The Load

    Battery connection of the 8kW model  For safe operation and compliance, an individual DC overcurrent protector or disconnection device is required for the connection of the battery and the inverter. It is recommended to utilize a suitable fuse and DC isolator (see next page). In some applications, switching devices may not be required but overcurrent protectors are still required.

  • Page 7: Connecting The Pv

    Bottom view of the 8kW model  3.4. Connecting the PV The 3.6kW and 5.5kW models have only one MPPT controller with a maximum input current of 9Amp. The 8.8kW inverter has two built-in MPPT controllers, MPPT 1 and MPPT 2. Therefore, two individual arrays can be connected to each MPPT for better performance.
  • Page 8 8.8 kW PV Connection 5.5kW PV panels are connected via the MC4 connectors located at the bottom of the inverter Before connecting to PV modules, install a separate DC circuit breaker between the  inverter and PV modules. To avoid any malfunction, do not connect any PV modules with possible current ...

  • Page 9: System Diagram

    3.5. System Diagram WARNING Ensure you have used appropriate safety devices in accordance with local wiring regulations.

  • Page 10: Power Up

    3.6. Power Up Switch on the inverter by pressing the green start button. Switch on the Battery Isolator. Switch on the Solar Isolator if solar is used. The system should now start running. WARNING The startup should be performed by a qualified engineer since there is a high risk of electruction while the covers are off.
  • Page 11 1) On the Home Page, press the gear icon on the top-right corner. 2) Click on the Battery icon. 3) On the Battery Setup screen:...
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  • Page 14 NOTICE Some types of lithium battery the BMS cannot be controlled by Sunsynk inverter. In this case, treat the battery as a lead-acid type and set the charging and discharging protocol following the battery manufacturer specification.

  • Page 15: Testing The Generator

    3.8. Testing the Generator After setting up the battery, follow the steps below to test the generator: 1) Fit a switch directly to the A/T/S leads. 2) Switch on the generator to automatic. 3) Plug the generator into the inverter. 4) Switch all isolators on.

  • Page 16: Connecting The Ats To The Inverter

    3.9. Connecting the ATS to the Inverter The inverter has three relays. Depending upon the function that is needed, these relays will operate differently. Both GV and GS can start the generator, but this depends upon the setting you select. GV and GS are both dry contacts N/ O (normally open). NOTICE If you are using the Earth bond feature, then GS will start the generator.
  • Page 17 If you are using the 8.8kW inverter, then this connection would be terminals 7+8.

  • Page 18: Software Update

    3.10. Software Update Check if you need to update the software running in the inverter. For this manual it refers to: MCU 2159 - 3.6K MCU 3160 - 5.5K MCU 3878 - 8.8K UI Version E417 The software version is show on the navigation page: Before going on site, check if your software is updated.
  • Page 19 If an update is required, then please contact one of the Sunsynk service engineers with the data logger number, and the update can be done remotely. When carrying out an update, please be patient as it can take some time.

  • Page 20: Programming The Inverter To Work With A Generator

    4. PROGRAMMING THE INVERTER TO WORK WITH A GENERATOR Before programming the inverter, ensure that: 1) The battery is communicating properly. 2) The inverter starts up correctly. 3) The generator A/T/S is functioning correctly. 4) The inverter’s software is updated. Now that you have performed all the connections and all of the peripherals are working well, it is time to program the inverter.

  • Page 21: Setting Up Time And Date

    4.1. Setting Up Time and Date If you do not set the time and date correctly, then it cannot work properly. Therefore, follow the steps below to set time and date. 1) On the Settings Page, press the “Basic” icon. 2) The Basic Setup page will show up on the screen.

  • Page 22: Setting Up The Grid

    4.2. Setting Up the Grid On the navigation page, click on the “Grid” icon to set up the grid. Generators operate with quite big tolerance, so we suggest you to select: Higher frequency limit: frequency 51.5 Hz or higher Lower frequency limit: 47.5 Hz or Lower Lower voltage limit: 185V Higher voltage limit: 265V The inverter will lock into the generator.

  • Page 23: Setting Up The Batteries

    4.3. Setting Up the Batteries To set up your batteries, click on the “Battery” icon on the settings page. From here you can configure many settings: a) Select battery size (if not auto set)
  • Page 24 b) Max. charge and discharge of the batteries c) On the Batt Charge sub-page, select “Gen Charge” and “Gen Signal”.
  • Page 25 d) Set up the battery charging current. NOTICE This cannot exceed the maximum power of the inverter, otherwise it will shut down. Also, you need to be aware of: a) C rating of the battery (charge and discharge). b) Battery cables (normally 100Ah per stack).
  • Page 26 How to calculate the maximum charge or discharge of the battery: ∗ . ℎ ℎ Example: 2 sets of batteries of 5 kWh / 48V: 0.5 ( ℎ ) ∗ (2 ∗ 5,000) . ℎ ℎ ≈ 100 If you are using AGM then the C Rating may only be 0.1 much lower. The second step is to check if the inverter can withstand these values: a) 3 kW Max 50 Amp b) 5.5 kW Max 80 Amp...

  • Page 27: Selecting The Aux Port

    f) Select the battery shutdown voltage / percentage: a) Shutdown is the battery SOC % that will cause the inverter will switch off the grid but not shut down completely. b) Low Battery is battery warning beep. c) Reset is the battery level the battery needs to reach before the battery will start the inverter again.
  • Page 28 1) On this page, you need to program the Aux port as a generator port, as in the figure below: 2) Then, select the start/stop value for the generator (we suggest Start at 35% and Stop at 95%).

  • Page 29: Select System Mode

    4.5. Select System Mode On the navigation page, press “System Mode”. This is the heart of the Sunsynk inverter. What this page displays: Prevent export power to the grid with "Zero Export".  Limit power to supply to only all the house loads with "Solar Export".
  • Page 30 1) Select the maxiumum power of the inverter. a) 3.6kW inverter maximum power: 3.6kW b) 5.5kW inverter maximum power: 6kW c) 8.8kW inverter maximum power: 9kW 2) Select “Zero Export” and “Limit to Load Only”.
  • Page 31 3) Select what to do with the solar power. a) If you are working off-grid, then you should prioritise the battery. b) If you are on-grid and the generator is just a backup, then prioritise the load. 4) Select “Use Timer”. This is the real time in which the inverter will charge or discharge from the generator.
  • Page 32 Example of setting: Time: this is the real time in which the function will be activated. Power: this is the maximum power this function will control. SOC: this is the SOC the battery must reach. Grid: charge from the grid. Gen: charge the batteries from the generator.

  • Page 33: Using The Grid Port

    4.6. Using the Grid Port It looks a little complex, but it is quite simple. A few things to keep in mind: You may choose to connect the generator to the grid port. This is okay from my personal experience, but not all generators are compatible, and the system will simply not work.

  • Page 34: Final Considerations

    5. FINAL CONSIDERATIONS Once you are happy that everything is fully functional or connections are made correctly and tight: 1) Shut the inverter Down a) Switch off Solar isolator. b) Switch off inverter. c) Switch off battery isolator. 2) Ensure that: a) all cable glands are tightened.
  • Page 35 5) Reboot the inverter a) Switch on the Solar Isolator b) Switch on the inverter c) Switch on the Battery Isolator If you have followed this simple guide, the system will be set up and running normally Key Points: 1) The generator set must be partly enough to power the load and charge the battery at the same time typical sizes are.
  • Page 36 You can watch the video for this manual in the link below: https://www.youtube.com/watch?v=aYw2-9z0lPM Follow us on social media: Sunsynk @energysolutions @sunsynkofficial https://www.sunsynk.org...
  • Page 37 Kowloon, Hong Kong. Tel. HK +852 2884 4318 Fax: +852 2884 4816 Tel. UK +44 151 528 9945 Tel. SA +27 1108 39837 sales@globaltech-china.com Audio Training manuals on Apple Pod Cast and Spotify Full training support, manuals and videos on www.sunsynk.com...

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