Sungrow Single Phase Inverter Commissioning Guide

Disclaimer

The material in this document has been prepared by Sungrow Australia Group Pty. Ltd. ABN 76 168 258 679 and is intended as a guideline to assist solar installers for troubleshooting. It is not a statement or advice on any of the Electrical or Solar Industry standards or guidelines. Please observe all OH&S regulations when working on Sungrow equipment.

This document only applies to Sungrow single-phase inverters G2 inverters and Premium versions (including SG2K-S, SG3K-S, SG3K-D, SG4K-D, SG5K-D, SG6K-D and SG8K-D).

The information in this document may contain predictive statements including, without limitation, statements regarding the future financial and operating results, future product portfolio, new technology, etc. There are several factors that could cause actual results and developments to differ materially from those expressed or implied in the predictive statements. Therefore, such information is provided for reference purpose only and constitutes neither an offer nor an acceptance. Sungrow Power may change to this document without notice as we continuously improving our services.

If you have any questions relation to Sungrow Single Phase Inverter commissioning procedures, please take photos if you are on site and contact Sungrow Service Department on 1800 786 476 or email to service@sungrowpower.com.au, Monday-Friday 9am - 5pm (AEDT).

Contents

• 1. Download iSolarCloud App
• 2. Create Account and Plant
• 3. Starting Up the Inverter
  • 3.1 Start Up on Inverter Screen
  • 3.2 Start Up on iSolarCloud App
• 4. WiFi Configuration
• 5. Retrofit Setting (Existing System)
• 6. Export Limit Setting
• 7. Power Response Mode Setting
  • 7.1 Volt-Var Setting
  • 7.2 Volt-Watt Setting
• 8. Overvoltage Protection Settings
• 9. Common Issue
  • 9.1 Cannot Connect to SG Signal
  • 9.2 Resume Commissioning

1. Download iSolarCloud App

Search iSolarCloud in App Store or Google Play Store or scan the QR code below to download and install iSolarCloud on the mobile.

[QR Code]

2. Create Account and Plant

Open iSolarCloud, register an account if you do not have one. Choose the account type and complete registration. Login the account and click [Icon: Add Plant] on top right corner to create a new plant.

[Screenshot Description: The iSolarCloud app interface showing the login screen with fields for Account and Password, and a Login button. Below that, a User Registration screen with fields like Email, Password, Country, Company Name, etc. Further down, a Plant Status screen showing details like Equivalent Hours and Today Yield, with an option to 'RESUME COMMISSIONING'.]

3. Starting Up the Inverter

3.1 Start Up on Inverter Screen

Turn on the AC and DC switches to start up the inverter. Select the country "AU" and the network the inverter connected to. Wait until the inverter completed initializing and start to work.

[Screenshot Description: The inverter's display shows status indicators. The first display shows various status codes like OGB, ODE, OFR, OIT, OES, OAT, OAU, OCZ, OBE, OBRA, OCN, OSE, OTH, OMX, OLUX, ONZ, ONL, Other, with ESC and ENT buttons.]

[Screenshot Description: A second inverter display shows status indicators like AG, EE, PN, PC, WP, EG, Other, with ESC and ENT buttons.]

The following abbreviations are used for grid types:

• AG = Ausgrid
• EE = Ergon Energy
• PN = SA Power Networks
• PC = Powercor
• WP = Western Power
• EG = Energex

Note: The pre-set grid settings on the inverter screen may not be correct or completed. It is highly recommended to initialize the inverter through the iSolarCloud app.

3.2 Start Up on iSolarCloud App

Turn on the AC and DC switches to start up the inverter. Instead of operating on the inverter screen, open iSolarCloud. Navigate through Local Access -> WLAN -> Login inverter with the account "admin" and password "pw8888" -> Country/Region -> Australia (do not select other Australia networks) -> Network Service Provider -> Select the NSP, if not specified, select AS/NZS 4777.2:2015 -> Grid Type -> Select specific grid type -> TURN ON DEVICE.

4. WiFi Configuration

1. Insert WiFi dongle to the inverter and wait until the first LED light labelled as "RUN" turns on.
2. In mobile WiFi settings, search for the WiFi “SG-XXXXXXXX” and connect. If a password is required, use the serial number of the dongle as the password.
3. Choose either Method 1 or Method 2 below to complete WiFi configuration.
4. After successful connection, all three LED lights on the WiFi dongle should be on.

[Image Description: A photo of the Sungrow WiFi dongle inserted into the inverter, showing the "ON", "COM", "NET" LEDs.]

Method 1:

Open iSolarCloud -> click [Menu Icon] -> select "WLAN Configuration" -> Scan the QR code on the WiFi dongle -> select the WiFi network and enter the password.

[Screenshot Description: The iSolarCloud app interface showing a login screen, then a menu with options including "Select Server", "WLAN Configuration", "Firmware Download", etc. This is followed by a "SCAN QR CODE" screen and a "SELECT LOCAL NETWORK" screen listing available WiFi networks.]

Method 2:

Open iSolarCloud -> Local Access -> WLAN -> Login inverter with the account "admin" and password "pw8888" -> WLAN Configuration -> select the WiFi network and enter the password.

[Screenshot Description: A sequence of iSolarCloud app screens. First, the login screen. Then, the Local Access screen showing WLAN and Bluetooth options. Next, the WLAN screen with account "admin" and password "pw8888". Following this is a "SUCCESSFULLY CONNECTED" screen indicating the inverter is connected to the internet. Finally, a "MORE" menu screen showing options like "WLAN Configuration", "Settings", "Advanced Settings", etc.]

5. Retrofit Setting (Existing System)

Note: Requires firmware version SG3K-D_SG5K-D_CrysG2D_V65_20210527.zip or SG8K_D_CrysG2D_V42_20210319.zip, or later. Please ensure you update to the latest firmware version.

Access the inverter through WLAN (refer 3.2). Go to “More” -> “Settings” -> “Power Control” -> “Feed-in Limitation". Enter the existing inverter rated power in “Rated Power of Original Power Generation Systems".

[Screenshot Description: A sequence of iSolarCloud app screens. First, the main menu with "Settings". Then, the Settings screen with options like "Country/Region", "System Parameters", "Power Control". Next, the Power Control screen with "Active Power Regulation", "Reactive Power Regulation", "Feed-in Limitation". Finally, the Feed-in Limitation screen showing "Rated Power of Original Power Generation Systems" and a toggle for "Feed-in Limitation".]

6. Export Limit Setting

Note: Requires firmware version SG3K-D_SG5K-D_CrysG2D_V65_20210527.zip or SG8K_D_CrysG2D_V42_20210319.zip, or later. Please ensure you update to the latest firmware version.

Access the inverter through WLAN (refer 3.2). Go to “Settings” -> “Power Control” -> "Feed-in-Limitation”. Turn on Feed-In-Limitation. Enter the allowed feed-in power in “Feed-in-Limitation Value”. Enter the ratio in “Feed-in-Limitation ratio”. (For example, a 5KW system having a 3KW export limit will have the ratio of 60%).

[Screenshot Description: Similar navigation to Section 5, leading to the Feed-in Limitation screen. This time, the focus is on setting the "Feed-in Limitation Value" (e.g., 5.00 kW) and "Feed-in Limitation Ratio" (e.g., 100.0%).]

7. Power Response Mode Setting

7.1 Volt-Var Setting

Access the inverter through WLAN (refer 3.2). Go to “Settings” -> “Power Control” -> "Reactive Power Regulation” -> “Reactive Power Regulation” -> “Q(U)” -> “BACK”. Input the voltage levels and associate reactive power in percentage (%).

[Screenshot Description: A sequence of iSolarCloud app screens showing navigation through Settings to Power Control, then Reactive Power Regulation. The final screen displays "REACTIVE POWER REGULATION" with options like "Off", "Pf", "Qt", "Q(P)", and "Q(U)". The "Q(U)" option is selected, followed by a screen showing voltage levels (QU_V1, QU_V2, etc.) and corresponding reactive power percentages (QU_Q1, QU_Q2, etc.).]

7.2 Volt-Watt Setting

Access the inverter through WLAN (refer 3.2). Go to “Settings” -> “Power Control” -> "Active Power Regulation". Turn on “Power Regulation at Over Voltage". Input the voltage levels and associate active power in percentage (%).

[Screenshot Description: A sequence of iSolarCloud app screens showing navigation through Settings to Power Control, then Active Power Regulation. The final screen displays "ACTIVE POWER REGULATION" with options like "Active Power Limit Ratio" and "Power Regulation at Grid Overvoltage". The "Power Regulation at Grid Overvoltage" option is selected, followed by a screen showing voltage levels (OPU_V1, OPU_V2, etc.) and corresponding active power percentages (OPU_P1, OPU_P2, etc.).]

8. Overvoltage Protection Settings

Access the inverter through WLAN (refer 3.2). Go to "Settings" -> "Protection Parameters" -> “Grid Abnormal Protection". Turn on “10-min Overvoltage Protection". Input the voltage in “Protection Value".

Note: The 10-min overvoltage protection value can only be modified by a licensed electrician in accordance with DNSP's requirements.

[Screenshot Description: A sequence of iSolarCloud app screens showing navigation through Settings to Protection Parameters, then Grid Abnormal Protection. The final screen displays "GRID ABNORMAL PROTECTION" with a toggle for "10-min Overvoltage Protection" and an input field for "Protection Value", showing a sample value of 258.0 V.]

9. Common Issue

9.1 Cannot Connect to SG Signal

It could happen sometimes that the mobile cannot join the SG signal of the dongle when doing WiFi configuration.

[Screenshot Description: An error message pop-up in the iSolarCloud app stating "Unable to join 'SG-B20****0854'" and "The network is temporarily unavailable. Try again later." with an "OK" button.]

The reason for the problem is that the signal has been occupied by another device. In this case, it is necessary to check if the dongle is already connected with another mobile device such as iPad. After disconnecting the connection, try to connect to the SG network again.

9.2 Resume Commissioning

Sometimes when creating the plant on the iSolarCloud, the process might be stuck in resume commissioning. The reason for this is that the WiFi configuration has not been done properly. To rectify the issue, remove the WiFi dongle from the inverter and plug it in again. Then redo the WiFi configuration as per Section 4 in this document. To log out the app, follow the steps below.

[Screenshot Description: A sequence of iSolarCloud app screens showing the main navigation menu with options like "Home", "Live Data", "Message Center", "Settings", etc. The "Settings" option is selected, leading to a "SETTINGS" screen with various sub-menus like "General", "Account and Security", "Application Sharing", etc. A "LOGOUT" button is visible at the bottom of the settings menu.]