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Related Manuals for Sungrow SG305HX
Summary of Contents for Sungrow SG305HX
- Page 1 MPPT-Level ISO Detection Function Guide SG305HX / SG320HX-20 / SG350HX-20 PV Grid-Connected Inverter MPPT-Level ISO Detection Function Guide SG305HX_SG320HX-20_SG350HX-20-UEN-Ver11-202502 PV Grid-Connected Inverter SG305HX / SG320HX-20 / SG350HX-20 SG305HX_SG320HX-20_SG350HX-20-UEN-Ver11-202502...
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Page 3: All Rights Reserved
Software Licenses • It is prohibited to use data contained in firmware or software developed by SUNGROW, in part or in full, for commercial purposes by any means. • It is prohibited to perform reverse engineering, cracking, or any other operations that com... -
Page 4: About This Manual
PV system. You can visit or the website of the device manufacturer for more information. Validity This manual is intended mainly for the following products: • SG305HX • SG320HX-20 • SG350HX-20 It is referred to as "the inverter" hereinafter unless otherwise specified. Target Group This manual is intended for qualified technical persons who are responsible for inverter instal... - Page 5 Security Declaration For details on the product’s network security vulnerability response process and vulnerability disclosure, please visit the following website: https://en.sungrowpower.com/security-vulnera bility-management. For more information on network security, please refer to the user manual of the communica tion module or the Data Logger that comes with the product. Symbols in the Manual To ensure the safety of life and property for users when using the product and to improve the efficiency of product use, the manual provides relevant information, which are highlighted by...
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Page 6: Table Of Contents
Contents All Rights Reserved......................I About This Manual......................II 1 Function Introduction ...................1 2 Step-by-Step Instructions ...................2 2.1 Requirements......................2 2.2 MPPT-Level ISO Detection.................. 3 2.3 Manually Activating MPPT-Level ISO Detection..........6 3 Locating the Fault ....................15 4 Fault Codes ......................18... -
Page 7: Function Introduction
1 Function Introduction MPPT-level insulation monitoring (MPPT Level ISO Detection) helps identify the MPPT with a DC short circuit fault and indicates the location of the faulty PV module as a percentage. This feature effectively reduces the risk of electric shocks or fires caused by ground faults on the DC side. -
Page 8: Step-By-Step Instructions
Software Version Software versions that support MPPT-level insulation monitoring (MPPT Level ISO Detection) are listed below: • Logger4000: P019. • SG305HX / SG320HX-20 / SG350HX-20 inverters: MALACHITE-S_B000.V000 .P011-20240524 or later. • iSolarCloud: 2.1.6.20240401 or later. Log in to the iSolarCloud App Before logging in to the iSolarCloud App, ensure that: •... -
Page 9: Mppt-Level Iso Detection
MPPT-Level ISO Detection Function Guide 2 Step-by-Step Instructions 2.2 MPPT-Level ISO Detection Enabling MPPT Level ISO Detection is necessary for automatic insulation resistance testing during the inverter's start-up stage before grid connection. - Page 10 2 Step-by-Step Instructions MPPT-Level ISO Detection Function Guide step 1 Check that MPPT Level ISO Detection is enabled. If it is not, navigate to More > Settings > Operation Parameters > ISO Detection to enable MPPT Level ISO Detection for the inverter. step 2 In case of anything abnormal with the inverter, an icon will show up in the lower-right corner of the inverter icon in the power flow diagram.
- Page 11 MPPT-Level ISO Detection Function Guide 2 Step-by-Step Instructions...
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Page 12: Manually Activating Mppt-Level Iso Detection
2 Step-by-Step Instructions MPPT-Level ISO Detection Function Guide step 3 If an MPPT-level insulation fault occurs (for example, “MPPT1 Low Insulation Resistance (Impedance)"), perform troubleshooting by referring to 3 Locating the Fault. - - End 2.3 Manually Activating MPPT-Level ISO Detection MPPT Level ISO Detection Manual Trigger allows users to manually check for insulation faults using the iSolarCloud App. - Page 13 MPPT-Level ISO Detection Function Guide 2 Step-by-Step Instructions step 1 Navigate to Settings > System Parameters, as shown below, and select Boot/Shutdown to shut down the inverter. Set the auxiliary switch to OFF first. After confirming that the current is below 0.5A , set the DC switches to OFF.
- Page 14 2 Step-by-Step Instructions MPPT-Level ISO Detection Function Guide step 3 Tap MPPT Level ISO Detection Manual Trigger, then wait 30 seconds.
- Page 15 MPPT-Level ISO Detection Function Guide 2 Step-by-Step Instructions step 4 Check the results in the pop-up window:...
- Page 16 2 Step-by-Step Instructions MPPT-Level ISO Detection Function Guide • “Connection failed, please retry”: Verify that all prerequisites for logging in to the App are met. • “Timeout, please retry”: Verify that the network and Bluetooth connections are stable.
- Page 17 MPPT-Level ISO Detection Function Guide 2 Step-by-Step Instructions • “Completed. The insulation resistance (impedance) is normal”: This string is operating properly. You can proceed to inspect the remaining strings in order.
- Page 18 2 Step-by-Step Instructions MPPT-Level ISO Detection Function Guide • “Detection completed, the system insulation resistance (impedance) is low. See: Home - Re al-time Fault”: This string is abnormal. Perform inspections as per the instructions in Current Fault (e.g., Fault 1716. You can tap for more details as shown below).
- Page 19 MPPT-Level ISO Detection Function Guide 2 Step-by-Step Instructions...
- Page 20 2 Step-by-Step Instructions MPPT-Level ISO Detection Function Guide - - End...
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Page 21: Locating The Fault
3 Locating the Fault Below are instructions on how to locate the faulty string. step 1 Open the iSolarCloud App. Navigate to Settings > System Parameters and shut down the inverter. step 2 Open the AC circuit breaker. step 3 Set the auxiliary switch to OFF. After confirming that the current is below 0.5A, set all DC switches to OFF. - Page 22 3 Locating the Fault MPPT-Level ISO Detection Function Guide figure 3-1 Terminals at the Inverter Bottom 1 Disconnect PV12, PV13, PV14, and PV15. Ensure that the PV11 remains connected. Then, go to Step 5. 2 Disconnect PV11, PV13, PV14, and PV15. Ensure that the PV12 remains connected. Then, go to Step 5.
- Page 23 After inspection, go through again the commissioning procedure. If the indicator still does not light, turn off the auxiliary switch and contact SUNGROW for assistance. step 6 Set the auxiliary switch to OFF.
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Page 24: Fault Codes
4 Fault Codes Inverter faults will be displayed in the iSolarCloud App. If the inverter is equipped with an LCD screen, users can also view the fault information directly on the screen. The codes and troubleshooting methods of the insulation faults are listed in the table below and apply to all PV inverter products. - Page 25 5. If the fault does not arise for the aforementioned rea son and still cannot be resolved, please contact SUNGROW Customer Service. Contact your dealer if you have already tried the troubleshooting methods listed in the table above but the problem remains unresolved.
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