Related Manuals for Sungrow 1+X Series
Summary of Contents for Sungrow 1+X Series
- Page 1 Preventive Maintenance Manual 1+X Series 1+X Series Preventive Maintenance Manual1+X Series Preventive Maintenance Manual-UEN-Ver11-202505 1+X Series Preventive Maintenance Manual-UEN-Ver11-202505...
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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... -
Page 4: About This Manual
About This Manual To ensure the safety and efficiency of the system, regular daily inspections of the photovol- taic power station are necessary. This manual mainly introduces the inspection intervals and steps of the photovoltaic power station. Target Group This manual is applicable to operators of photovoltaic power station and electrical techni- cians with corresponding qualifications. - Page 5 Indicates potential risks that, if not avoided, can lead to device malfunctions or fi- nancial losses. Indicates additional information, emphasized contents, or tips that may be helpful, e.g. to help you solve problems or save time. Description of symbols on the product Observe at all times the warning signs on the product, including: Sign Definition...
- Page 6 Sign Definition The product is recyclable. The lithium battery is recyclable.
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Page 7: Table Of Contents
Contents All Rights Reserved .....................I About This Manual......................II 1 Safety Overview ....................1 1.1 Personnel Requirements.................1 1.2 Weather and Environmental Requirements............1 1.3 Protective Equipment..................2 1.4 Inspection Tools .....................3 1.5 Operation Requirements .................4 1.6 Component Scrapping ..................5 2 Transformer Inspection ...................6 2.1 Inspection Checklist..................6 2.2 Check the Transformer Exterior ...............7 2.3 Inspecting Cable Connections ............... - Page 8 4.4 Exclusion of Liability ..................26 4.5 Contact Information ..................27...
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Page 9: Safety Overview
• Do not conduct maintenance operations while the doors of the system are open in overcast, rainy, humid or windy weather. Sungrow is not liable for any losses incurred if such situations cannot be avoided. •... -
Page 10: Protective Equipment
1 Safety Overview Preventive Maintenance Manual Warning sign settings To prevent unauthorized personnel from approaching the equipment and causing misoperation or accidents, adhere to the following precautions: • Place conspicuous warning signs around the equipment to prevent accidents caused by accidental turning-on. •... -
Page 11: Inspection Tools
Preventive Maintenance Manual 1 Safety Overview High-visibility vest Safety gloves Safety helmet Goggles Safety shoes Earplugs For live operation, make sure that at least two personnel are present on site and that the fol- lowing ESE is prepared to ensure personal safety. Rescue hook Insulating stool Protective masks... -
Page 12: Operation Requirements
1 Safety Overview Preventive Maintenance Manual Examples of Inspection Tools Clamp meter 1500VDC multimeter Phase rotation tester Torque wrench Screwdriver Wrenches Note: The above list includes only a few commonly used inspection tools. Other standard tools are not listed here. For the specific tools required for each inspection task, please refer to the “Tool Preparation”... -
Page 13: Component Scrapping
To reduce the risk of electric shock, do not perform any maintenance opera- tions beyond those specified in this manual. • Contact Sungrow customer service personnel for repairs if necessary. Component security • Do not apply a spray coating to any components inside or outside the equipment. -
Page 14: Transformer Inspection
Transformer Inspection Inspection Checklist The inspection checklist of the transformer is as follows. • The recommended maintenance intervals provided below should be adjusted based on the specific environmental conditions where the product is installed. • The maintenance interval of the product is subject to factors like plant size, in- stallation position, and on-site environment. -
Page 15: Check The Transformer Exterior
LV cabinet, HV room, bottom of radiator fins (check by hand), oil level gauge, gas relay, pressure relief valve, oil drain valve, sam- pling valve, windings, and oil temperature gauge. If oil leakage is observed, please take photos and contact SUNGROW immediately. - Page 16 These are considered abnor- mal conditions and may indicate potential risks. If any of the above conditions are observed, please take photos and contact SUNGROW immediately.
- Page 17 Preventive Maintenance Manual 2 Transformer Inspection The peak temperature corresponds to the red pointer on the dial, and the operating tem- perature corresponds to the white pointer. Check the inverter's historical temperature records to see if any values exceeded the alarm or trip thresholds.
- Page 18 2 Transformer Inspection Preventive Maintenance Manual Step 5 Check for external corrosion. Inspect the radiator fins, tank surface, and accessories for visible rust or any damage caused by corrosion. If corrosion is found, please take photos for records and promptly treat the affected areas.
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Page 19: Inspecting Cable Connections
Preventive Maintenance Manual 2 Transformer Inspection Inspecting Cable Connections Step 1 Check the electrical connections. Power off the device. Open the transformer HV room door and inspect the cable heads (see Figure A) to en- sure proper connection and no misalignment. Check that the cable clamps (see Figure B) securely hold the cables (see Figure C) and that all bolts are tightened Check that the grounding cables are securely connected. -
Page 20: Check The Transformer Protection
Check that the cover at the connection between the transformer and the inverter is se- curely closed. ① Visually check if any screws are missing from the cover. If so, contact SUNGROW promptly. ② Use a wrench or screwdriver to verify if any screws are loose. If so, tighten them immediately. - Page 21 Preventive Maintenance Manual 2 Transformer Inspection accordance with IEC 60599:2015. If any anomalies are found in the oil sample results, please contact SUNGROW for further guidance.
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Page 22: Ring Main Unit Inspection
Ring Main Unit Inspection Inspection Checklist The inspection checklist of the ring main unit is as follows. • The recommended maintenance intervals provided below should be adjusted based on the specific environmental conditions where the product is installed. • The maintenance interval of the product is subject to factors like plant size, in- stallation position, and on-site environment. - Page 23 Preventive Maintenance Manual 3 Ring Main Unit Inspection Inspection Type Details Finished interval System status view: Check whether the AC-side cir- cuit breaker of the MV station can be turned off. Check whether the circuit Check breaker of the ring main unit Once a year Switch can be turned off.
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Page 24: Check Cleanliness
Step 1 Power off the entire system to ensure the RMU is completely de-energized. Step 2 Open the compartment doors and visually inspect the cable compartment, mechanism com- partment, and LV cabinet for any signs of condensation. If condensation is found, please contact SUNGROW immediately. - - End... -
Page 25: Inspecting Cable Connections
Preventive Maintenance Manual 3 Ring Main Unit Inspection Inspecting Cable Connections Step 1 Check the electrical connections. Power off the inverter. Open the HV room door, and the interior of the RMU is shown in the figure below. Check the gas pressure status by verifying that the pressure gauge needle points to the green zone. -
Page 26: Check Cable Connectors
3 Ring Main Unit Inspection Preventive Maintenance Manual Figure 3-2 RMU Cable Room Inspection finished. Close the cabinet door. - - End Check Cable Connectors Before inspecting the cable connectors, make sure the equipment is completely powered down. - Page 27 Step 1 Check for burn marks around the cable connectors Visually check the area around the cable connector for any burn marks. If burn marks are found (as shown in the image below), contact SUNGROW immediately. Figure 3-3 Burnt Cable Connector Step 2 Check the area around the cable connector for any signs of discharge.
- Page 28 3 Ring Main Unit Inspection Preventive Maintenance Manual Step 3 Check the cable connector for any twisting or mechanical stress. If the cable connector appears twisted as shown in the image below, take corrective meas- ures immediately. Figure 3-4 Twisted Cable Connector Step 4 Check whether any of the three-phase cable connectors have slipped.
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Page 29: Check The Switches
Preventive Maintenance Manual 3 Ring Main Unit Inspection Check the Switches Check whether the grounding switch and load switch of the RMU are operating correctly. With both the inverter and RMU powered off: Step 1 Check that the AC circuit breaker of the inverter can be opened. Step 2 Check that the RMU circuit breaker can be opened. - Page 30 3 Ring Main Unit Inspection Preventive Maintenance Manual Remove the covers of the RMU inlets/outlets. Inspect the dust filters inside. If there's a visible buildup of dust, clean them thoroughly. Once cleaned, reinstall the filters and covers in the reverse order. Ormazabal RMU The air inlets and outlets are located within the red box shown below.
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Page 31: Check Node Signals Of The Outdoor Rmu
Preventive Maintenance Manual 3 Ring Main Unit Inspection Check Node Signals of the Outdoor RMU Check that the node signals for the load switch, smoke detector, etc., are functioning properly. Step 1 Enter the web interface: Step 2 Enter account username and the password to log into SCU. Step 3 Click “Device Monitoring→PMD_IO_RMU (COM6–... -
Page 32: Appendix
Appendix Starting 4.1.1 Inspection Before Start-up After completing the maintenance work, start the equipment inside the MV Grid-Connected PV Inverter. Before starting up, inspect the below items and ensure the requirements are all met. • Connections are all made in compliance with the product manual and circuit diagram. •... -
Page 33: Planned Powering Down
Preventive Maintenance Manual 4 Appendix Step 3 Choose“Overview→General Information” and clickShutdown in theShortcut Menu on the Web interface to shut down the MV Grid-connected PV Inverter. Step 4 Verify that “Access Protection Enabling” is disabled on the Web interface. Step 5 Turn on the load switch/ Circuit breaker of the upstream smart PV combiner boxes. Step 6 Turn on the QS1 DC load switches inside all inverter units, and close the cabinet doors. -
Page 34: Tightening Torque
• Unforeseen calamity or force majeure The use of supplied software produced by Sungrow Power Supply Co., Ltd. is subject to the following conditions: • Sungrow Power Supply Co., Ltd. assumes no liability for direct or indirect damages aris- ing from the use of Software. -
Page 35: Contact Information
Preventive Maintenance Manual 4 Appendix Contact Information In case of questions about this product, please contact us. We need the following informa- tion to provide you the best assistance: • Model of the device • Serial number of the device •... - Page 36 Sungrow Power Supply Co., Ltd. www.sungrowpower.com...
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