Sungrow SR20D-M User Manual
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Sungrow SR20D-M User Manual

Sungrow SR20D-M User Manual

Pv rapid shutdown equipment
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User Manual
PV Rapid Shutdown Equipment
SR20D-M
SR20D-MPV
Rapid Shutdown EquipmentUser
SR20D-M-UEN-Ver12-202409

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  • Page 1 User Manual PV Rapid Shutdown Equipment SR20D-M SR20D-MPV Rapid Shutdown EquipmentUser ManualSR20D-M-UEN-Ver12-202409 SR20D-M-UEN-Ver12-202409...

  • 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

    Validity This manual applies to the following product: • SR20D-M It is referred to as "RSD" hereinafter unless otherwise specified. Target Group This manual is intended for qualified technical persons who are responsible for the RSD installation, operation, and maintenance and users who need to check its parameters.
  • Page 5 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 the following symbols. Symbols used in this manual are listed below. Please review carefully for better use of this manual.

  • Page 7: Table Of Contents

    Contents All Rights Reserved .....................I About This Manual......................II 1 Safety Instructions ....................1 1.1 Unpacking and Inspection ................1 1.2 Installation Safety ...................1 1.3 Electrical Connection Safety................2 1.4 Operation Safety ....................3 1.5 Maintenance Safety ..................3 1.6 Disposal Safety ....................4 2 Product Description ..................5 2.1 System Introduction ..................5 2.2 RSD Introduction ....................6...
  • Page 8 5.3 Cable Preparation ..................20 5.4 RSD Wiring ....................22 5.5 Wiring Notices ....................28 6 Commissioning ....................30 6.1 Inspection Before Commissioning..............30 6.2 Set RSD Physical & Logical Layouts ..............30 6.2.1 RSD Physical Layout Setting (iSolarCloud App) ........30 6.2.2 RSD Logical Layout Setting (iSolarCloud App) ........35 6.2.3 RSD Physical Layout Setting (iSolarCloud) ...........37 6.2.4 RSD Logical Layout Setting (iSolarCloud) ..........40 6.3 View RSD Layout ..................41...

  • Page 9: Safety Instructions

    Perform operations considering actual on-site conditions. • SUNGROW shall not be held liable for any damage caused by violation of general safety operation requirements, general safety standards, or any safety instruction in this manual.

  • Page 10: Electrical Connection Safety

    1 Safety Instructions User Manual Before operating the product, please check and ensure that tools to be used have been maintained regularly. Electrical Connection Safety Before electrical connections, make sure that the RSD is not damaged. Otherwise, it may lead to dangers! Before electrical connections, make sure that all switches connected to the RSD are set to "OFF".

  • Page 11: Operation Safety

    User Manual 1 Safety Instructions Check the positive and negative terminals of the PV module cables first. Connect the PV module cables to the DC terminals on the product only after confirming that the polarity is correct. During the installation and operation of the RSD, ensure that the positive or negative of the PV string is not short-circuited to the ground.

  • Page 12: Disposal Safety

    To minimize the risk of electric shocks, do not perform maintenance operations that are not specified in this manual. If necessary, contact SUNGROW for maintenance. Losses arising from failure to observe this instruction will not be covered by warranty.

  • Page 13: Product Description

    PV modules. It can break the connections of PV modules in case of an emergency, thus eliminating the high DC voltage in the PV array, to ensure the safety of the whole PV system. figure 2-1 Application of RSDs in Commercial and Industrial System The SR20D-M RSD is not compatible with third-party inverters.

  • Page 14: Rsd Introduction

    2 Product Description User Manual RSD Introduction Product Model figure 2-2 Product Model External Design (A) Clips (B) Hanger (C) Input connectors (D) Output connectors (Stäubli) (Jinko) figure 2-3 External Design *The figure here is for illustration only and the real product may differ.

  • Page 15: Signs On The Product

    User Manual 2 Product Description Dimensions Signs on the Product Sign Description Do not dispose of the RSD as household waste. Read the manual before performing any operation on the RSD. CE compliance mark. EU/EEA imports. RCM compliance mark. Burn hazard due to the hot surface that may exceed 60℃. Beware of electric shocks.

  • Page 16: Configuration Principles

    User Manual Configuration Principles Compatible inverter models This RSD can be used in conjunction with SUNGROW SG25/30/33/40/50CX-P2 and SG125CX-P2 inverters. Number of RSDs supported by communication device The WiNet-S2 supports the use of up to 400 RSDs, while the Logger1000A and the Log- ger1000B support up to 4900 RSDs.

  • Page 17: Unpacking And Storage

    • Check the inner contents for damage after unpacking. Contact SUNGROW or the transport company in case of any damage or incompleteness, and provide photos to facilitate services. Do not dispose of the original packing case. It is recommended to store the device in the original packing case when the product is decommissioned.
  • Page 18 3 Unpacking and Storage User Manual • Do not store the RSD in places with corrosive chemicals or prone to damages by rodents or pests. • Carry out routine inspections. Inspection should be conducted at least once every six months. Re-pack the RSD in time if any damage caused by pests or animals is found. •...

  • Page 19: Mechanical Mounting

    Mechanical Mounting Respect all local standards and requirements during mechanical installation. Installation Site Selection A good location is critical to the safe operation, long service life, and good performance of the RSD. • The RSD is IP68 rated. • It should be installed at a position convenient for electrical connection, operation, and maintenance.

  • Page 20: Installation Tools

    4 Mechanical Mounting User Manual Installation Tools Installation tools include but are not limited to the following recommended ones. Use other auxiliary tools on site as needed. Protective gloves Insulated shoes Tape Utility knife Wire cutter Wire strippers Crimping tool Socket wrench (M8) Multimeter Open-end wrench...

  • Page 21: Installation Scenarios

    User Manual 4 Mechanical Mounting 4.3.1 Installation Scenarios Clip-on mounting Bracket mounting • Before installation, select the appropriate RSD variant and decide the installa- tion and arrangement schemes based on the actual situation, to ensure that the RSD can be connected to PV modules and adjacent RSDs normally. •...
  • Page 22 4 Mechanical Mounting User Manual • Read through the instructions provided on the back of the layout template carefully before operation. • Remove the QR code label from the RSD, and attach it to the layout template. • Stick the RSD QR code label in the corresponding position on the template paper based on the actual position of the RSD at the site.

  • Page 23: Mounted On Pv Module (Clip-On)

    User Manual 4 Mechanical Mounting 4.3.3 Mounted on PV Module (Clip-on) Step 1 Clip the RSD into the back of the PV module, as shown in the figure below. Keep the RSD parallel to the PV module when clipping it on. •...

  • Page 24: Mounted On Aluminum Guide Rail

    4 Mechanical Mounting User Manual 4.3.4 Mounted on Aluminum Guide Rail Step 1 It is recommended to use M8×25 T-head bolt (not included in the scope of delivery). Slide the T-head bolt into the groove in the aluminum guide rail. Step 2 Hang the RSD to the T-head bolt by its hanger, then fit the nut onto the bolt using a socket wrench, to secure the RSD to the aluminum guide rail.

  • Page 25: Mounted On Steel Guide Rail (T-Head Bolt)

    User Manual 4 Mechanical Mounting 4.3.5 Mounted on Steel Guide Rail (T-head bolt) Step 1 It is recommended to use M8×25 T-head bolt (not included in the scope of delivery). Insert the T-head bolt into the guide rail, and turn it 90°. Step 2 Hang the RSD to the T-head bolt by its hanger, then fit the nut onto the bolt using a socket wrench, to secure the RSD to the steel guide rail.

  • Page 26: Electrical Connection

    Electrical Connection Safety Instructions Hazardous voltages on the PV string when it is exposed to sunlight! • Operators must wear proper personal protective equipment during electrical connections. • Check and confirm that the DC cables are voltage-free using a measuring instrument before touching them.
  • Page 27 User Manual 5 Electrical Connection All electrical connections must be done in compliance with the applicable local and national/regional electrical standards. • Cables used by the user should comply with the requirements of local laws and regulations. Wiring must be done in compliance with the applicable local grid regulations and relevant safety instructions specified for the PV string.

  • Page 28: Terminal Description

    5 Electrical Connection User Manual Terminal Description figure 5-1 Internal Terminals Description Mark Positive output. OUT+ Negative output. OUT- Negative input. Positive input. Cable Preparation In the process of RSD wiring, if the main cable falls short and the connectors cannot reach each other, an extension cable is needed.
  • Page 29 User Manual 5 Electrical Connection • When preparing an extension cable, pay attention to the selection of DC connectors at the two ends of the cable. Do not mix them up. • Make sure the DC connectors of the cable are identical to or compatible with the connectors on the product.

  • Page 30: Rsd Wiring

    5 Electrical Connection User Manual Step 3 Lead the cable through the cable gland, and insert the cold-pressed terminal into the insulator until it snaps into place. Pull gently the cable backward to make sure the connection is secure. Then, tighten the cable gland and the insulator at a torque of 2.5–3 N. Step 4 Insert the positive DC connector into the corresponding negative DC connector, until there is an audible "click".
  • Page 31 User Manual 5 Electrical Connection Step 1 Connect the PV + and PV- cables of the RSD respectively to the positive and negative terminals in the junction box of the PV module. • Before connecting the PV module to the RSD's input terminals, test the output voltage of the module using a multimeter and make sure it is below 125V.
  • Page 32 5 Electrical Connection User Manual Step 2 Connect the positive probe of a multimeter to the OUT+ of the RSD, and negative probe to OUT-, to check whether there is a fault in the RSD. If the typical value of the output voltage (U) is 1V, the RSD has no fault.
  • Page 33 User Manual 5 Electrical Connection Complete the RSD wiring and measure the output voltage by following the steps below. • After completing the wiring of an RSD, use a multimeter to measure its output voltage. Ensure that the output voltage of each RSD is within the normal range. •...
  • Page 34 5 Electrical Connection User Manual Step 3 Where multiple RSDs are used, connect the OUT- of the first RSD to the OUT + of the second one, and so on. Use a multimeter to test the positive and negative terminals of the RSDs.
  • Page 35 User Manual 5 Electrical Connection Voltage Suggestions Possible Cause 1. The input cables of some RSDs are not connected. 2. The output cables of some Check whether the cables of modules U<0.9*N RSDs are not connected. and strings are properly connected. 3.

  • Page 36: Wiring Notices

    The maximum communication distance between the inverter and the RSD should be less than 350m. If the distance exceeds 350m, consult SUNGROW first. DC Wiring Requirements: The positive and negative DC cables of the same PV string should be kept parallel and close to each other.
  • Page 37 User Manual 5 Electrical Connection The positive and negative DC cables of the same PV string are not allowed to be laid apart, as shown in the figure below.

  • Page 38: Commissioning

    Commissioning Inspection Before Commissioning Perform inspections as follows before starting the RSD for the first time, and make sure the requirements below are all met. • All devices are properly installed. • All cables are connected properly in the correct polarity. •...
  • Page 39 User Manual 6 Commissioning Step 2 Set up the layout. Go to Layout, and tap Go to set. Then, choose in the upper left corner of the layout. You can then tap Edit to set the Physical Layout Name and the ratio of RSDs to PV modules, or tap Add to add a new physical layout.
  • Page 40 6 Commissioning User Manual Step 4 The manually added PV module is not associated with any RSD. You need to assign an RSD to the module. Tap Assign in the lower right corner of the screen, select the S/N of the target RSD, and confirm.
  • Page 41 User Manual 6 Commissioning Step 5 If the module is incorrectly associated with an RSD or the module is unnecessary, you may tap it and choose Unassign or Delete. Step 6 Physical layout template recognition upload (optional). at the bottom of the screen to add a device. Tap Generate From Image, and se- lect Rows or Columns based on the arrangement of the PV modules indicated in the physical layout template to be uploaded.
  • Page 42 6 Commissioning User Manual...

  • Page 43: Rsd Logical Layout Setting (Isolarcloud App)

    User Manual 6 Commissioning • Do not take photos of the physical layout template under strong light. Other- wise, the QR code may not be recognized due to reflection of light. • Turn off the live photo function on the phone before taking a photo. Upload a still photo to ensure successful QR code recognition.
  • Page 44 6 Commissioning User Manual Step 1 Tap Logic in the lower right corner of the screen. Select the string to be set, then tap and move the corresponding modules with your finger to arrange them in the correct order ac- cording to the actual wiring of the RSDs.

  • Page 45: Rsd Physical Layout Setting (Isolarcloud)

    User Manual 6 Commissioning 6.2.3 RSD Physical Layout Setting (iSolarCloud) Step 1 Enter https://web3. isolarcloud. com in the address bar of a browser. On the Plant page, click on a plant name to go to its details page. Then, choose Layout Settings to set up the physical layout of RSDs in the plant.
  • Page 46 6 Commissioning User Manual Step 3 Drag and drop the icon to the layout. Then, fill in the PV module information such as Row, Column, Azimuth Angle, and Tilt Angle, and click Confirm. Click the PV module, choose Assign. Then, select the S/N of the corresponding RSD to associate it with this module.
  • Page 47 User Manual 6 Commissioning Step 4 Physical layout template recognition upload (optional).Click Generate From Image, choose Horizontal row or Vertical row based on the actual arrangement of the PV modules, and then upload a picture of the layout template paper. Please note that if there are already some PV modules in the current layout, importing a template will clear all current layout set- tings.

  • Page 48: Rsd Logical Layout Setting (Isolarcloud)

    6 Commissioning User Manual • Please fill in the information required in the physical layout template according to actual conditions. • Fill in the inverter S/N and assign a number to the inverter (start numbering from 1). • Fill in the S/N and number of the RSD (for example, the number of the first RSD in String 1 that is connected to Inverter 1 should be 1-1-1, and so on).

  • Page 49: View Rsd Layout

    User Manual 6 Commissioning View RSD Layout 6.3.1 Check RSD Status RSD Running Status You can tell the status of the RSD based on the color of the corresponding PV module in the layout. The table below shows the relation between the PV module color and the RSD status.
  • Page 50 RSD. 2. If the fault persists, please contact SUNGROW Customer Service. 1. Check if the RSD input ca- bles are properly connected. 2. After powering off , check whether the voltage of the module is in normal range us- 1.

  • Page 51: View Layout

    User Manual 6 Commissioning The PV module is blue if the RSD is operating properly. The color shade of a module reflects its power generation efficiency. Darker blue indicates a higher power ratio and greater power generation efficiency. Color Shade Actual Power/PV Module Peak Power*100% 80–100% 60–80%...

  • Page 52: View Module Information

    6 Commissioning User Manual Quickly locate PV modules (for iSolarCloud only) Double-click a device in the layout. The module associated with this device will also be selected. 6.3.3 View Module Information Step 1 Tap a module in the layout to view the device information and running data of the RSD.
  • Page 53 User Manual 6 Commissioning Step 2 Tap Daily Yield. You can then choose to check the data on Daily Yield, Monthly Yield, An- nual Yield, Total Yield, or Power. After an option is selected, the corresponding data will be shown on the modules. You can also select Power to get the data refreshed at intervals of seconds.

  • Page 54: Rsd Decommissioning, Dismantling, And Disposal

    RSD Decommissioning, Dismantling, and Disposal Decommission the RSD Danger of burns! Even if the RSD has stopped running, it may still be hot and cause burns. Perform operations on the RSD wearing protective gloves after it cools down. Step 1 The inverter that is connected to the RSD has been powered off. Step 2 Test the DC cables using a current clamp and confirm that they are current-free.

  • Page 55: Dispose Of The Rsd

    User Manual 7 RSD Decommissioning, Dismantling, and Disposal Dispose of the RSD Users shall bear the responsibility for RSD disposal. Please dispose of the product in accordance with applicable local regulations and standards, to avoid property damages or personal injuries. Some parts or components of the RSD may contaminate the environment.

  • Page 56: Troubleshooting And Maintenance

    RSD. protection threshold value. hardware Hardware fault Please contact SUNGROW Customer Service. fault occurs to the RSD. Maintenance 8.2.1 Maintenance Notices Risk of personal injury or device damage due to improper servicing! •...

  • Page 57: Routine Maintenance

    To minimize the risk of electric shocks, do not perform maintenance operations that are not specified in this manual. If necessary, contact SUNGROW for maintenance. Losses arising from failure to observe this instruction will not be covered by warranty.

  • Page 58: Replace The Rsd

    8 Troubleshooting and Maintenance User Manual 8.2.3 Replace the RSD Step 1 The inverter connected to the RSD has been powered off. Step 2 Check and confirm that the DC cables are current-free using a current clamp. Step 3 Disconnect all the electrical connections of the RSD. When disconnecting the DC connector, use an MC4 wrench to release the locking element first, and then fit the waterproof stopper plug.

  • Page 59: Appendix

    SG25 / 30 / 33 / 36 / 40 / 50CX-P2 SG125CX-P2 8.3.2 Quality Assurance When product faults occur during the warranty period, SUNGROW will provide free service or replace the product with a new one. Evidence During the warranty period, the customer shall provide the product purchase invoice and date.

  • Page 60: Contact Information

    • The customer shall give SUNGROW a reasonable period to repair the faulty device. Exclusion of Liability In the following circumstances, SUNGROW has the right to refuse to honor the quality guarantee: • The free warranty period for the whole machine/components has expired.

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