Sungrow SG150CX User Manual
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Sungrow SG150CX User Manual

Sungrow SG150CX User Manual

Pv grid-connected inverter
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User Manual
PV Grid-Connected Inverter
SG150CX
SG150CX-UEN-Ver12-202501

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Summary of Contents for Sungrow SG150CX

  • Page 1 User Manual PV Grid-Connected Inverter SG150CX SG150CX-UEN-Ver12-202501...

  • 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

    Please read this manual carefully before using the product and keep it properly at a place for easy access. All contents, pictures, marks, and symbols in this manual are owned by SUNGROW. No part of this document may be reprinted by the non-internal staff of SUNGROW without written authorization.
  • Page 5 For more information on network security, please refer to the user manual of the communi- cation module or the Data Logger that comes with the product. Symbols This manual contains important safety instructions, which are highlighted with the following symbols, to ensure personal and property safety during usage, or to help optimize the prod- uct performance in an efficient way.

  • Page 7: Table Of Contents

    Contents All Rights Reserved .....................I About This Manual......................II 1 Safety Instructions ....................1 1.1 Unpacking and Inspection ................2 1.2 Installation Safety ...................3 1.3 Electrical Connection Safety................3 1.4 Operation Safety ....................5 1.5 Maintenance Safety ..................5 1.6 Disposal Safety ....................7 2 Product Description ..................8 2.1 System Introduction ..................8 2.2 Product Introduction..................9...
  • Page 8 4.5.3 Mounted on Wall .................33 4.6 Mount the Inverter ..................35 5 Electrical Connection ..................37 5.1 Safety Instructions ..................37 5.2 Terminal Description ..................39 5.3 Electrical Connection Overview ..............40 5.4 Crimp OT/DT terminal ...................42 5.5 External Protective Grounding Connection .............43 5.5.1 External Protective Grounding Requirements ........44 5.5.2 Connection Procedure.................44 5.6 AC Cable Connection ...................44 5.6.1 AC-side Requirements ................44...
  • Page 9 6 Commissioning ....................77 6.1 Inspection Before Commissioning..............77 6.2 Commissioning Procedure ................77 7 iSolarCloud App ....................80 7.1 About iSolarCloud ..................80 7.2 Install iSolarCloud ..................81 7.3 User Identity....................82 7.4 Device Commissioning .................82 8 System Decommissioning ................83 8.1 Disconnecting the Inverter................83 8.2 Dismantling the Inverter ................83 8.3 Disposal of Inverter..................84 9 Troubleshooting and Maintenance ..............85...

  • Page 11: Safety Instructions

    Level 6 or stronger winds. SUNGROW shall not be held liable for any damage to the device due to force majeure, such as...

  • Page 12: Unpacking And Inspection

    Perform operations considering ac- tual onsite conditions. • SUNGROW shall not be held liable for any damage caused by violation of gen- eral safety operation requirements, general safety standards, or any safety in- struction in this manual.

  • Page 13: Installation Safety

    User Manual 1 Safety Instructions Installation Safety • Make sure there is no electrical connection before installation. • Before drilling, avoid the water and electricity wiring in the wall. Improper installation may cause personal injury! • If the product supports hoisting transport and is hoisted by hoisting tools, no one is allowed to stay under the product.
  • Page 14 Determine the specifications of AC circuit breakers strictly in compliance with the applicable local laws and regulations and safety standards or the recom- mendation by SUNGROW. Otherwise, the switch may not open in time in the event of something abnormal, which may then lead to safety incidents.

  • Page 15: Operation Safety

    User Manual 1 Safety Instructions Operation Safety When routing cables, ensure a distance of at least 30 mm between the cables and heat-generating components or areas to protect the insulation layer of cables from aging and damage. When the product is working: •...
  • Page 16 To avoid the risk of electric shock, do not perform any other maintenance opera- tions beyond those described in this manual. If necessary, contact your distributor first. If the problem persists, contact SUNGROW. Otherwise, the losses caused is not covered by the warranty.

  • Page 17: Disposal Safety

    User Manual 1 Safety Instructions Disposal Safety Please scrap the product in accordance with relevant local regulations and stand- ards to avoid property losses or casualties.

  • Page 18: Product Description

    Product Description System Introduction The SG150CX inverter is a three-phase grid-connected string PV inverter without a transformer. As an integral component of the PV power system, the inverter converts the DC generated from the PV strings into grid-compatible AC and feeds the AC into the utility grid.

  • Page 19: Product Introduction

    User Manual 2 Product Description Product Introduction Product Model The definition of the product model "SG150CX" is introduced as follows. Inverter External Design The external design of the inverter is shown below. figure 2-2 Inverter External Design *The figure here is for illustration only and the real product may differ.

  • Page 20: Signs On The Product

    Dimensions The overall dimensions of the inverter are shown below. Weight Weight Model ≤100 kg SG150CX Signs on the Product Sign Description Disconnect the inverter from all external power sources before inverter maintenance. Burn hazard due to the hot surface that may exceed 60℃.

  • Page 21: Led Indicator

    User Manual 2 Product Description Sign Description Danger to life due to high voltages! After the inverter is disconnected from the external power source, wait at least 5 minutes before touching any of its internal conductive parts. Installation and operation must only be performed by qualified technical persons.

  • Page 22: Circuit Diagram

    2 Product Description User Manual LED Color State Definition Slow blink once, fast The inverter is performing PID recovery. blink three times A fault occurs and the device cannot connect to the grid. The Bluetooth connection is established, data commu- Blink nication in process, and a system fault occurs.

  • Page 23: Function Description

    • The communication accessory port is used to connect communication module manufac- tured by SUNGROW, and upload monitoring data by means of wireless communication. The inverter can be connected to communication devices via either of the two interfaces. When communication is established between the inverter and the communication devices, users can view inverter information or set inverter parameters, such as running parameter and protection parameter, through the iSolarCloud.
  • Page 24 2 Product Description User Manual Protection Function The inverter is equipped with anti-island protection, LVRT/HVRT, DC reversed polarity pro- tection, AC short circuit protection, leakage current protection, DC over-voltage/over-current protection, etc. PID Recovery The PID effect (Potential Induced Degradation) of PV modules will cause serious damage to generated output and yield, which can be avoided or recovered by PID recovery function.
  • Page 25 User Manual 2 Product Description AFCI Function • AFCI activation This function can be enabled to detect whether arc occurs in the DC circuit of the inverter. • AFCI self-test This function is intended to detect whether the AFCI function of the inverter is normal.

  • Page 26: 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 27 User Manual 3 Unpacking and Storage • Do not store the inverter in places susceptible to direct sunlight, rain, and strong electric field. • Do not place the inverter in places with items that may affect or damage the inverter. •...

  • Page 28: Mechanical Mounting

    " " 4.2.1 Installation Environment Requirements" " . In case the environment where the product is in- stalled does not meet the requirements, SUNGROW shall not be held liable for any property damage arising therefrom. Improper handling may cause personal injury! •...

  • Page 29: Location Requirements

    User Manual 4 Mechanical Mounting Location Requirements To a large extent, a proper installation location ensures safe operation, service life, and per- formance of the inverter. • The inverter with protection rating IP66 can be installed both indoors and outdoors. •...

  • Page 30: Installation Environment Requirements

    4 Mechanical Mounting User Manual 4.2.1 Installation Environment Requirements • The inverter produces noise during operation, thus it is not recommended to install it in places for residential purpose. If this cannot be avoided, it is recommended to install the inverter in a place over 25 meters away from the residential area, or take noise mitigation measures.
  • Page 31 • Please consult SUNGROW before installing inverters outdoors in areas prone to salt damage, which mainly are coastal areas within 500 meters of the coast. The sedimenta- tion amount of salt spray is correlated to the characteristics of the seawater, sea winds, precipitation, air humidity, topography, and forest coverage in the adjacent sea areas, and there are substantial differences between different coastal areas.

  • Page 32: Carrier Requirements

    4 Mechanical Mounting User Manual 4.2.2 Carrier Requirements The mounting structure where the inverter is installed must comply with local/national stand- ards and guidelines. Ensure that the installation surface is solid enough to bear four times the weight of the inverter and is suitable for the dimensions of the inverter (e.g. cement walls, plasterboard walls, etc.).
  • Page 33 User Manual 4 Mechanical Mounting Backward Installation Requirements To install the inverter on level ground, add a rack under it to ensure the installation angle meets the specified requirements. The figure below presents an inverter mounted on a rack. Take into account the below requirements when designing a racking system for the inverter: •...

  • Page 34: Installation Space Requirements

    4 Mechanical Mounting User Manual In case of any questions, please contact SUNGROW. 4.2.4 Installation Space Requirements Space Required for Installing One Single Inverter Make sure there is sufficient space around the inverter for good ventilation. The space re- quirements for installing one inverter are shown in the figure below.
  • Page 35 User Manual 4 Mechanical Mounting Inverters Installed in an Inverted-T Pattern Inverters Installed at a Back Tilt in One Row (Not Recommended) See “Backward Installation Requirements” in "4.2.3 Installation Angle Requirements" for the racking system requirements for backward installation. Backward installation is not recommended as the inverter is prone to derate due to direct sunlight in this scenario.

  • Page 36: Installation Tools

    Scenarios". • To learn about the heat dissipation requirements for inverters installed indoors, please contact SUNGROW. Installation Tools Installation tools to be used include but are not limited to those listed below. If necessary, use other auxiliary tools at the site.
  • Page 37 User Manual 4 Mechanical Mounting Level Hammer drill (φ12) Rubber mallet Phillips screwdriver (M4, M6, M8) Open-end wrench Socket wrench set Wire strippers Wire cutter (16mm, 33mm) (M4, M8, M12) Slotted screwdriver Hydraulic pliers Heat gun Connector wrench (M2, M3, M6) Multimeter (≥1100V Electric drill (φ12) Vacuum cleaner...

  • Page 38: Move The Inverter

    4 Mechanical Mounting User Manual Move the Inverter Before installation, take the inverter out of the packing crate and move it to the target position. It is recommended to move the inverter using its top and bottom handles and the add-on handles.

  • Page 39: Install The Mounting Bracket

    User Manual 4 Mechanical Mounting Improper handling may lead to personal injury! • Properly decide the number of installation personnel to handle the inverter based on the inverter's weight. Installation personnel should wear protective equipment such as anti-impact shoes and safety gloves. •...

  • Page 40: Mounted On Pv Bracket

    4 Mechanical Mounting User Manual figure 4-2 Requirements of Space Reserved for Inverter Installation 4.5.1 Mounted on PV Bracket Tools Item Specifications Phillips screwdriver Marker Level Electric drill Drill bit: φ12 Wrench 16mm Required Materials Item Quantity Specifications Source Cross-slotted M4×10 Included in the scope of screw...

  • Page 41: Mounted On Pole

    User Manual 4 Mechanical Mounting Step 2 Put the mounting bracket assembly on the PV bracket, adjust its angle with the assistance of the level, and mark the hole positions for drilling. Then, drill holes at the corresponding posi- tions using an electric drill. Step 3 Fix the mounting bracket with bolts.
  • Page 42 4 Mechanical Mounting User Manual *Decide whether to use tools of different specifications based on the size of the bolts used for the matching clamp. Required Materials Item Quantity Specifications Source Cross-slotted M4×10 Included in the scope of screw delivery Bolt Included in the scope of assembly...

  • Page 43: Mounted On Wall

    User Manual 4 Mechanical Mounting Step 4 Fix the U-channels to the pole with bolts and clamps. Step 5 Fix the mounting bracket to the U-channels with bolts. - - End 4.5.3 Mounted on Wall Tools...
  • Page 44 4 Mechanical Mounting User Manual Item Specifications Phillips screwdriver Marker Level Hammer drill Drill bit: φ12 Wrench 16 mm Required Materials Item Quantity Specifications Source Cross-slotted M4×10 Included in the scope of screw delivery Expansion M10×95 Prepared by the user bolt (recommended) Step 1 Assemble the mounting bracket together by fixing the two sub-brackets to the two sides of...

  • Page 45: Mount The Inverter

    User Manual 4 Mechanical Mounting Step 3 Drill holes using a hammer drill, and clean the holes. Then, insert the expansion bolts into the holes, and tap the bolts using a rubber mallet to secure them in place. Next, tighten the nuts at the end of the bolts using a wrench to make the bolt sleeves expand.
  • Page 46 4 Mechanical Mounting User Manual Step 2 Hang the inverter to the mounting bracket. Ensure the inverter's mounting ears fit perfectly in- to the mounting bracket. Step 3 Fix the inverter to the mounting bracket with screws. The inverter's left and right sides must be fixed to the mounting bracket with screws, otherwise, the inverter may not be secure.

  • Page 47: Electrical Connection

    Electrical Connection Safety Instructions The PV string will generate lethal high voltage when exposed to sunlight. • Operators must wear proper personal protective equipment during electrical connections. • Must ensure that cables are voltage-free with a measuring instrument before touching DC cables. •...
  • Page 48 5 Electrical Connection User Manual All electrical connections must comply with local and national/regional electrical standards. • Cables used by the user shall comply with the requirements of local laws and regulations. • Only with the permission of the national/regional grid department, the inverter can be connected to the grid.

  • Page 49: Terminal Description

    Terminal Description Terminals of the SG150CX are located at its side and bottom, as shown in the figure below. figure 5-1 SG150CX Terminal Description *The figure is for reference only and the real product may differ.

  • Page 50: Electrical Connection Overview

    5 Electrical Connection User Manual *If the PE cable is a separate single-core cable, lead it through the spare grounding point in- to the AC junction box for wiring. *Before performing maintenance, ensure the inverter is shut down and all switches are disconnected.
  • Page 51 *If the aluminum cable is used, the copper-to-aluminum terminal is required. For details, re- fer to " Aluminum Cable Requirements". If a sealing plate intended for single-core cables is needed, please contact SUNGROW. table 5-2 PE Wire Requirements Cross-sectional area of the Remarks PE wire This rule applies only if the phase wires and the PE wire are identical in material.

  • Page 52: Crimp Ot/Dt Terminal

    5 Electrical Connection User Manual Crimp OT/DT terminal Crimp OT/DT terminal 1. Heat shrink tubing 2. OT/DT terminal 3. Hydraulic pliers 4. Heat gun Aluminum Cable Requirements If an Aluminum cable is selected, use a copper to Aluminum adapter terminal to avoid direct contact between the copper bar and the Aluminum cable.

  • Page 53: External Protective Grounding Connection

    AC side grounding terminal are reliably grounded. The grounding connection can be made by other means if they are in accordance with the local standards and regulations, and SUNGROW shall not be held liable for the possible consequences.

  • Page 54: External Protective Grounding Requirements

    5 Electrical Connection User Manual 5.5.1 External Protective Grounding Requirements All non-current carrying metal parts and device enclosures in the PV power system should be grounded, for example, subconstruction of PV modules and inverter enclosure. When there is only one inverter in the PV system, connect the external protective grounding cable to a nearby grounding point.
  • Page 55 Recommended Inverter Recommended Rated Current Rated Voltage SG150CX 400V 315A • An AC circuit breaker should be installed between the inverter AC side and the grid, to ensure the inverter can disconnect from the grid in a safe manner.

  • Page 56: Ot/Dt Terminal Requirements

    The apparent power of the inverter must not exceed the transformer power. The maxi- mum AC current of all inverters connected in parallel must be taken into account. If more than 25 inverters need to be connected to the grid, contact SUNGROW for more specific technical solutions first.

  • Page 57: Wiring Steps

    User Manual 5 Electrical Connection 5.6.3 Wiring Steps This section gives instructions on wiring using a five-core cable. These steps ap- ply to the four-core cable as well. Step 1 Switch off the AC-side circuit breaker and prevent it from switching on inadvertently. Step 2 Loosen the two screws on the front door of the AC junction box using the Allen wrench (in- cluded in the scope of delivery), and open the door.
  • Page 58 5 Electrical Connection User Manual Step 4 Tear off the seal. Step 5 Lead the cable through the opening on the sealing plate.
  • Page 59 User Manual 5 Electrical Connection Step 6 Strip the external protective layer of the AC cable inside the junction box, by referring to the figure below. Crimp the OT/DT terminals onto the stripped wires, and then fix the wires to the corresponding terminals (for the tightening torques, see the torque label inside the junc- tion box).
  • Page 60 5 Electrical Connection User Manual Step 7 Tighten the screws on the bottom sealing plate. Pay attention to the connections of the PE and N wires. Connecting a phase wire to the position of the PE or N wire may lead to permanent damage to the inverter. Ensure that the inner depth L of the socket used is ≥28mm.

  • Page 61: Dc Cable Connection

    User Manual 5 Electrical Connection Step 8 Remove the restrictor rod and put it back in its original position, to release the restriction on the door of the junction box. Then, close the door and tighten the two screws on it using the Allen wrench.
  • Page 62 5 Electrical Connection User Manual • Make sure the PV array is well insulated to ground before connecting it to the inverter. • Make sure the maximum DC voltage and the maximum short circuit current of any string never exceed inverter permitted values specified in "Technical Data". •...

  • Page 63: Pv Input Configuration

    User Manual 5 Electrical Connection Note the following items when laying cables on site: • The axial tension on PV connectors must not exceed 80 N. Avoid axial cable stress on the connector for a long time during field wiring. •...
  • Page 64 5 Electrical Connection User Manual Open-circuit Voltage Limit of Each Max. Current for Input Connector Input 1100V Wiring Instructions If the number of PV strings is 10 to 21, it is recommended to perform DC input wiring by re- ferring to the table below. mber er of Stri-...
  • Page 65 User Manual 5 Electrical Connection mber er of Stri- Stri- DC PV Terminals DC PV Terminals Connect to PV1, PV2, PV3, PV4, PV5, Connect to PV1, PV2, PV3, PV4, PV6, PV7, PV8, PV10, PV11, PV13, PV5, PV6, PV7, PV8, PV9, PV10, PV14, PV16, PV17, PV19, PV20 PV11, PV13, PV14, PV16, PV17, PV19, PV20...

  • Page 66: Assembling Pv Connectors

    • Do not connect the AC circuit breaker before finishing electrical connection. SUNGROW provides corresponding PV connectors in the scope of delivery for quick connection of PV inputs. To ensure IP66 protection, use only the supplied connector or the connector with the same ingress of protection.

  • Page 67: Installing Pv Connector

    User Manual 5 Electrical Connection Step 4 Tighten the cable gland and the insulator. Step 5 Check for polarity correctness. If the PV polarity is reversed, the inverter will be in a fault or alarm state and will not operate normally. - - End 5.7.3 Installing PV Connector Step 1 Ensure that the DC switch is in "OFF"...
  • Page 68 5 Electrical Connection User Manual Step 2 Check the cable connection of the PV string for polarity correctness and ensure that the open circuit voltage in any case does not exceed the inverter input limit of 1100 V. The multimeter must have a DC voltage range of at least 1100 V. If the voltage is a negative value, the DC input polarity is incorrect.

  • Page 69: Communication Connection

    User Manual 5 Electrical Connection Communication Connection 5.8.1 Wireless Communication Module Connection (Optional) Install the wireless communication module to the communication interface with a silk screen of COM3 at the bottom of the inverter. *The image shown here is for reference only. The actual product you receive may differ. Once the communication module is in use, do not connect the inverter to a 3rd party data logger at the same time via RS485.

  • Page 70: Ethernet Communication

    5 Electrical Connection User Manual 5.8.2.1 Ethernet Communication Step 1 (Optional) Strip the insulation layer of the communication cable with an Ethernet wire strip- per, and lead the corresponding signal cables out. Insert the stripped communication cable into the RJ45 plug in the correct order, and crimp it with a crimper. 1: RJ45 plug 2: Protective cap Skip this step if a standard network cable with RJ45 plug is prepared.
  • Page 71 User Manual 5 Electrical Connection Step 4 Thread the network cable through the swivel nut and gasket. Afterwards, route the cable into the opening of the sealing. Finally, insert the cable through the housing. Step 5 Insert the RJ45 plug into the front plug connector until there is an audible click and tighten the housing.

  • Page 72: Wlan Communication

    5 Electrical Connection User Manual 5.8.2.2 WLAN Communication Step 1 Remove the waterproof lid from the COM1 terminal. Step 2 Install the module. Slightly shake it by hand to determine whether it is installed firmly, as shown below. Step 3 Refer to the guide delivered with the module for the set-up. - - End 5.8.3 Communication Junction Box Remove the Communication Junction Box...

  • Page 73: Communication Wiring Area

    User Manual 5 Electrical Connection 5.8.4 Communication Wiring Area The communication wiring area of the inverter is composed of two communication terminal boards, with the upper one mainly for RS485 communication interfaces and the lower for DI/ DO interfaces. table 5-3 Terminal Description Description Label RS485_1...

  • Page 74: Rs485 Connection

    5 Electrical Connection User Manual Description Label RS485_3 Used to connect an external energy meter. LOCAL STOP Emergency stop. For external Demand Response Enabling Device ("AU"/ "NZ") ALARM It can be used to connect an external LED indicator or oth- er indication device to show whether the inverter is in the fault state.
  • Page 75 User Manual 5 Electrical Connection The terminals are defined as follows: table 5-4 RS485_1 Definition RS485A OUT, RS485A differential signal (+) RS485A IN, RS485A differential signal (+) RS485B OUT, RS485B differential signal (-) RS485B IN, RS485B differential signal (-)

  • Page 76: Rs485 Communication Wiring

    5 Electrical Connection User Manual table 5-5 RS485_2 Definition RS485A OUT, RS485A differential signal (+) RS485A IN, RS485A differential signal (+) RS485B OUT, RS485B differential signal (-) RS485B IN, RS485B differential signal (-) table 5-6 RS485_3 Definition RS485A differential signal (+) RS485B differential signal (-) 5.8.5.2 RS485 Communication Wiring Communication of One Inverter...

  • Page 77: Connection Procedure (Terminal Block)

    User Manual 5 Electrical Connection The RS485 communication cable should not exceed 1200m. If multiple inverters are connected to the intelligent communication box for com- munication, ensure the maximum number of daisy chains and connected devices meet the relevant requirements (see the user manual for the intelligent communi- cation box).
  • Page 78 5 Electrical Connection User Manual Step 4 Lead the cable through the swivel nut, the sealing ring and the junction box in sequence. Outer Diameter D(mm) Sealing Rings 4.5 ~ 6 6 ~12 a + b 12 ~ 18 Step 5 Connect cables to the terminal socket. Step 6 Insert the terminal socket into the corresponding terminal block.

  • Page 79: Connection Procedure (Rj45 Interface)

    User Manual 5 Electrical Connection Step 9 Pull slightly the cable backward and screw the swivel nut clockwise. - - End 5.8.5.4 Connection Procedure (RJ45 Interface) Step 1 Remove the communication junction box, referring to" Remove the Communication Junction Box". Step 2 Unscrew the swivel nut of the junction box and select the sealing ring according to the cable diameter.

  • Page 80: Smart Energy Meter Connection

    RJ45 connector (pins 3 and 6 are used for communication). Use the RJ45 crimping tool to crimp the RJ45 connector. Pins 1 and 2 supply power to the SUNGROW communication module. Do not con- nect or use these two pins when making an RS485 communication cable. Other- wise, the inverter or other devices connected through the communication cable may be damaged.

  • Page 81: Dry Contact Connection

    The inverter is equipped with the feed-in power limit function, so as to meet the requirements of some national standards or grid standards for the output power at the grid connection point. Contact SUNGROW to ensure that the Smart Energy Meter model is available locally. Procedure For detailed connection description of the Smart Energy Meter cable, refer to the section “RS485 Conmmunication System”...
  • Page 82 5 Electrical Connection User Manual figure 5-5 Normally open contact figure 5-6 Normally closed contact Devices connected to the relay should comply with related requirements: AC-Side Requirements DC-Side Requirements Max. voltage: 230 Vac Max. voltage: 24 Vdc Max. current: 3 A Max.

  • Page 83: Wiring Procedure

    User Manual 5 Electrical Connection The dry contacts only support passive switch signal input. The following figure shows the typical application of local stop dry contact. figure 5-7 Local stop contact figure 5-8 Daisy chain topology When wiring DI dry contacts, ensure that the maximum wiring distance meet the require- ments in "10.2 Wring Distance of DI Dry Contact".
  • Page 84 20 kΩ Enable the DRM function through the iSolarCloud App. If there are any problems, contact your distributor first. If the problem persists, contact SUNGROW. The DRM function is only applicable to devices for Australia and New Zealand. Only DRM0 is supported by the inverter.

  • Page 85: Connection Procedure

    User Manual 5 Electrical Connection table 5-9 Method of Asserting DI Mode Output power (in % of the Max. Switch Operation on AC output power) External RCR None 100% Close S1 100% Close S2 Close S3 0% (disconnect from grid) Close S1 and S2 5.8.8.2 Connection Procedure Step 1 Remove the communication junction box, referring...
  • Page 86 5 Electrical Connection User Manual Step 3 Strip the insulation layer of the Ethernet cable with a wire stripper, and insert the signal wires to the RJ45 connector. Crimp the RJ45 connector with a crimping tool. Assignment for inverters capable of both charging and discharging DRM 1/5 DRM 2/6...

  • Page 87: Commissioning

    Commissioning Inspection Before Commissioning Check the following items before starting the inverter: • All equipment has been reliably installed. • DC switch(es) and AC circuit breaker are in the "OFF" position. • The ground cable is properly and reliably connected. •...
  • Page 88 6 Commissioning User Manual Step 2 If the indicator is on, turn the other DC switches to “ON”. • If the inverter indicator is not on after 30 seconds, do not close the DC switches (SWITCH1, SWITCH2 with red knobs), and meanwhile turn off the auxiliary switch. Check if the input cable is connected in reversed polarity, or if the input voltage meets the requirements for startup voltage.
  • Page 89 User Manual 6 Commissioning Step 4 Close the AC circuit breaker between the inverter and the grid. Step 5 Install the iSolarCloud App, see "7.2 Install iSolarCloud" for details. Step 6 It is required to set initial protection parameters on the iSolarCloud App when the inverter is connected to the grid for the first time.

  • Page 90: Isolarcloud App

    Bluetooth module to enable mobile maintenance of the inver- ter. Users can check the information about and set parameters for the inverter. Login via Bluetooth connection is applicable only for SUNGROW inverters with built-in Bluetooth modules. Please consult your retailer/installer about whether the inverter is equipped with a Bluetooth module.

  • Page 91: Install Isolarcloud

    User Manual 7 iSolarCloud App Install iSolarCloud This section introduces how to download and install the iSolarCloud App. Procedure Step 1 Search for iSolarCloud in App Store, Google Play or other App stores, or scan the QR code below with a mobile phone and download the App by following the onscreen instructions.

  • Page 92: User Identity

    7 iSolarCloud App User Manual Step 2 Tap the downloaded installation package and follow the onscreen instructions to complete the installation. The icon of iSolarCloud will then appear on the screen. - - End User Identity There are two types of user accounts: Owner and Retailer/Installer. The Owner can view the plant information, create a plant, set common parameters, and share a plant, etc.

  • Page 93: System Decommissioning

    System Decommissioning Disconnecting the Inverter Danger of burns! Even if the inverter is shut down, it may still be hot and cause burns. Wear protec- tive gloves before operating the inverter after it cools down. For maintenance or other service work, the inverter must be switched off. Proceed as follows to disconnect the inverter.

  • Page 94: Disposal Of Inverter

    8 System Decommissioning User Manual Step 1 Refer to "5 Electrical Connection" to disconnect all cables in reverse steps. In particular, when removing the DC connector, use a connector wrench to loosen the locking parts and install waterproof plugs. Step 2 Refer to "4 Mechanical Mounting", to dismantle the inverter in reverse steps.

  • Page 95: Troubleshooting And Maintenance

    App or the LCD. Modify the overvoltage protection values with the con- sent of the local electric power operator. 3. Contact Sungrow Customer Service if the pre- ceding causes are ruled out and the fault persists. Generally, the inverter will be reconnected to the grid after the grid returns to normal.
  • Page 96 2. Check whether the protection parameters are appropriately set via the App or the LCD. 3. Contact Sungrow Customer Service if the pre- ceding causes are ruled out and the fault persists. Generally, the inverter will be reconnected to the grid after the grid returns to normal.
  • Page 97 App or the LCD. 3. Contact Sungrow Customer Service if the pre- ceding causes are ruled out and the fault persists. 1. Check whether the corresponding string is of reverse polarity.
  • Page 98 3. Check if the DC fuse is damaged. If so, replace Alarm the fuse. 4. Contact Sungrow Customer Service if the pre- ceding causes are ruled out and the alarm persists. *The code 548 to code 563 are corresponding to string 1 to string 16 respectively.
  • Page 99 If so, replace the dam- aged cable and secure terminals to ensure a reli- able connection. 5. Contact Sungrow Customer Service if the pre- ceding causes are ruled out and the fault persists. 1. Check whether the AC cable is correctly connected.
  • Page 100 2. Reconnect the communication cable of the cation Abnormal meter. Alarm 3. Contact Sungrow Customer Service if the pre- ceding causes are ruled out and the alarm persists. 1. Check whether the output port is connected to actual grid. Disconnect it from the grid if so.
  • Page 101 Close the AC and DC switches in turn 15 124, 200–211, 248–255, 300– minutes later and restart the system. 322, 324–328, 3. Contact Sungrow Customer Service if the pre- 401–412, 600– ceding causes are ruled out and the fault persists. 603, 605, 608, 612, 616, 620, 622–624, 800,...
  • Page 102 Close the AC and DC switches in turn 15 364-395 Overvoltage Fault minutes later and restart the system. 2. If the fault persists, please contact Sungrow Power Customer Service. 1. Check whether the number of PV modules of the corresponding string is less than other strings.

  • Page 103: Maintenance

    User Manual 9 Troubleshooting and Maintenance Contact the dealer if the measures listed in the “Troubleshooting Method” column have been taken but the problem persists. Contact SUNGROW if the dealer fails to solve the problem. Maintenance 9.2.1 Maintenance Notices Risk of inverter damage or personal injury due to incorrect service! •...

  • Page 104: Routine Maintenance

    To avoid the risk of electric shock, do not perform any other maintenance opera- tions beyond this manual. If necessary, contact your distributor first. If the problem persists, contact SUNGROW. Otherwise, the losses caused is not covered by the warranty.

  • Page 105: Cleaning Air Inlet And Outlet

    User Manual 9 Troubleshooting and Maintenance Item Method Period Check whether the cable entry is in- sufficiently sealed or the gap is exces- Cable entry Once a year sively large, and reseal the entry when necessary. Check whether cables are loose or fall off.
  • Page 106 9 Troubleshooting and Maintenance User Manual Step 2 Loosen the screw on the cover plate for the fans of the inverter. Step 3 Press the key on the connector to release its locking element, and pull the connector out. Then, loosen the screws on the fan holder.
  • Page 107 User Manual 9 Troubleshooting and Maintenance Step 4 Loosen the screws on the side of the fans. Step 5 Pull out the fan holder and clean the fans using a soft brush or a vacuum cleaner. Replace the fan if it is damaged. - - End...

  • Page 108: Appendix

    10 Appendix 10.1 Technical Data Parameter SG150CX Input (DC) Recommended max. PV input 210 kWp power Max. PV input voltage 1100V Min.PV input voltage/Startup in- 180 V / 200 V put voltage Rated input voltage 600V MPPT voltage range 180 ~ 1000 V MPPT voltage range for rated 550 V –...
  • Page 109 User Manual 10 Appendix Parameter SG150CX Output (AC) Harmonic ( THD ) ≤1 % ( at 400 V A C voltage and rated power) Power factor at rated power / > 0.99 / 0.8 leading – 0.8 lagging Adjustable power factor...
  • Page 110 Note 2: The voltage difference between MPPTs should be less than 200 V. The voltage of the configured string should be higher than the lower limit of the rated MPPT voltage. Note 3: For SR20D-M RSD compatibility, please consult Sungrow before placing an order.

  • Page 111: Wring Distance Of Di Dry Contact

    User Manual 10 Appendix 10.2 Wring Distance of DI Dry Contact The wiring distance between DI dry contact terminals must meet the requirements in the ta- ble below. The wiring distance L is the total length of all DI signal cables. refers to the cable length in one direction between the DI dry contact terminal of the k verter and the corresponding terminal of the (k-1) inverter.

  • Page 112: Quality Assurance

    • 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.

  • Page 113: Contact Information

    The damage is caused by unexpected natural factors. For faulty products in any of above cases, if the customer requests maintenance, paid main- tenance service may be provided based on the judgment of SUNGROW. Product data such as product dimensions are subject to change without prior no- tice.
  • Page 114 Sungrow Power Supply Co., Ltd. www.sungrowpower.com...

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