Sungrow SG125CX-P2 User Manual
  1. Manuals
  2. Brands
  3. Sungrow Manuals
  4. Inverter
  5. SG125CX-P2
  6. User manual

Sungrow SG125CX-P2 User Manual

Pv grid-connected inverter
Hide thumbs Also See for SG125CX-P2:
Table of Contents

Advertisement

Quick Links

User Manual
PV Grid-Connected Inverter
SG125CX-P2 / SG110CX-P2 / SG75CX-P2
SG125_110_75CX-P2-UEN-Ver15-202304

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the SG125CX-P2 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Sungrow SG125CX-P2

Summary of Contents for Sungrow SG125CX-P2

  • Page 1 User Manual PV Grid-Connected Inverter SG125CX-P2 / SG110CX-P2 / SG75CX-P2 SG125_110_75CX-P2-UEN-Ver15-202304...

  • 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

    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 au­...
  • Page 5 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 product performance in an efficient way. Please carefully understand the meaning of these warning symbols to better use the manual. DANGER Indicates high-risk potential hazards that, if not avoided, may lead to death or serious injury.

  • Page 6: 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....................2 1.3 Electrical Connection Safety.................3 1.4 Operation Safety....................4 1.5 Maintenance Safety....................5 1.6 Disposal Safety.....................6 2 Product Description ....................
  • Page 7 4.5 Installing Mounting-bracket.................26 4.5.1 PV Bracket-Mounted Installation.............. 27 4.5.2 Wall-Mounted Installation................. 28 4.5.3 Pole-Mounting...................30 4.6 Installing Inverter....................33 5 Electrical Connection ..................35 5.1 Safety Instructions....................35 5.2 Terminal Description...................37 5.3 Electrical Connection Overview................39 5.4 Crimp OT/DT terminal..................42 5.5 External Protective Grounding Connection............43 5.5.1 External Protective Grounding Requirements..........
  • Page 8 5.14 Dry Contact Connection................... 76 5.14.1 Dry Contact Function................76 5.14.2 Wiring Procedure..................78 5.15 DRM Connection....................79 5.15.1 DRM Function..................79 5.15.2 Connection Procedure................80 6 Commissioning ..................... 83 6.1 Inspection Before Commissioning..............83 6.2 Commissioning Procedure..................83 7 iSolarCloud App ....................85 7.1 Brief Introduction....................85 7.2 Installing App......................
  • Page 9 9.2.1 Maintenance Notices................118 9.2.2 Routine Maintenance................119 9.2.3 Cleaning Air Inlet and Outlet..............120 9.2.4 Fan Maintenance..................120 10 Appendix ......................123 10.1 Technical Data....................123 10.2 Wring Distance of DI Dry Contact..............132 10.3 Quality Assurance...................133 10.4 Contact Information..................134...

  • Page 10: Safety Instructions

    Perform operations considering actual 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 11: Unpacking And Inspection

    If there are problems with the above inspection items, do not install the device and contact your distributor first. If the problem persists, contact SUNGROW in time. 1.2   Installation Safety DANGER •...

  • Page 12: Electrical Connection Safety

    User Manual 1 Safety Instructions 1.3   Electrical Connection Safety DANGER • Before electrical connections, please make sure that the inverter is not damaged, otherwise it may cause danger! • Before electrical connections, please make sure that the inverter switch and all switches connected to the inverter are set to "OFF", otherwise electric shock may occur! DANGER...

  • Page 13: Operation Safety

    1 Safety Instructions User Manual WARNING • Check the positive and negative polarity of the PV strings, and connect the PV connectors to corresponding terminals only after ensuring polarity correctness. • During the installation and operation of the inverter, please ensure that the positive or negative poles of PV strings do not short-circuit to the ground.

  • Page 14: Maintenance Safety

    To avoid the risk of electric shock, do not perform any other maintenance operations beyond those described in this manual. If necessary, contact your distributor first. If the problem persists, contact SUNGROW. Otherwise, the losses caused is not cov­ ered by the warranty.

  • Page 15: Disposal Safety

    1 Safety Instructions User Manual NOTICE • If the paint on the inverter enclosure falls or rusts, repair it in time. Otherwise, the inverter performance may be affected. • Do not use cleaning agents to clean the inverter. Otherwise, the inverter may be damaged, and the loss caused is not covered by the warranty.

  • Page 16: Product Description

    Note Monocrystalline silicon, polycrystalline silicon and thin-film with­ PV strings out grounding. Inverter SG125CX-P2, SG110CX-P2, SG75CX-P2 Grid connection Includes devices such as AC circuit breaker, SPD, metering de­ cabinet vice. Boost the low voltage from the inverter to grid-compatible medi­...

  • Page 17: Product Introduction

    If the inverter is connected to the IT grid (i.e., no N line connection), there may be a risk of single-phase over/under-voltage and single-phase high/low voltage ride through. 2.2   Product Introduction Model Description The model description is as follows (Take SG125CX-P2 as an example):...
  • Page 18 User Manual 2 Product Description Appearance figure 2-2 Inverter Appearance * The image shown here is for reference only. The actual product received may differ. Name Description LED indicator pan­ HMI interface to indicate the present working state of the in­ verter.

  • Page 19: Symbols On Product

    2 Product Description User Manual figure 2-3 Product Dimensions(in mm) Weight Model Weight SG125/110CX-P2 87 kg SG75CX-P2 82 kg 2.3   Symbols on Product Symbol Explanation Do not dispose of the inverter together with household waste. TÜV mark of conformity. CE mark of conformity.

  • Page 20: Led Indicator

    User Manual 2 Product Description Symbol Explanation Danger to life due to high voltages! Do not touch live parts for 5 minutes after disconnection from the power sources. Only qualified personnel can open and maintain the inverter. External protective grounding terminal. Read the user manual before maintenance! * The table shown here is for reference only.

  • Page 21: Circuit Diagram

    2 Product Description User Manual LED Color State Definition Both the AC and DC sides are powered down. Gray WARNING Voltage may still be present in AC side circuits after the indicator is off. Pay attention to the electricity safety when operating. 2.5  ...

  • Page 22: 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...
  • Page 23 2 Product Description User Manual PID Recovery The PID function may not be applicable in some areas. Please consult SUNGROW for details. 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 24 PID recovery in the iSolarCloud App before manually powering on and maintaining the inverter. AFCI Function The AFCI function may not be applicable in some areas. Please consult SUNGROW for details. • AFCI activation This function can be enabled to detect whether arc occurs in the DC circuit of the inverter.
  • Page 25 2 Product Description User Manual The following two reconnection methods are available for this device. 1 Manual reconnection Reconnection can only be performed manually after arc interruption. 2 Remote manual reconnection Reconnection can be performed via remote access to the AFPE after arc interruption.

  • Page 26: Unpacking And Storage

    • Check the scope of delivery for completeness according to the packing list. • 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.
  • Page 27 3 Unpacking and Storage User Manual • Do not place the inverter in places with items that may affect or damage the inverter. • Store the inverter in a clean and dry place to prevent dust and water vapor from eroding. •...

  • Page 28: Mechanical Mounting

    4   Mechanical Mounting WARNING Respect all local standards and requirements during mechanical installation. 4.1   Safety During Mounting DANGER Make sure there is no electrical connection before installation. Before drilling, avoid the water and electricity wiring in the wall. WARNING Poor installation environment will affect system performance! •...

  • Page 29: Location Requirements

    4 Mechanical Mounting User Manual NOTICE When installing devices, ensure that no device in the system causes it hard for the DC switch and the AC circuit breaker to act or hinders maintenance personnel from operating. If drilling is required during installation: •...

  • Page 30: Carrier Requirements

    User Manual 4 Mechanical Mounting • Do not install the inverter outdoors in areas with high salinity, which mainly refer to the ar­ eas within 500 m away from the coast. The deposition of salt fog varies largely with near­ by seawater characteristics, sea wind, precipitation, relative humidity, terrain, and forest coverage.
  • Page 31 4 Mechanical Mounting User Manual tilting backwards installation requirements In case the installation site is a level surface, mount the inverter to the horizontal-mounting bracket to meet the mounting angle requirements, as shown in the figure below. Take the following items into account when designing the bracket scheme: •...

  • Page 32: Clearance Requirements

    Spacing for installing multiple inverters In case of multiple inverters, reserve specific clearance between the inverters. For other instal­ lation scenarios, please refer to the relevant technical documents on http://support.sungrow­ power.com/. Back to Back Installation When installing inverters back-to-back, the distance between every two inverters should be at least 600 mm.

  • Page 33: Installation Tools

    4 Mechanical Mounting User Manual 4.3   Installation Tools Installation tools include but are not limited to the following recommended ones. If necessary, use other auxiliary tools on site. table 4-1 Tool specification Goggles Earplugs Dust mask Safety gloves Safety shoes Utility knife Slotted screwdriver Phillips screwdriver...

  • Page 34: Moving Inverter

    User Manual 4 Mechanical Mounting Rubber mallet Socket wrench set Open-end wrench Anti-static wrist strap (M4, M8, M12) (16 mm, 33 mm) Wire cutter Wire stripper Hydraulic plier Heat gun Crimping tool Connector wrench Multimeter RJ45 crimping tool 4–6mm ≥ 1100 Vdc Vacuum cleaner Allen wrench Electric drill (φ12)

  • Page 35: Installing Mounting-Bracket

    4 Mechanical Mounting User Manual CAUTION Improper handling may cause personal injury! • Arrange an appropriate number of personnel to carry the inverter according to its weight, and installation personnel should wear protective equipment such as anti-impact shoes and gloves. •...

  • Page 36: Pv Bracket-Mounted Installation

    User Manual 4 Mechanical Mounting figure 4-1 Dimensions of Mounting-bracket 4.5.1 PV Bracket-Mounted Installation Tools Item Specification Phillips screwdriver / electric screw driver Marker Level Electric drill Drill bit: φ12 Wrench Opening: 16 mm Spare parts Item Quantity Specification Source Grub screw M4×10 Delivery scope...

  • Page 37: Wall-Mounted Installation

    4 Mechanical Mounting User Manual step 2 Level the assembled mounting-bracket by using the level, and mark the positions for drilling holes on the PV bracket. Drill the holes by using a electric drill. step 3 Secure the mounting-bracket with bolts. (A) Mounting-bracket (B) Full threaded bolt (C) Metal bracket...
  • Page 38 User Manual 4 Mechanical Mounting Spare parts Item Quantity Specification Source Grub screw M4×10 Delivery scope Bolt assembly M10×95 (Recom­ Self-prepared mended) step 1 Assemble the mounting-bracket. step 2 Level the assembled mounting-bracket by using the level, and mark the positions for drilling holes. step 3 Insert the expansion bolts into the holes and secure them with a rubber hammer.

  • Page 39: Pole-Mounting

    4 Mechanical Mounting User Manual After removing the nut, spring washer, and flat washer, level the front of the expansion tube with the wall. Otherwise, the mounting brackets will not stay steady on the wall. step 4 Install the mounting-bracket to the wall with the expansion bolts with the expansion bolts. (A) Wall (B) Expansion bolt (C) Mounting-bracket...
  • Page 40 User Manual 4 Mechanical Mounting Item Quantity Specification Source Clamp Determined by pole size Self-prepared step 1 Bury the pole into the installation site. Please skip this step if the inverter is to be installed on a concrete post, PV bracket, etc. step 2 Assemble the mounting-bracket.
  • Page 41 4 Mechanical Mounting User Manual step 5 Use bolts to secure the mounting-bracket to the U-beam. - - End...

  • Page 42: Installing Inverter

    User Manual 4 Mechanical Mounting 4.6   Installing Inverter Tools Item Specification Phillips screwdriver / electric screw driver Spare parts Item Quantity Specification Source Grub screw M6×65 Delivery scope step 1 Take out the inverter from the packing case. step 2 Hang the inverter to the mounting-bracket and ensure that the mounting ears perfectly engage with the mounting-bracket.
  • Page 43 4 Mechanical Mounting User Manual NOTICE It is necessary to fix the left and right sides of the inverter with screws. Otherwise, the inverter may be unstable. - - End...

  • Page 44: Electrical Connection

    5   Electrical Connection 5.1   Safety Instructions DANGER The PV string will generate lethal high voltage when exposed to sunlight. • Operators must wear proper personal protective equipment during electrical con­ nections. • Must ensure that cables are voltage-free with a measuring instrument before touching DC cables.
  • Page 45 5 Electrical Connection User Manual WARNING Do not damage the ground conductor. Do not operate the product in the absence of a properly installed ground conductor. Otherwise, it may cause personal injury or product damage. Please use measuring devices with an appropriate range. Overvoltage can damage the measuring device and cause personal injury.

  • Page 46: Terminal Description

    User Manual 5 Electrical Connection NOTICE • After being crimped, the OT terminal must wrap the wires completely, and the wires must contact the OT terminal closely. • When using a heat gun, protect the device from being scorched. • Keep the PV+ cable and PV– cable close to each other when connecting DC input cables.
  • Page 47 5 Electrical Connection User Manual figure 5-1 Terminal Description(SG125/110CX-P2) figure 5-2 Terminal Description(SG75CX-P2) * The image shown here is for reference only. The actual product received may differ. Item Terminal Mark Note 24 pairs of terminals(SG125/110CX-P2) PV terminals + / - 16 pairs of terminals（SG75CX-P2) DC Switch DC SWITCH...

  • Page 48: Electrical Connection Overview

    User Manual 5 Electrical Connection Item Terminal Mark Note External pro­ tective use at least one of them to ground the inverter. grounding ter­ minal *If the PE cable is an independent single-core cable, it should be inserted into the AC junction box through the standby grounding terminal.
  • Page 49 5 Electrical Connection User Manual Specification Cable Type Cable Diame­ Cross-sectional Area(m­ ter(mm) Outdoor five-core 30 ~ 60 copper wire cable L1, L2, L3, N wire: 70 ~ L1, L2, L3, N Outdoor four-core PE wire: refer to table 5-2 wire: 30 ~ 60 wire copper cable PE Wire Requirements...
  • Page 50 Other sizes of grounding cables that meet local standards and safety regulations can also be used for grounding connections. But SUNGROW shall not be held liable for any damage caused.

  • Page 51: Crimp Ot/Dt Terminal

    5 Electrical Connection User Manual 5.4   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 52: External Protective Grounding Connection

    User Manual 5 Electrical Connection NOTICE Ensure that the selected terminal can directly contact with the copper bar. If there are any problems, contact the terminal manufacturer. Ensure that the copper bar is not in direct contact with the aluminum wire. Otherwise, electrochemical corrosion may occur, impairing the reliability of electrical connection.

  • Page 53: External Protective Grounding Requirements

    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: Ac Cable Connection

    AC Circuit Breaker An independent circuit breaker or fuse should be installed on the output side of the inverter to ensure safe disconnection from the grid. Recommended Rated Volt­ Recommended Rated Cur­ Inverter  Model rent SG125CX-P2 400V 250A SG110CX-P2 400V 250A SG75CX-P2...
  • Page 55 However if an external residual current device (RCD) (type A is recommended) is mandatory, the switch must be triggered at the residual current. RCD of other specifications can also be used according to local standard. The recommended residual current is as follows. Inverter Recommended Residual Current SG125CX-P2 1250 mA SG110CX-P2 1100 mA SG75CX-P2...

  • Page 56: Requirements For Ot/Dt Terminal

    User Manual 5 Electrical Connection recommended that the total number of inverters that are connected to the grid not exceed • The transformer must be protected against overloading and short circuit. • The transformer is an important part of grid-connected PV generation system. The fault tolerance capacity of the transformer should be taken into account at all times.

  • Page 57: Connection Procedure (For A Multi-Core Cable)

    5 Electrical Connection User Manual figure 5-5 Specifications of the Crimped OT/DT Terminal OT/DT Terminal of PE Wire • Specification: M12 5.6.3 Connection Procedure (For a multi-core cable) In this manual, description is given by using five-core cable as an example. The wiring of the four-core cable is the same.
  • Page 58 User Manual 5 Electrical Connection The screws on the sealing plate are captive screws. When the sealing plate is removed, the screws remain on it. step 4 Cut off the excess part of sealing ring according to cable diameter. step 5 Lead the cable with the protective layer stripped through the sealing ring and secure screws on the bottom sealing plate.
  • Page 59 5 Electrical Connection User Manual step 6 Open the protective cover. step 7 Connect cables with crimped OT/DT terminals to corresponding terminals and secure them. Please fasten AC terminals referring to the torque specified on the label inside the AC box.
  • Page 60 User Manual 5 Electrical Connection NOTICE Note the terminal positions of PE wire and N wire. If a phase wire is connected to the PE terminal or N terminal, unrecoverable damage may be caused to the inverter. Ensure that the depth L of the socket used is not less than 28mm. step 8 Close the protective cover.
  • Page 61 5 Electrical Connection User Manual step 9 Remove the limit rod and put it back. Close the junction box and tighten the two screws on the front cover using the supplied hexagon socket wrench. - - End *If the PE cable is an independent single-core cable, it is inserted into the cabinet through the standby grounding terminal.

  • Page 62: Connection Procedure (For A Single-Core Cable)

    User Manual 5 Electrical Connection 5.6.4 Connection Procedure (For a single-core cable) step 1 Disconnect the AC-side circuit breaker and prevent it from inadvertent reconnection. step 2 Loosen two screws on the front cover of the junction box using the supplied hexagon socket wrench, and open the junction box. Keep the cover of the junction box open during wiring with a limit rod attached to the cover.
  • Page 63 5 Electrical Connection User Manual The screws on the sealing plate are captive screws. When the sealing plate is removed, the screws remain on it. step 4 Cut off the excess part of sealing ring according to cable diameter. step 5 Lead the cable through the sealing ring and secure the screws on the bottom sealing plate.
  • Page 64 User Manual 5 Electrical Connection step 6 Open the protective cover. step 7 Connect cables with crimped OT/DT terminals to corresponding terminals and secure them. Please fasten AC terminals referring to the torque specified on the label inside the AC box.
  • Page 65 5 Electrical Connection User Manual NOTICE Note the terminal positions of PE wire and N wire. If a phase wire is connected to the PE terminal or N terminal, unrecoverable damage may be caused to the inverter. Ensure that the depth L of the socket used is not less than 28 mm. step 8 Close the protective cover.

  • Page 66: Dc Cable Connection

    User Manual 5 Electrical Connection step 9 Remove the limit rod and put it back. Close the junction box and tighten the two screws on the front cover using the supplied hexagon socket wrench. - - End 5.7   DC Cable Connection DANGER The PV string will generate lethal high voltage when exposed to sunlight.
  • Page 67 5 Electrical Connection User Manual WARNING • 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 68: Pv Input Configuration

    User Manual 5 Electrical Connection NOTICE Note the following items when laying out 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 69: Assembling Pv Connectors

    • Ensure all cables are voltage-free before performing electrical operations. • 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 70 User Manual 5 Electrical Connection step 4 Tighten the cable gland and the insulator. step 5 Check for polarity correctness. NOTICE If the PV polarity is reversed, the inverter will be in a fault or alarm state and will not operate normally.

  • Page 71: Installing Pv Connector

    5 Electrical Connection User Manual 5.7.3 Installing PV Connector step 1 Ensure that the DC switch is in "OFF" position. Otherwise, manually turn it to "OFF". 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 1,100 V.

  • Page 72: Wiring Of Tracking System Power Cable (Optional)

    User Manual 5 Electrical Connection step 4 Follow the foregoing steps to connect PV connectors of other PV strings. step 5 Seal any unused PV terminal with a terminal cap. - - End 5.8   Wiring of Tracking System Power Cable (optional) step 1 Please refer to step 1 and step 2 in 5.6.3 Connection Procedure (For a multi-core cable).

  • Page 73: Wireless Communication Module Connection(Optional)

    5 Electrical Connection User Manual The power cables for tracking system can be connected to any two phases among L1, L2, and L3. step 5 Close the protective cover. Close the junction box and tighten the two screws on the front cover using the supplied hexagon socket wrench.

  • Page 74: Winet-S Connection (Optional)

    User Manual 5 Electrical Connection *The image shown here is for reference only. The actual product you receive may differ. NOTICE Once the communication module is in use, do not connect the inverter to a 3rd party data logger at the same time via RS485. For details on module installation and configuration, refer to the manual delivered together with the module.
  • Page 75 5 Electrical Connection User Manual step 2 Unscrew the swivel nut from the communication module and take out the inner sealing ring. step 3 Unscrew the housing from the communication module. step 4 Thread the network cable through the swivel nut and gasket. Afterwards, route the cable into the opening of the sealing.

  • Page 76: Wlan Communication

    User Manual 5 Electrical Connection step 6 Remove the waterproof lid from the COM1 terminal and install WiNet-S. step 7 Slightly shake it by hand to determine whether it is installed firmly. - - End 5.10.2 WLAN Communication step 1 Remove the waterproof lid from the COM1 terminal. step 2 Install the module.

  • Page 77: Communication Junction Box

    5 Electrical Connection User Manual step 3 Refer to the guide delivered with the module for the set-up. - - End 5.11   Communication Junction Box Remove the Communication Junction Box Squeeze both sides of the communication junction box with force, and pluck it out. Install the Communication Junction Box Put the junction box back and ensure a firm connection.

  • Page 78: Communication Wiring Board

    User Manual 5 Electrical Connection 5.12   Communication Wiring Board The inverter communication board consists of two layers, RS485 communication interface on the upper layer, and DI/DO interface on the lower layer. table 5-3 Port description Silk Screen Description RS485_3 Used to connect the external meter Used to connect the external COM100E to realize da­...

  • Page 79: Rs485 Connection

    ALARM indicate whether the inverter is in the faulty state *Contact SUNGROW to ensure that the Smart Energy Meter model is available locally. The inverter can provide export control but will require the use of a external smart meter. The export control functionality has not been tested to AS/NZS 4777.2:2020.

  • Page 80: Rs485 Communication System

    User Manual 5 Electrical Connection Description PIN 4 ~ 5 PIN 6 RS485A differential signal+ PIN 7 ~ 8 table 5-6 RS485_3 terminal description Description RS485A differential signal+ RS485B differential signal- NOTICE RJ45 and terminal block are two types of RS485_1 interface with same functions and different wiring methods. Choose one of the interfaces for wiring.

  • Page 81: Connection Procedure(Terminal Block)

    5 Electrical Connection User Manual figure 5-6 Multi-inverter Communication Sys­ tem 【RS485_1 interface (terminal block)】 figure 5-7 Multi-inverter Communica­ tion System 【RS485_1 interface (RJ45)】 The length of an RS485 cable cannot exceed 1200m. If multiple inverters communicate via the smart communication box, the number of permissible daisy chains and the number of devices allowed to be connected should meet the requirements (refer to the user manual of the smart communication box).
  • Page 82 User Manual 5 Electrical Connection step 3 Strip off the protective layer and insulation layer of proper length. 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...

  • Page 83: Connection Procedure (Rj45 Interface)

    5 Electrical Connection User Manual step 7 If other cables should be connected to the communication circuit board, skip the subsequent steps and continue wiring. Otherwise, perform as follows. step 8 Install the communication junction box, referring toInstall the Communication Junction Box。...
  • Page 84 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 connect or use these two pins when making an RS485 communication cable. Otherwise, the inverter or other devices connected through the communication cable may be damaged.

  • Page 85: Dry Contact Connection

    5 Electrical Connection User Manual 5.14   Dry Contact Connection 5.14.1 Dry Contact Function The configuration circuit board is provided with fault output dry contact and emergency stop dry contact, as shown in the figure below. DO terminal (fault output dry contact) The relay can be set to output fault alarms, and user can configure it to be a normally open contact (COM＆NO) or a normally closed contact (COM＆NC).
  • Page 86 User Manual 5 Electrical Connection figure 5-8 Normally open contact figure 5-9 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 87: Wiring Procedure

    5 Electrical Connection User Manual The dry contacts only support passive switch signal input. The following figure shows the typical application of local stop dry contact. figure 5-10 Local stop contact figure 5-11 Daisy chain topology When wiring DI dry contacts, ensure that the maximum wiring distance meet the requirements 10.2 Wring Distance of DI Dry Contact.

  • Page 88: Drm Connection

    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. Ripple Control In Germany, the grid company uses the Ripple Control Receiver to convert the grid dispatching signal and send it as a dry contact signal.

  • Page 89: Connection Procedure

    5 Electrical Connection User Manual table 5-9 Method of Asserting DI Mode Switch Operation on Output power (in % of the Max. External RCR AC output power) None 100% Close S1 100% Close S2 Close S3 Close S1 and S2 0% (disconnect from grid) 5.15.2 Connection Procedure step 1 Remove the communication junction box, referring...
  • Page 90 User Manual 5 Electrical Connection Outer Diameter D(mm) Sealing Rings 6 ~ 12 a + b 12 ~ 18 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...
  • Page 91 5 Electrical Connection User Manual step 6 Pull slightly the cable backward and screw the swivel nut clockwise. - - End...

  • Page 92: Commissioning

    6   Commissioning 6.1   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 93 6 Commissioning User Manual step 2 Close the AC circuit breaker between the inverter and the grid. step 3 Install the iSolarCloud App, see 7.2 Installing App for details. step 4 Set initial protection parameters via the iSolarCloud App when the inverter is connected to the grid for the first time (see Step 4 in 7.3.2 Login Procedure for details).

  • Page 94: Isolarcloud App

    7   iSolarCloud App 7.1   Brief Introduction The iSolarCloud App can establish communication connection to the inverter via the Bluetooth, thereby achieving near-end maintenance on the inverter. Users can use the App to view basic information, alarms, and events, set parameters, or download logs, etc. *In case the communication module Eye, WiFi or WiNet-S is available, the iSolarCloud App can also establish communication connection to the inverter via the mobile data or WiFi, thereby achieving remote maintenance on the inverter.

  • Page 95: Login

    7 iSolarCloud App User Manual The App icon appears on the home screen after installation. 7.3   Login 7.3.1 Requirements The following requirements should be met: • The AC or DC side of the inverter is powered-on. • The mobile phone is within 5 meters away from the inverter and there are no obstructions in between.
  • Page 96 User Manual 7 iSolarCloud App figure 7-1 Bluetooth Connection step 3 Enter the identity verification interface after the Bluetooth connection is established.
  • Page 97 To set inverter parameters related to grid protection and grid support, contact your dis­ tributor to obtain the advanced account and corresponding password. If the distributor is unable to provide the required information, contact SUNGROW. step 4 If the inverter is not initialized, you will enter the quick setting interface of initializing protection parameter.
  • Page 98 User Manual 7 iSolarCloud App figure 7-4 Initialization Power Company The image shown here is for reference only. Refer to the actual interface for the supported network service providers. table 7-1 Power Company Information Network Service Grid Type Provider AS/NZS 4777.2:2015 AS/NZS 4777.2:2020 Aus­...

  • Page 99: Function Overview

    7 iSolarCloud App User Manual Network Service Grid Type Provider SA Power Networks • TS129-2019: < 10 kW for single-phase & 30 kW for three- phase • TS130-2017: > 30 kW & ≤ 200 kW • TS131-2018: > 200 kW Horizon Power •...
  • Page 100 User Manual 7 iSolarCloud App figure 7-6 Home Page table 7-2 Home Page Description Designation Description Date and time System date and time of the inverter. Present operation state of the inverter. For details, refer to Inverter state table 7-3 Description of Inverter State.

  • Page 101: Run Information

    7 iSolarCloud App User Manual table 7-3 Description of Inverter State State Description After being energized, the inverter tracks the PV arrays’ maximum power point (MPP) and converts the DC power into AC power. This is the normal operation mode. Stop The inverter is stopped.

  • Page 102: Records

    User Manual 7 iSolarCloud App The run information includes the PV information, inverter information, input information, and output information. 7.7   Records Tap Records on the navigation bar to enter the interface showing event records, as shown in the following figure. figure 7-7 Records Fault Alarm Record Tap Fault Alarm Record to enter the interface, as shown in the following figure.
  • Page 103 7 iSolarCloud App User Manual figure 7-8 Fault Alarm Record to select a time segment and view corresponding records. The inverter can record up to 400 latest entries. Select one of the records in the list and tap the record to view the detailed fault information as shown in following figure.
  • Page 104 User Manual 7 iSolarCloud App figure 7-10 Power Curve The App displays power generation records in a variety of forms, including daily power gen­ eration graph, monthly power generation histogram, annual power generation histogram and total power generation histogram. table 7-5 Yield Record Explanation Parameter Description Shows the power output from 5 am to 11 pm in a single day.

  • Page 105: More

    7 iSolarCloud App User Manual 7.8   More Tap More on the navigation bar to enter the corresponding interface, as shown in the following figure. figure 7-11 More 7.8.1 System Parameters Tap Settings > System Parameters to enter the corresponding interface, as shown in the following figure.

  • Page 106: Operation Parameters

    Tap Settings > Operation Parameters > Running Time to enter the corresponding interface. figure 7-13 Running Time PID Parameters The PID function may not be applicable in some areas. Please consult SUNGROW for details. Tap Settings > Operation Parameters > PID Parameters to enter the corresponding inter­...

  • Page 107: Power Regulation Parameters

    7 iSolarCloud App User Manual AFCI Parameters The AFCI function may not be applicable in some areas. Please consult SUNGROW for details. Tap Settings > Operation Parameters > AFCI Parameters to enter the corresponding screen, on which you can set AFCI Parameters.
  • Page 108 User Manual 7 iSolarCloud App figure 7-17 Active Power Regulation table 7-7 Active Power Regulation Definition/Setting Descrip­ Parameter Range tion The switch for enabling/dis­ Active power soft start abling the soft start function af­ Enable/Disable after fault ter a fault occurs. Time that the soft start takes to Active power soft start raise the power from 0 to 100%...
  • Page 109 7 iSolarCloud App User Manual Definition/Setting Descrip­ Parameter Range tion Switch for enabling/disabling Active power setting the function of saving output Enable/Disable persistence limited power. The switch for limiting output Active power limit Enable/Disable power. The ratio of limiting output pow­ Active power limit ratio 0%~110% er to rated power in percentage.
  • Page 110 User Manual 7 iSolarCloud App figure 7-18 Reactive Power Regulation table 7-8 Reactive Power Regulation Definition/Setting Descrip­ Parameter Range tion Reactive power gener­ Switch for enabling/disabling Q Enable/Disable ation at night at night function. Reactive power ratio at Reactive power ratio set for the -100%~0%/ night Q at night function.
  • Page 111 7 iSolarCloud App User Manual Mode Descriptions Q(P) The PF changes with the output power of the inverter. Q(U) The reactive power changes with the grid voltage. “Off” Mode The reactive power regulation function is disabled. The PF is limited to +1.000. “PF”...
  • Page 112 User Manual 7 iSolarCloud App Parameter Explanation Range Voltage percentage for Q(P) function deac­ QP_ExitVoltage 90% ~ 100% tivation Power percentage for Q(P) function deacti­ QP_ExitPower 1% ~ 100% vation Unconditional activation/deactivation QP_EnableMode Yes / No Q(P) function * Curve C is reserved and consistent with Curve A currently. figure 7-19 Q(P) Curve table 7-11 “Q(U)”...

  • Page 113: Communication Parameters

    7 iSolarCloud App User Manual Parameter Explanation Range Grid voltage limit at P4 on the Q(U) mode QU_V4 100% ~ 120% curve QU_Q4 Value of Q/Sn at P4 on the Q(U) mode curve 0 ~ 60% QU_EnterPower Active power for Q(U) function activation 20% ~ 100% QU_ExitPower Active power for Q(U) function deactivation...
  • Page 114 User Manual 7 iSolarCloud App step 1 Enable the "Mobile data" of the mobile device. step 2 Open the App, enter the account and password on the login interface. Tap Login to enter the home interface. step 3 Tap More > Firmware Download to enter corresponding interface on which you can view the device list.

  • Page 115: Grounding Detection

    Contact your distributor to obtain the advanced account and corresponding pass­ word before setting the earth detection parameters. If the distributor is unable to provide the required information, contact SUNGROW. Unauthorized personnel are not allowed to log in with this account. Otherwise, SUN­...

  • Page 116: System Decommissioning

    8   System Decommissioning 8.1   Disconnecting Inverter CAUTION Danger of burns! Even if the inverter is shut down, it may still be hot and cause burns. Wear protective 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 from the AC and DC power sources.

  • Page 117: Disposal Of Inverter

    8 System Decommissioning User Manual • Before dismantling the inverter, disconnect the inverter from both AC and DC power sources. • If there are more than two layers of inverter DC terminals, dismantle the outer DC connectors before dismantling the inner ones. •...
  • Page 118 User Manual 8 System Decommissioning NOTICE Some parts of the inverter may cause environmental pollution. Please dispose of them in accordance with the disposal regulations for electronic waste applicable at the in­ stallation site.

  • Page 119: Troubleshooting And Maintenance

    App or the LCD. Modify the overvoltage protection values with the consent 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 120 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 121 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 re­...
  • Page 122 Alarm 3. Check if the DC fuse is damaged. If so, replace 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 123 If so, replace the damaged ca­ ble and secure terminals to ensure a reliable con­ nection. 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 con­...
  • Page 124 2. Reconnect the communication cable of the me­ Alarm ter. 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 125 635–638, 900, when necessary. 901, 910, 911, 3. If the fault persists, please contact Sungrow Power Customer Service. 1. Check whether the corresponding string is of re­ verse polarity. If so, disconnect the DC switch and adjust the polarity when the string current drops...
  • Page 126 3. It is prohibited to power up the inverter again. Please contact Sungrow Customer Service. 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.

  • Page 127: Maintenance

    9 Troubleshooting and Maintenance User Manual 9.2   Maintenance 9.2.1 Maintenance Notices DANGER Risk of inverter damage or personal injury due to incorrect service! • Be sure to use special insulation tools when perform high-voltage operations. • Before maintenance, disconnect the AC circuit breaker on the grid side and then the DC switch.

  • Page 128: Routine Maintenance

    To avoid the risk of electric shock, do not perform any other maintenance operations beyond this manual. If necessary, contact your distributor first. If the problem per­ sists, contact SUNGROW. Otherwise, the losses caused is not covered by the war­ ranty.

  • Page 129: Cleaning Air Inlet And Outlet

    9 Troubleshooting and Maintenance User Manual Item Method Period Check whether the cable entry is insuf­ ficiently sealed or the gap is excessive­ Cable entry Once a year ly large, and reseal the entry when nec­ essary. Check whether cables are loose or fall off.
  • Page 130 User Manual 9 Troubleshooting and Maintenance step 3 Press the tab of the latch hook, unplug the cable connection joint outwards, and loosen the screw on the fan holder. step 4 Loosen screws on the side of the fan module.
  • Page 131 9 Troubleshooting and Maintenance User Manual step 5 Pull out the fans. Clean them with a soft brush or vacuum cleaner, and replace them when nec­ essary. - - End...

  • Page 132: Appendix

    10   A ppendix 10.1   T echnical Data Parameters SG125CX-P2 SG110CX-P2 SG75CX-P2 Input (DC) Recommended max. 175 kW 154 kW 105 kW PV input power Max. PV input voltage 1100 V Min. PV input voltage / 180 V / 200 V Startup input voltage Rated PV input volt­...
  • Page 133 10 Appendix User Manual Parameters SG125CX-P2 SG110CX-P2 SG75CX-P2 Rated grid frequency 50 Hz / 60 Hz Grid frequency range 45 – 55 Hz / 55 – 65 Hz Harmonic (THD) < 3 % (at rated power) Power factor at rat­...
  • Page 134 User Manual 10 Appendix Parameters SG125CX-P2 SG110CX-P2 SG75CX-P2 Topology Transformerless Degree of protection IP66 Corrosion Night power consump­ ＜ 5 W tion Operating ambient -30 to 60 ℃ temperature range Allowable relative hu­ midity range (non-con­ 0 ~ 100% densing)
  • Page 135 10 Appendix User Manual Parameters SG110CX-P2 （2） 480 A (40 A/40 A/40 A/40 A/40 A/40 Max.DC Short-circuit current A/40 A/40 A/40 A/40 A/40 A/40 A) Output (AC) Max. AC Output power 110 kW Max. AC output apparent power 110 kVA Rated AC output apparent power 110 kVA Max.
  • Page 136 Note(2):For Australia. Note(3):The voltage difference between MPPTs should be less than 80 V. The voltage of the configured string should be higher than the lower limit of the rated MPPT voltage. Parameters SG125CX-P2 （4） Input (DC) Recommended max. PV input...
  • Page 137 10 Appendix User Manual Parameters SG125CX-P2 （4） Max. PV input current 360 A (30 A *12) Max.DC Short-circuit current 480 A (40 A * 12) Max. current for DC connector Output (AC) Max. AC Output power 125 kVA (415 V @ 50 °C) （6）...
  • Page 138 User Manual 10 Appendix Parameters SG125CX-P2 （4） General Data Dimensions (W*H*D) 1020 * 795* 360 mm Mounting Method Wall-mounting bracket Weight 87 kg Topology Transformerless Degree of protection IP66 Corrosion ＜ 5 W Night power consumption Operating ambient temperature -30 to 60 ℃...
  • Page 139 10 Appendix User Manual Parameters SG110CX-P2 SG75CX-P2 Rated PV input volt­ 600 V MPP voltage range 180 ~ 1000 V MPP voltage range 550 V ~ 850 V for rated power No. of independent MPP inputs No. of PV strings per MPPT Max.
  • Page 140 User Manual 10 Appendix Parameters SG110CX-P2 SG75CX-P2 Efficiency Max. efficiency / 98.6% / 98.3% European efficiency Protection Grid monitoring DC reverse  polari­ ty protection AC short circuit pro­ tection Leakage current protection Surge protection DC Type I + II / A C Type II Ground fault moni­...

  • Page 141: Wring Distance Of Di Dry Contact

    10 Appendix User Manual Parameters SG110CX-P2 SG75CX-P2 Cooling method Smart forced air cooling Max. operating alti­ 4000 m (>3000 m derating) tude Display LED, Bluetooth + APP Communication RS485 / WLAN / Optional: Ethernet DC connection type Evo2 (Max. 6 mm²) AC connection type OT / DT terminal (Max.

  • Page 142: Quality Assurance

    300Ω; and when there are multiple inverters connected in the daisy chain, ensure that the impedance is less than 300Ω/number of inverter. 10.3   Q uality 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 143: Contact Information

    10 Appendix User Manual Exclusion of Liability In the following circumstances, SUNGROW has the right to refuse to honor the quality guar­ antee: • The free warranty period for the whole machine/components has expired. • The device is damaged during transport.
  • Page 144 Sungrow Power Supply Co., Ltd. www.sungrowpower.com...

This manual is also suitable for:

Sg110cx-p2Sg75cx-p2

Table of Contents