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CHNT Power SCA30K-T-EU Installation And Operation Manual

For three-phase grid-tied pv inverter
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Installation and Operation Manual
For Three-Phase Grid-tied PV Inverter
Applicable to
SCA30K-T-EU and SCA36K-T-EU
Shanghai Chint Power System Co., Ltd.
Version: 1.0
Date: January 2025 Document Number: 9.0020.0875A0

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  • Page 1 Installation and Operation Manual For Three-Phase Grid-tied PV Inverter Applicable to SCA30K-T-EU and SCA36K-T-EU Shanghai Chint Power System Co., Ltd. Version: 1.0 Date: January 2025 Document Number: 9.0020.0875A0...

  • Page 2: Table Of Contents

    Preface Table of Contents Preface ........................... 4 IMPORTANT SAFETY INSTRUCTIONS ................ 5 1.1. Warnings and Symbols in This Document ..............5 1.2. Markings on the Product ..................6 1.3. Safety Precautions of Operating the PV Inverter ............7 General Introduction ....................... 8 2.1.
  • Page 3 Preface 5.2. Inverter Commissioning Steps ................33 App Interface and Setting ....................34 6.1. App Download ......................34 6.2. App Quick Connection and Configuration ...............34 6.2.1. Anti-Backflow Parameter Configuration in MatriCloud ........41 Maintenance and Replace .....................44 7.1. Check Electrical Connections .................44 7.2. Clean Radiator ......................44 7.3.

  • Page 4: Preface

    Preface 0. Preface Thank you for choosing a Chint Grid-tied PV Inverter (hereinafter referred to as “PV Inverter” or “Inverter”) developed by Shanghai Chint Power System Co., Ltd. (hereinafter referred to as "CHINT"). IMPORTANT! Please read this manual carefully and make sure that you have understood all the contents thoroughly before you start any operation.

  • Page 5: Important Safety Instructions

    IMPORTANT SAFETY INSTRUCTIONS 1. IMPORTANT SAFETY INSTRUCTIONS (SAVE THESE INSTRUCTIONS) PLEASE READ THIS USER MANUAL CAREFULLY BEFORE THE INSTALLATION AND OPERATION OF THIS PV INVERTER. CHINT RESERVES THE RIGHT TO REFUSE WARRANTY CLAIMS FOR EQUIPMENT DAMAGE IF USERS FAIL TO INSTALL THE EQUIPMENT ACCORDING TO THE INSTRUCTIONS IN THIS MANUAL.

  • Page 6: Markings On The Product

    IMPORTANT SAFETY INSTRUCTIONS 1.2. Markings on the Product Symbols Meanings HIGH VOLTAGE! This equipment works with high voltages. All works on the equipment must only be performed as described in this document. HIGH ENERGY! Risk of electric shock from energy stored in capacitor. Do not remove cover until 10 minutes after disconnecting all sources of supply.

  • Page 7: Safety Precautions Of Operating The Pv Inverter

    IMPORTANT SAFETY INSTRUCTIONS 1.3. Safety Precautions of Operating the PV Inverter DANGER! Before opening the inverter housing for maintenance, you must first disconnect the grid-side AC power supply and PV-side DC power supply, and ensure that the high-voltage energy inside the equipment has been completely released! Generally, you must cut off all connections to the inverter for at least 10 minutes before you can maintain and operate the equipment.

  • Page 8: General Introduction

    2. General Introduction 2.1. Photovoltaic Grid-tied System SCA30K-T-EU and SCA36K-T-EU series inverters are designed for using with grid-tied PV systems. The PV system is generally made up of PV modules, PV inverter and AC power distribution equipment, as shown in Figure 2-1. The solar energy is converted by PV modules to DC power, and then converted by the inverter to AC power with the same frequency and phase as the AC grid.

  • Page 9: Product Dimensions And Appearance

    General Introduction 2.2. Product Dimensions and Appearance NOTICE! SCA30K-T-EU inverter has 3 MPPTs (6 inputs) and no external fans. SCA36K-T-EU inverter has 4 MPPTs (8 inputs) and is equipped with external fans. Apart from these differences, the installation and electrical connection procedures are the same for both models.
  • Page 10 For local control and remote monitoring AC outlet terminal AC cable outlet port Lowering the operating temperature of the Radiator inverter Table 2-2 Main Components of SCA30K-T-EU Figure 2-4 Product Appearances of SCA36K-T-EU Name Function DC Switch Cut off DC power supply safely...

  • Page 11: Led Indicator

    General Introduction 2.3. LED Indicator The LED display on the SCA30K-T-EU and the SCA36K-T-EU inverter is as shown below. Figure 2-5 LED display of the inverter Indicators and their indications are shown below: LED Icon Name Status Indication Normal PV power supply (voltage is high...

  • Page 12: Night Power Supply Function

    This inverter arc detection protection conforms to IEC 63027 standard, arc protection device type is as table 2-5, and the detail explanation is as table 2-6. Inverter Type ARC protection device type SCA30K-T-EU F-I-AFPE-1-4/2-2 SCA36K-T-EU F-I-AFPE-1-4-2 Table 2-5 ARC protection device type...

  • Page 13: Schematic Diagram And Circuit Design

    Relays Filter Filter MPPT3 Inverter Circuit DC SPD Current DC BUS AC SPD (DC/AC) Switch Monitoring Figure 2-6 Schematic Diagram of SCA30K-T-EU Inverter MPPT1 DC EMI AC EMI Filter Relays Filter Filter MPPT4 Inverter Circuit DC SPD Current DC BUS...

  • Page 14: Mechanical Installation

    Mechanical Installation 3. Mechanical Installation 3.1. Storage before Unpacking If the inverter is not immediately installed upon arrival, the following requirements should be met when storing the inverter: Do not remove the outer packaging of the inverter.  Store it in a clean, dry place, and prevent the intrusion of dust and moisture. ...

  • Page 15: Installation Precautions

    Mechanical Installation SCA30K-T-EU: 6 (male) + 6 (female) DC connector SCA36K-T-EU: 8 (male) + 8 (female) AC connector cover Connect AC cables and protect AC terminals Wi-Fi Dongle For communication and monitoring Two for fastening inverter and mounting bracket; M6X16 Screw one for installing external grounding cable.
  • Page 16 Mechanical Installation When installing, if drilling is required, please make sure to avoid the water and electricity  wiring inside the wall. Install the inverter away from flammable and explosive substances.  Salt spray settlement is related to the characteristics of seawater, sea wind, precipitation, ...

  • Page 17: Installation Requirements

    Mechanical Installation 3.4. Installation Requirements 3.4.1. Installation Environment Requirements It is recommended to install inverter under a shelter to avoid direct sunlight, rain and snow accumulation, to prevent from triggering power derating, increasing inverter failures or reducing its service life. Figure 3-2 Installation Environment Recommendations 3.4.2.

  • Page 18: Installation Mode Requirements

    Mechanical Installation 3.4.3. Installation Mode Requirements Figure 3-4 Installation mode requirements (A) If the location permits, install the inverter vertically.  (B) If the inverter cannot be mounted vertically, it may be tilted backward by lower than  15 degrees from the vertical direction. (C) Do not mount the inverter leans forward.

  • Page 19: Installation Procedures

    Mechanical Installation 3.5. Installation Procedures Follow the steps below to install the inverter: 1. Mark the positions of mounting holes on the mounting structure according to the size of mounting bracket. Figure 3-5 Mark positions of mounting holes 2. Drill six holes with a depth of 65 mm with a Ф12 mm drill at the marked position. Knock all the six expansion bolts into mounting holes, remove nuts (E), spring washers (D) and flat washers (C), leaving their tubes (B) and bolts (A) in the wall.
  • Page 20 Mechanical Installation drilling, operators should wear protective goggles and dust masks. 3. Lead the six pairs of nuts (E), spring washers (D), and flat washers (C) through screw holes of mounting brackets and lock them to fasten mounting brackets onto the wall with a torque value of 153 kfg.cm.

  • Page 21: Installation Check

    Mechanical Installation 5. Use two M6X16 screws to fasten the inverter on the mounting bracket. Tools required: No.10 hexagon socket wrench, torque value: 51 kgf.cm. Figure 3-9 Fix inverter on backplane bracket 3.6. Installation Check Ensure slots of the inverter is aligned with hooks of mounting bracket. Ensure the inverter is hung steadily on the mounting bracket.

  • Page 22: Electrical Connection

    Electrical Connection 4. Electrical Connection DANGER! The cables shall be connected in accordance with the National Electrical Code  and all other applicable local codes or jurisdictions. All cable connections must be made while ensuring that the equipment is free ...

  • Page 23: Electrical Cable Connection

    Electrical Connection Wire stripper Making cables Crimping Tool Making cables Table 4-2 Tools Required and Torque Value 4.3. Electrical Cable Connection NOTICE! Pay attention to watertight during construction.  Cables of the same type should be bundled together, and different types of ...
  • Page 24 Electrical Connection Remove an appropriate length of the jacket and insulation layer from the cable. Figure 4-2 Strip AC wire Loosen the locking cap from the connector, route the power cable through the locking cap of the connector and reserve appropriate wiring length. Insert the exposed core wires into the crimp area of the OT terminal and crimp the them using hydraulic pliers.
  • Page 25 Electrical Connection NOTICE! Ground wire, neutral wire and live wires shall be corresponding to PE, N, L1/L2/L3 terminals. If connect them incorrectly, the inverter may work abnormally. After adjusting cable length, insert the connector cover into base slot. Pull the two buckles on the two sides of the terminal base to the lugs on the two sides of the connector cover.

  • Page 26: Dc Wiring

    Electrical Connection NOTICE! The connection of secondary protection ground wire cannot be replaced by that  of PE terminal among the AC connection. Both shall be grounded correctly. CHINT will not bear any responsibility for the possible consequences caused by the omission.
  • Page 27 Electrical Connection NOTICE! It is important to use a multi-meter to check the polarity of the DC input cables to avoid any risk of reverse polarity. Perform cable connection as per the following steps: 1. Remove an appropriate length of the jacket and insulation layer from the DC input cable of PV strings.
  • Page 28 Electrical Connection Figure 4-10 Insert power cables to connectors NOTICE! The connector used for the DC input shall be standard accessory comes with the inverter, or the same model from the same manufacturer. Otherwise, poor contact may occur, affecting normal use. 4.

  • Page 29: Communication Connection

    Electrical Connection Figure 4-12 Bind cables 4.3.3. Communication Connection 4.3.3.1. Connect RS485 Cable Follow the steps below to connect RS485 cable: Strip off RS485 wire by referring to AC cable stripping. Loosen the tightening nut of the RS485 connector by hand. Figure 4-13 Loosen the tightening nut Route a 4-core RS485 communication cable through the tightening nut and adapter sleeve of the RS485 connector.
  • Page 30 Electrical Connection a) For single inverter: lead one 4-core RS485 COM cable through RS485 connector, connect +12V wire to port 1, GND wire to port 2, RS485+ wire to port 3, and RS485- wire to port 4. Figure 4-15 Crimp communication wires b) For multiple inverters: when multiple inverters connect in daisy-chain, lead RS485 COM cables through RS485 connector.

  • Page 31: Install Wi-Fi Dongle

    Electrical Connection Figure 4-18 Insert RS485 connector 4.3.4. Install Wi-Fi Dongle Follow the steps below to install the Wi-Fi dongle: 1. Remove two screws fixed on the communication cover with a No.2 Philips screwdriver to expose the communication interface. 2. Install Wi-Fi Dongle onto the communication interface and fasten the Wi-Fi Dongle firmly with No.2 philps screwdriver, torque value: 10.20 kgf.cm.

  • Page 32: Anti-Backflow For Single Inverter

    Electrical Connection 4.3.5. Anti-Backflow for Single Inverter Note: Anti-Backflow is a standard function of SCA30/60-T-EU Inverter, which can be enabled or disabled based on user requirements. Follow the diagram below to perform the single anti-backflow wiring: Before performing any electrical connections, ensure the meter is intact and all cables are de-energized.

  • Page 33: Inverter Commissiong

    Inverter Commissiong 5. Inverter Commissiong WARNING! Please follow the guidelines below before performing any on-grid operation to  eliminate possible dangers. When the equipment is powered on for the first time, it is imperative that  professionals correctly configure the parameters. Before operating in grid-connected mode, adhere to the following guidelines ...

  • Page 34: App Interface And Setting

    App Interface and Setting 6. App Interface and Setting 6.1. App Download Users can download Matricloud APP of iOS version at Apple store or Android version in Google store or scan the QR code (Support Android 8.0 and iOS 13.0 or later). 6.2.
  • Page 35 App Interface and Setting Click “Device Access” and then "Bluetooth Connect" button to open the device name list. Choose the correct device name and then you will be directed to the Home interface Note: The device name "XXXXXXXX" is the last 8 digits of SN on the communication module label.
  • Page 36 App Interface and Setting Click “Settings” on the main inteface to access the register configuration interface. (If passoword needed, enter “1111”). Figure 6-4 Click “Settings” The register parameters include Input Register Map (Only Read) and Hold Register Map (Read and Write). Note: Register parameters must be modified according to the communication protocol under the guidance of the technical engineer.
  • Page 37 App Interface and Setting ○ Enable/disable control Parameters ○ Control Commands ○ Inverter Basic Information ○ LcdLess Basic Parameters Figure 6-5 Register Parameters Click “Settings -> Inverter Basic Inforamtion” to set the Standard Value, Netural Line 37 / 56...
  • Page 38 App Interface and Setting Setting, PV Input Mode, Rated Voltage inforamtion. Alternatively, you can configure Netural Line Setting and Rated Voltage in the “More” interface (refer to Step 7-8). Figure 6-6 Standard Value Configuration You can enable/disable or configure the following parameters in the “Control Commands” group: Power on/off the device, force restart, recover to fatory defaults, AutoTest(CEI), MPPT scan, ARC detection, ARC clean, PFSetValueRemote, PSetPercentRemote, QSetPercent Remtoe.
  • Page 39 App Interface and Setting More: Click “More” on the navigation bar, you will be directed to the more interface. You can configure basic paraemters, view fault hisgory, view running logs, upgrade firmware, check yield statistics, and configure the gateway. Figure 6-8 Click “More” Click “Basic Settings”...
  • Page 40 App Interface and Setting Additionally, in the Home interface, you can click the “Power on off command” in the top-right corner to power on or power off the inverter. Figure 6-10 Power on and Power off the inverter 10. If a fault occurs, click the red text on the main interface to view the fault details. Follow the troubleshooting list in Chapter 8 Troubuleshooting to resovle the issue.

  • Page 41: Anti-Backflow Parameter Configuration In Matricloud

    App Interface and Setting 6.2.1. Anti-Backflow Parameter Configuration in MatriCloud After completing the anti-backflow wiring as per 4.3.5 Anti-Backflow for Single Inverter, the following configurations need to be set in the MatriCloud App. 1. There are two access points to enable the anti-backflow function: Navigate to “Home”, click “AntiRefluxEn”...
  • Page 42 App Interface and Setting 2. Select meter type: navigate to “Setting > LcdLess Basic Parameter2”, set “MeterType” parameter to “DTSU666”. Figure 6-13 Configure meter type 3. Disable the anti-backflow function: There are two access points to disable the anti- backflow function: Navigate to “Home”, click “AntiRefluxEn”...
  • Page 43 App Interface and Setting 4. After disabling the anti-backflow function, the active power dispatching value must be set to achieve full power output of the inverter: navigate to “Setting > Power dispatching”, and set the “PSet” parameter to 100.0. Figure 6-15 Reset the value of PSet 43 / 56...

  • Page 44: Maintenance And Replace

    Maintenance and Replace 7. Maintenance and Replace WARNING! Before starting any product maintenance, the inverter should be stopped  running, the AC circuit breaker connected to the grid and the PV input on the DC side shall be all disconnected, and then wait at least 10 minutes before starting any operation.

  • Page 45: Troubleshooting

    Troubleshooting 8. Troubleshooting 8.1. LED Indicator Troubleshooting If the LED light indicates any faults, please perform troubleshooting according to the Table 8- LED status Solutions Turn off the external AC breaker. Warnings Switch the DC switch to OFF position. Check the PV input voltage and polarity. Common (restorable) faults Turn off the external AC breaker.
  • Page 46 Troubleshooting poor contact Recommended solutions: Observe for 5 minutes and see whether the alarm will be eliminated automatically. Switch off 3-phase working power supply and then reboot the system. Contact after-sales service personnel. IntFanErr Recommended solutions: Observe for 5 minutes and see whether the alarm will be eliminated automatically.
  • Page 47 Troubleshooting GridV.OutLim Make sure the grid connection is good. Restart the inverter again. If inverter cannot clear fault, replace inverter. Protect0020 Turn off DC switches and external AC breaker. Wait for 1 minute between OFF and ON for all energy to discharge. (Grid relay error) If inverter cannot clear fault, replace inverter.
  • Page 48 Troubleshooting Protect0230 Turn off DC switches and external AC breaker. Wait for 1 minute between OFF and ON for all energy to discharge. (Inverter open- If inverter cannot clear fault, replace inverter. loop self-test fault) Table 8-3 Troubleshooting list of protection faults Fault Codes Solutions Fault 0010~0150...

  • Page 49: Technical Data

    Technical Data 9. Technical Data Model SCA30K-T-EU SCA36K-T-EU DC Input Max. DC Voltage 1100 Vdc MPPT Operating Voltage 200 – 1000 Vdc Range Start Voltage 250 Vdc Rated DC Voltage 615 Vdc Number of MPPT Number of DC Connection Sets per MPPT Max.
  • Page 50 Technical Data Ingress Protection IP66 Cooling Method Cooling Fans Operating Temperature -25°C to +60°C Ambient Humidity 0 – 100% Altitude 4000 m Display and Communication Display LED + APP (Bluetooth) Communication RS485 / Wi-Fi (Standanrd) and 4G (Optional) Mechanical Data Dimensions (W x H x D) 684 x 488 x 269 mm Weight...
  • Page 51 Figure 9-2 AC output voltage de-rating Temperature De-rating: When the installation temperature rises, the inverter output power needs to be de-rated. De- rating needs to be performed according to the figure below: 110% 100% Figure 9-3 SCA30K-T-EU temperature dependency de-rating @PV=615V 51 / 56...
  • Page 52 Technical Data 110% 100% Figure 9-4 SCA36-T-EU temperature dependency de-rating @PV=615V Altitude de-rating: The altitude and output power de-rating details are illustrated in the figure below. Pin/Pn 100% -30%/km 2000 4000 Altitude(m) Figure 9-5 Altitude de-rating 52 / 56...

  • Page 53: Quality Assurance

    Quality Assurance 10. Quality Assurance 10.1. Liability Exemption Exceed the quality assurance period of the product. Cannot provide product serial number or the SN is not clear/complete. Damage during transportation/storage/handling. Misuse, abuse, intentional damage, negligence or accidental damage. Improper commissioning, testing, operation, maintenance or installation performed by customer, including but not limited to: ○...
  • Page 54 Quality Assurance Customer shall present the invoice of the product and date of purchase. At the same time, the trademark on the product should be clearly visible, otherwise we have rights to refuse quality assurance. The unqualified product under replacement should be returned to our company; It is necessary to provide a reasonable time for the company to overhaul the equipment.

  • Page 55: Recycling

    Recycling 11. Recycling The product cannot be disposed of as or together with household wastes. When it is end of service life, please dispose in accordance with the local applicable regulation and standard, to prevent environment pollution, property losses or personal injury. More information, please consult your distributors, installers, or product manufacturer.
  • Page 56 Recycling Shanghai Chint Power System Co., Ltd. Headquarters: No.5999, Guangfulin Road, Songjiang District, Shanghai, 201616, China Switchboard: +86-21-37791222 Fax: +86-21-37791222-866001 Website: www.chintpower.com Service Hotline: +86-21-37791222-866300 Email: service.cps@chint.com 56 / 56...

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