Goodwe UT Series User Manual
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Goodwe UT Series User Manual

Grid-tied pv inverter
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User Manual
Grid-Tied PV Inverter
UT Series
V1.0-2023-3-20

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Summary of Contents for Goodwe UT Series

  • Page 1 User Manual Grid-Tied PV Inverter UT Series V1.0-2023-3-20...
  • Page 2 Copyright ©GoodWe Technologies Co.,Ltd. 2023. All rights reserved. No part of this manual can be reproduced or transmitted to the public platform in any form or by any means without the prior written authorization of GoodWe Technologies Co.,Ltd. Trademarks and other GOODWE trademarks are trademarks of GoodWe Technologies Co.,Ltd.

  • Page 3: Table Of Contents

    Content User Manual V1.0-2023-03-20 CONTENT 1 About This Manual ..............1 1.1 Applicable Model ..................1 1.2 Target Audience ...................1 1.3 Symbol Definition ..................2 1.4 Updates ......................2 2 Safety Precaution ..............3 2.1 General Safety .....................3 2.2 PV String Safety ...................3 2.3 Inverter Safety .....................4 2.4 Personnel Requirements ................4 2.5 EU Declaration of Conformity ..............5 3 Product Introduction .............6...
  • Page 4 User Manual V1.0-2023-03-20 CONTENT 6 Electrical Connection ............23 6.1 Safety Precaution ..................23 6.2 Connecting the PE cable ................25 6.3 Connecting the PV Input Cable ............... 25 6.4 Connecting the AC Output Cable ............. 29 6.5 Communication Connection ..............32 6.5.1 Connecting RS485 Communication Cable ............

  • Page 5: About This Manual

    All the installers and users have to be familiar with the product features, functions, and safety precautions. This manual is subject to update without notice. For more product details and latest documents, visit https://en.goodwe.com. 1.1 Applicable Model This manual applies to the listed inverters below (UT for short) :...

  • Page 6: Symbol Definition

    01 About This Manual User Manual V1.0-2023-03-20 1.3 Symbol Definition Different levels of warning messages in this manual are defined as follows: DANGER Indicates a high-level hazard that, if not avoided, will result in death or serious injury. WARNING Indicates a medium-level hazard that, if not avoided, could result in death or serious injury. CAUTION Indicates a low-level hazard that, if not avoided, could result in minor or moderate injury.

  • Page 7: Safety Precaution

    • Strictly follow the installation, operation, and configuration instructions in this manual. The manufacturer shall not be liable for equipment damage or personal injury if you do not follow the instructions. For more warranty details, please visit https://en.goodwe.com/ warranty. 2.2 PV String Safety DANGER •...

  • Page 8: Inverter Safety

    02 Safety Precaution User Manual V1.0-2023-03-20 2.3 Inverter Safety WARNING • The voltage and frequency at the connection point meet the inverter grid connection requirements. • Additional protective devices like circuit breakers or fuses are recommended on the AC side. Specification of the protective device should be at least 1.6 times the maximum AC output current.

  • Page 9: Eu Declaration Of Conformity

    User Manual V1.0-2023-03-20 02 Safety Precaution 2.5 EU Declaration of Conformity GoodWe Technologies Co., Ltd. hereby declares that the inverter with wireless communication modules sold in the European market meets the requirements of the following directives: • Radio Equipment Directive 2014/53/EU (RED) •...

  • Page 10: Product Introduction

    3 Product Introduction 3.1 Product Overview The UT Series inverter is a three-phase PV string grid-tied inverter. The inverter converts the DC power generated by the PV module into AC power and feeds it into the utility grid. The intended...

  • Page 11: Features

    User Manual V1.0-2023-03-20 03 Product Introduction 3.3 Features Power derating For a safe operation, the inverter will automatically reduce the output power when the operating environment is not ideal. The following are the factors that may occur power derating. Please try to avoid them when the inverter is working.
  • Page 12 03 Product Introduction User Manual V1.0-2023-03-20 Replace the fan on-grid Disconnect a single inverter from the utility grid and change its fan, which means the power generation of other inverters in the power station will not be influenced. Potential Induced Degradation (PID, optional) When the inverter is connected to the grid, the potential difference between the negative pole of the PV array and the module frame decreases the energy generated by the PV modules.

  • Page 13: Circuit Diagram

    User Manual V1.0-2023-03-20 03 Product Introduction 3.3 Circuit Diagram GW320KH-UT/GW350KH-UT...
  • Page 14 03 Product Introduction User Manual V1.0-2023-03-20 GW320K-UT/GW350K-UT...

  • Page 15: Appearance

    User Manual V1.0-2023-03-20 03 Product Introduction 3.4 Appearance 3.4.1 Parts 17 18 19 20 12 13 14 15 16 22 23 Parts Description Reset the DC switch manually if it is tripped due to the inverter fault. Press the RESET button using the DC switch reset button 1 reset tool and turn the switch from OFF to ON.
  • Page 16 03 Product Introduction User Manual V1.0-2023-03-20 Parts Description DC switch reset button 3 Controls DC switch 7-9. Controls PV input terminal 4-6 (MPPT 4-6) to connect DC switch 4-6 (DC SWITCH 4-6) or disconnect the PV string. Controlled by DC switch 4-6. Used to connect the PV PV input terminal 4-6 (MPPT4-6) strings.

  • Page 17: Dimensions

    User Manual V1.0-2023-03-20 03 Product Introduction 3.4.2 Dimensions 1120mm 368mm 928mm 3.4.3 Indicators Indicator Status Description ON= EQUIPMENT POWER ON OFF= EQUIPMENT POWER OFF ON= THE INVERTER IS FEEDING POWER OFF= THE INVERTER IS NOT FEEDING POWER SINGLE SLOW FLASH= SELF CHECK BEFORE CONNECTING TO THE GRID SINGLE FLASH = CONNECTING TO THE GRID ON= WIRELESS IS CONNECTED/ACTIVE...

  • Page 18: Nameplate

    03 Product Introduction User Manual V1.0-2023-03-20 3.4.4 Nameplate The nameplate is for reference only. GOODWE trademark, product type, Product: Grid-Tied PV Inverter and product model Model : GW***-UT DCmax : *** Vd.c . MPP: *** Vd.c. PV Input DC,max: *** Ad.c. SC PV:*** Ad.c AC, r: 3L/PE~ ***V a.c .

  • Page 19: Check And Storage

    User Manual V1.0-2023-03-20 04 Check and Storage 4 Check and Storage 4.1 Check Before Receiving Check the following items before receiving the product. Check the outer packing box for damage, such as holes, cracks, deformation, and other signs of equipment damage. Do not unpack the package and contact the supplier as soon as possible if any damage is found.

  • Page 20: Storage

    04 Check and Storage User Manual V1.0-2023-03-20 4.3 Storage If the equipment is not to be installed or used immediately, please ensure that the storage environment meets the following requirements: 1. Do not unpack the outer package or throw the desiccant away. 2.

  • Page 21: Installation

    User Manual V1.0-2023-03-20 05 Installation 5 Installation 5.1 Installation Requirements Installation Environment Requirements 1. Do not install the equipment in a place near flammable, explosive, or corrosive materials. 2. Install the equipment on a surface that is solid enough to bear the inverter weight. 3.
  • Page 22 05 Installation User Manual V1.0-2023-03-20 Children no touch ≥600mm ≥50mm ≥600mm ≥600mm 200mm ≥1000mm ≥600mm ALT: 5000m IP66 0%~100%RH Installation Angle Requirements • Install the inverter vertically or at a maximum back tilt of 10 degrees. • Do not install the inverter upside down, forward tilt, backward tilt, or horizontally.
  • Page 23 User Manual V1.0-2023-03-20 05 Installation Installation Space Requirements • Horizontal installation ≥800mm • Triangle installation ≥200mm ≥500mm • Back-to-back installation Do not place anything that will block the heat sink of the two inverters. ≥200mm...

  • Page 24: Inverter Installation

    05 Installation User Manual V1.0-2023-03-20 Installation Tool Requirements The following tools are recommended when installing the equipment. Use other auxiliary tools on site if necessary. M8/M12 Socket wrench Goggles Safety shoes Safety gloves Dust mask DC terminal Diagonal pliers Wire stripper Hammer drill Heat gun crimping tool...

  • Page 25: Installing The Inverter

    User Manual V1.0-2023-03-20 05 Installation 5.2.2 Installing the Inverter Assembling the mounting plate 1.5-2N·m NOTICE • Avoid the water pipes and cables buried in the wall when drilling holes. • Wear goggles and a dust mask to prevent the dust from being inhaled or contacting eyes when drilling holes.
  • Page 26 05 Installation User Manual V1.0-2023-03-20 5.2.3 Installing the Inverter Step 1 Install the handles or hoist rings to the sides of the inverter. Step 2 Grab the handles to lift or hoist the inverter to place it on the mounting plate. Step 3 Tighten the nuts to secure the mounting plate and the inverter.
  • Page 27 User Manual V1.0-2023-03-20 05 Installation Hoisting the Inverter CAUTION Follow the instructions below to avoid personal injury or equipment damage: • Connect the rope and the equipment correctly as the following steps and make sure the ropes are safely connected. •...

  • Page 28: Electrical Connection

    06 Electrical Connection User Manual V1.0-2023-03-20 6 Electrical Connection 6.1 Safety Precaution DANGER • Disconnect the DC switch and the AC breaker of the inverter to power off the inverter before any electrical connections. Do not work with power on. Otherwise, an electric shock may occur.
  • Page 29 User Manual V1.0-2023-03-20 06 Electrical Connection Dimension requirements for the copper to aluminum wiring terminal: 12mm 112mm 48mm Prepare the copper to aluminum wiring terminal reffering to the dimension requirements above. Contact the after-sales service for the copper to aluminum wiring terminal for AC cable with a cross sectional area of 400mm...

  • Page 30: Connecting The Pe Cable

    06 Electrical Connection User Manual V1.0-2023-03-20 6.2 Connecting the PE cable WARNING • The grounding points on the enclosure are preffered. • Make sure that all the grounding points on the enclosure are equipotential connected when there are multiple inverters. •...
  • Page 31 User Manual V1.0-2023-03-20 06 Electrical Connection NOTICE • Multiple PV inputs can be connected to the inverter, each PV input is configured with a Maximum Power Point Tracker (MPPT). • The two input strings per MPPT should be of the same type, the same number of modules, the same tilt and angle to ensure the best efficiency.
  • Page 32 06 Electrical Connection User Manual V1.0-2023-03-20 MC4 PV connector 7~8mm 7~8mm Click Click ≤ 1500V...
  • Page 33 User Manual V1.0-2023-03-20 06 Electrical Connection Vaconn PV connector 7~8mm 7~8mm Click Click ≤ 1500V...

  • Page 34: Connecting The Ac Output Cable

    06 Electrical Connection User Manual V1.0-2023-03-20 6.4 Connecting the AC Output Cable WARNING Do not connect loads between the inverter and the AC breaker directly connected to the inverter. An AC circuit breaker should be installed on the AC side to make sure that the inverter can safely disconnect the grid when an exception happens.
  • Page 35 User Manual V1.0-2023-03-20 06 Electrical Connection Opening the AC wiring box 2.5~3N·m NOTICE Keep the wiring box door open using the attached limit rod during wiring process. Connecting the AC output cable Step 1 Prepare the AC output cable and crimp the OT terminals. Step 2 Cut the rubber seal ring to a proper size.
  • Page 36 06 Electrical Connection User Manual V1.0-2023-03-20 • Single-core copper cable: 14 - 16mm 18 - 20mm 18 - 20mm 22 - 24mm L2=L1+3mm 26 - 28mm 30 - 32mm 26 - 28mm 22 - 24mm 36 - 38mm 26 - 28mm 25~30N·m 7~9N·m NOTICE...

  • Page 37: Communication Connection

    User Manual V1.0-2023-03-20 06 Electrical Connection 6.5 Communication Connection 6.5.1 Connecting RS485 Communication Cable NOTICE • Make sure that the communication device is connected to the right COM port. Route the communication cable far away from any interference source or power cable to prevent the signal from being influenced.
  • Page 38 06 Electrical Connection User Manual V1.0-2023-03-20 COM2 (RS485) RS485 A RS485 B RS485 A RS485 B Grounding Grounding 6.5mm 25mm 0.3~0.4N·m D: 8 - 11mm...

  • Page 39: Connecting Plc Communication Cable

    User Manual V1.0-2023-03-20 06 Electrical Connection 6.5.2 Connecting PLC Communication Cable A PLC communication module is integrated into the inverter to communicate with the smart datalogger or smart communicaiton unit via the AC output cable. Refer to the user manual of the smart datalogger or communication unit for more detailed instructions.

  • Page 40: Installing The Communication Module (Optional)

    Set inverter parameters, check running information and fault information, and observe system status in time via the smartphone or web pages. NOTICE Refer to the delivered communication module user manual to get more introduction to the module. For more detailed information, visit www.en.goodwe.com.

  • Page 41: Equipment Commissioning

    User Manual V1.0-2023-03-20 07 Equipment Commissioning 7 Equipment Commissioning 7.1 Check Before Power ON Check Item The equipment is firmly installed at a clean place that is well-ventilated and easy-to- operate. The PE, DC input, AC output, and communication cables are connected correctly and securely.

  • Page 42: System Commissioning

    08 System Commissioning User Manual V1.0-2023-03-20 8 System Commissioning 8.1 Indicators and Buttons Without LCD With LCD Indicator Status Description ON= EQUIPMENT POWER ON OFF= EQUIPMENT POWER OFF ON= THE INVERTER IS FEEDING POWER OFF= THE INVERTER IS NOT FEEDING POWER SINGLE SLOW FLASH= SELF CHECK BEFORE CONNECTING TO THE GRID SINGLE FLASH = CONNECTING TO THE GRID...

  • Page 43: Setting Inverter Parameters Via Lcd

    User Manual V1.0-2023-03-20 08 System Commissioning 8.2 Setting Inverter Parameters via LCD NOTICE • The screenshots are for reference only. The actual interface may differ. • The name, range, and default value of the parameters are subject to change or adjustment. The actual display prevails.
  • Page 44 08 System Commissioning User Manual V1.0-2023-03-20 LCD Menu Introduction This part describes the menu structure, allowing you to view inverter information and set parameters more conveniently. Normal Pac=xxx W Short press Long press for 2s 202x-xx-xx xx:xx:xx Short press Vpv1~3: 0.0/0.0/0.0V Short press Vpv4~6:...

  • Page 45: Setting Inverter Parameters Via App

    User Manual V1.0-2023-03-20 08 System Commissioning 8.3 Setting Inverter Parameters via App SolarGo App is one smart phone application used to communicate with the inverter via bluetooth, WiFi, 4G or GPRS modules. Commonly used functions are as follows: 1. Check the operating data, software version, alarms, etc. 2.

  • Page 46: Maintenance

    09 Maintenance User Manual V1.0-2023-03-20 9 Maintenance 9.1 Power OFF the Inverter DANGER • Power off the inverter before operations and maintenance. Otherwise, the inverter may be damaged or electric shocks may occur. • Delayed discharge. Wait until the components are discharged after power off. Step 1 Issue a command to the inverter for disconnecting the grid via SolarGo APP Step 2 Turn off the AC breaker between the inverter and the utility grid.

  • Page 47: Troubleshooting

    09 Maintenance User Manual V1.0-2023-03-20 9.4 Troubleshooting Perform troubleshooting according to the following methods. Contact the after-sales service if these methods do not work. Collect the information below before contacting the after-sales service, so that the problems can be solved quickly. 1.
  • Page 48 09 Maintenance User Manual V1.0-2023-03-20 Fault Cause Solutions 1. Temporary abnormality caused by Night DCSPS environmental factors. Fautl 2. Internal components of the inverter are damaged. 1. The relay is abnormal or short-circuited. 2. The control circuit is Disconnect the AC output switch and DC input abnormal.
  • Page 49 09 Maintenance User Manual V1.0-2023-03-20 Fault Cause Solutions 1. The PV string is short-circuited to the 1. Check whether the PV input cables are ground. broken. 2. The PV system is in a 2. Check whether the module frames and the ISO Fail moist environment metal bracket are securely grounded.
  • Page 50 09 Maintenance User Manual V1.0-2023-03-20 Fault Cause Solutions 1. Check whether the working environment of the inverter meets the requirements. For The input insulation example, the fault may be occurred due to resistance value to the Gnd I Fail high humidity in rainy days, . ground decreases when 2.
  • Page 51 09 Maintenance User Manual V1.0-2023-03-20 Fault Cause Solutions 1. The PV module configuration is not PV Over Curr proper. 2. The hardware is Disconnect the AC output switch and DC input damaged. switch, then connect them 5 minutes later. 1. Temporary Contact the dealer or the after-sales service if abnormality caused by the problem persists.
  • Page 52 09 Maintenance User Manual V1.0-2023-03-20 Fault Cause Solutions 1. Temporary abnormality caused by environmental factors. PV HCT Fail 2. Internal components of the inverter are damaged. 1. Temporary abnormality caused by environmental factors. PV Over Curr 2. Internal components of the inverter are damaged.

  • Page 53: Routine Maintenance

    09 Maintenance User Manual V1.0-2023-03-20 9.5 Routine Maintenance DANGER Power off the inverter before operations and maintenance. Otherwise, the inverter may be damaged or electric shocks may occur. Maintaining Item Maintaining Method Maintaining Period Check the heat sink, air intake, and air System Clean Once 6-12 months outlet for foreign matter or dust.

  • Page 54: Technical Parameters

    10 Technical Parameters User Manual V1.0-2023-03-20 10 Technical Parameters Technical Parameters GW320KH- GW350KH- GW320K-UT GW350K-UT Input Max. Input Voltage (V) 1500 1500 1500 1500 MPPT Operating Voltage Range (V) 480~1500 480~1500 480~1500 480~1500 MPPT Voltage Range for Nominal 850~1300 850~1300 850~1300 850~1300 Power...
  • Page 55 User Manual V1.0-2023-03-20 10 Technical Parameters PV Reverse Polarity Protection Integrated Integrated Integrated Integrated DC Surge Arrester Type II Type II Type II Type II AC Surge Arrester Type II Type II Type II Type II AC Overcurrent Protection Integrated Integrated Integrated Integrated...
  • Page 56 Official Website GoodWe Technologies Co.,Ltd. No. 90 Zijin Rd., New District, Suzhou, 215011, China www.goodwe.com service@goodwe.com Local Contacts...

This manual is also suitable for:

Gw320k-utGw320kh-utGw350k-utGw350kh-ut

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