Growatt MAX 300K-X User Manual
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Growatt MAX 300K-X User Manual

Growatt MAX 300K-X User Manual

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MAX 300-350K-X
User Manual

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Summary of Contents for Growatt MAX 300K-X

  • Page 1 MAX 300-350K-X User Manual...
  • Page 2 CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury. CAUTION NOTICE is used to address practices which are not safety relevant. ATTENTION Information that you must read and know to ensure optimal system operation. Information Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 3: Table Of Contents

    9.4 Disposal of the inverter ............................52 10 Product specifications ..............................53 11 Troubleshooting ................................56 11.1 System protect code ............................56 11.2 System error code ..............................56 12 Quality assurance ................................ 59 13 Contact us ..................................60 Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 4: Picture List

    Figure 6.10 Installation steps of the monitoring module ........43 Figure 9.1 Replace the dust filter 1 ............49 Figure 9.2 Replace the dust filter 2 ............50 Figure 9.3 Replace the top dust filter ............50 Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 5 MAX 300-350K-X User's Manual Figure 9.4 Replace the fan 1 ..............50 Figure 9.5 Replace the fan 2 ..............51 Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 6: Purpose

    350K-X series inverter correctly, and can carry out troubleshooting and communication system building. If there is any problem during the installation process, you can log on to the www.growatt.com website to leave a message or call the 24-hour customer service hotline 400-931-3122.
  • Page 7 Damage caused by tools not used in accordance with the manual and tightening the product at the specified torque; • Damage due to your or third party negligence, intentional conduct, gross negligence, improper operation or non-Gurewatt causes. Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 8: Safety Precautions

    Chapter 5. • Please install the inverter in a dry and ventilated position, otherwise it may affect the inverter operation. WARNING • See this manual for the installation steps. Please read them Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 9 • No load access between the inverter and the circuit breaker. • If the cable is thick, do not shake the cable terminal. Make sure WARNING the terminal is well connected before starting the inverter. To Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 10 Areas affected by the sea breeze will vary according to meteorological conditions (e. g., typhoons, seasonal winds) or terrain (such as dikes, hills). Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 11 • When using a forklift to carry the inverter, ensure that the inverter ATTENTION is located in the middle of the fork arm and is secured with a suitable strap to prevent tipping over. Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 12 • When hoisting, it is forbidden to drag the wire rope and hanging gear, and it is forbidden to use hard objects to strike. Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 13: Symbol Conventions

    • Do not clean the fan with an air pump, which may cause fan damage. WARNING 2.2 Symbol conventions symbol description • Used to warn of emergency dangerous situations, if not avoided, will lead to death or serious personal injury. Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 14: Description Of Safety Symbols

    Remind the operator to check the Refer to the manual instructions before operating or installing identification the inverter. This identification interface is direct DC logo current. Communication logo This identification interface is AC. Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 15 WEEE Symbol disposal regulations for electronic waste applicable at the installation site Do not dispose of the system with the WEEE Symbol household waste but in accordance with the local regulations Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 16: Product Introduction

    MAX：Product series name • 300K: Rated power 300kW • 320K: Rated power 320kW ○ Power level • 333K: Rated power 333kW • 350K: Rated power 350kW ○ Electrical architecture X: Platform level Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 17: Appearance

    Description Front Panel Pressure Relief Valve COM interface Corner guard Waterproof silicone pad AuxiliarySwitch Junction Box DC switch 1 Mounting Feet PV terminal AC terminal USB interface Built-in Grounding Point DC switch 2 Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 18: Basic Data

    MAX 300-350K-X User's Manual 3.2 Basic Data Figure 3.1 Visual dimensions Dimension ( mm) Model Weight(kg) Height(H) Width (W) Depth (D) MAX 300-350K-X Inverter 1145 MAX 300-350K-X Inverter with packaging 1285 Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 19: Nameplate

    With inverter circuit change DC power to AC power, and feed power back to grid per grid reuqirement. • With output isolation relay can isolate AC output and grid, if anything goes wrong on either inverter side or grid side, isolation relay can disconnect inverter immediatel. 3.4.1 Circuit Diagram Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 20 Successfully connected to the grid, or the inverter works normally in off-grid Operating mode Shutdown If a fault occurs, the inverter exits the grid connection or off-grid output state 3.4.3 System block diagram The block diagram of the photovoltaic grid-connected system is as follows: Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 21: Grid Type

    The grid type of MAX 300-350K-X series inverter is shown in the figure below： Figure 3.4 Power Grid connection mode diagram 3.6 Functions 3.6.1 LED display The current running state of the inverter can be visually read by the LED display. Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 22 Green light is on RS485, GPRS, etc. Communication Inverter has no external Light is not on indicator light communication Inverter upgrade or USB interface is reading and Green light flashes writing data Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 23 The DC switch is closed and has break protection capability. DC SWITCH1, DC SWITCH2 The DC switch is in automatic split.(The switch is TRIP located between the ON, and the OFF.） Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 24 The percentage of power output of the inverter was set to non-100%. Power grid over-frequency and over-voltage drop load. The input PV voltage value is high. The input PV current value is high. Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 25: Storage, Unpacking, And Handling

    • It is recommended to remove the outer packaging of the products within 24 hours before preparing for installation. Information The diagram of MAX 300-350K-X series inverter is as follows: Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 26 30/30 M10 * 90 Expansion screw AC wiring copper terminal (opt) Note: Although the packaging box of photovoltaic inverter is firm and durable, please take the box gently and properly handle the box. Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 27: Handling Of The Inverter

    2> When handling the inverter, please keep the inverter balance. Note: The front and bottom identification will be given on the packing box. Figure 5.8 Mode of handling the inverter Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 28: Installation

    The elevation of the inverter should be lower than 4000m. When the altitude is higher than 2000m, the inverter will decrease. • The inverter should avoid the sun, rain, snow, etc. It is recommended to install a sunshade on the upper part of the inverter. Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 29 • It is recommended to install vertical or 15°, which is conducive to heat dissipation • Do not reverse the inverter, forward tilt, horizontal placement Figure 5.1 Schematic diagram of the inverter installation Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 30 (d is the distance from the engineering installation parts to the wall). One-word installation When installing multiple inverters, refer to the following graphics to maintain the appropriate gaps: Figure 5.6 Installation distance parameters between inverters Pin glyph installation Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 31: Wall Mount Bracket Installation

    Note: Expansion screws should be installed on a solid cement or brick wall with a wall thickness of at least 100mm. Step 4. Verify the bracket is installed safely Shake the holder by hand and check it for secure mounting. Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 32: Install The Inverter

    2> Hang the inverter on the wall hanger and fix it with bolts. Please keep the inverter balance when hanging. 3> Check whether the inverter is firmly fixed, and lock all the screws. Figure. 5.12 Hoisting Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 33 MAX 300-350K-X User's Manual Figure 5.13 Hang on the wall mount Figure 5.14 Fixed on the wall bracket Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 34: Electrical Connection

    ATTENTION damage caused by sharp edges and burrs. • Buried cables need to be securely fixed using cable supports and cable clamps. Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 35: Prepare The Cables

    Prepared by the Signal cable a twisted-pair cable Cable outer diameter: customer 4mm～11mm Conductor cross-section area: Outdoor copper core Prepared by the PE cable SP ≥ S/2 cable customer Cable outer diameter: / Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 36: Prepare The Ac Circuit Breaker

    • Ensure that the ground cable is firmly connected without causing the risk of electric shock. • Do not use the N wire as a grounding cable to connect to the inverter shell, DANGER Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 37 According to the IEC 61643-32 Guide for the Selection and Use of —— Surge Protectors connected to Photovoltaic Equipment, both household and outdoor photovoltaic power stations need to ensure that the photovoltaic system implements lightning protection measures. Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 38: Connect The Ac Output Cable

    • An AC circuit breaker should be configured outside the AC side to DANGER ensure that the inverter can be safely disconnected from the power grid. • If the rating value of the AC circuit breaker is higher than the Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 39 1> AC terminal on the inverter, R, S, T are three live wire channels. Note: Screw are M12 screws. Figure 6.1 AC Terminal diagram of the inverter 2> Press the terminal Diagram of pressing terminal: Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 40 Figure 6.2. AC output wiring line diagram Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 41: Connect The Dc Input Cable

    PV group string or its modules. Otherwise, it may DANGER lead to an electric shock. • If the inverter is equipped with a protective cover, and the DC input terminal is Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 42 AC / DC short circuit during the operation of the inverter. ATTENTION • Ararc or connector overheating due to inadequate DC connector assembly. • The inverter damage caused by the PV group string connected to multiple inverters along the same road. Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 43 After the positive and negative electrode connectors are stuck in place, the DC input line is fastened without falling off. Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 44 6.2.2 Terminal description The inverter has 30 DC input terminals, of which PV 1 to PV 15 is controlled by DC SWITCH 1, and PV 16 to PV 30 is controlled by DC SWITCH 2. Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 45: Connect The Communication Cable

    25~29, the 25~29 group strings is connected to PV5 / 10 / 15 / 20 / 25 in turn. Figure 6.7 Division map of PV terminal regions 6.3 Connect the communication cable 6.3.1 The COM communication port Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 46 2> Pass the cable into the lock nut, sealing ring and communication terminal components in turn. 3> Connect the RS485 communication line as defined in the above figure. I. Peel off the protective layer and insulation layer of appropriate length and insert it into the terminal; Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 47 3> Make sure the △ is up, insert the monitoring module into the USB port, and tighten the screws. Note: When the operator leaves, please take the monitoring module and data cable away and tighten the waterproof cover to avoid water into the interface. Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 48 MAX 300-350K-X 5 Installation Figure 6.10 Installation steps of the monitoring module Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 49: Debug

    • The DC switch has the function of automatic breaking. If the wiring connection is reverse and the photovoltaic panel configuration is not reasonable, the DC Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 50 If the PV connection indicator is not on, break the "AUX. SWITCH" and contact the technical support engineer. Note: "AUX. SWITCH" only needs to be closed for the first power on and disconnected during subsequent operation. Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 51: Debug The Inverter

    When the DC voltage is> 500V, the inverter will power up and enter the "waiting" state. In this mode, the inverter detects the system parameters. If the system is normal, and the voltage 500V inverter will try to connect to the grid. Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 52 Note: When the DC voltage of the PV group string is too low (500 Vdc), the inverter will enter the shutdown mode. Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 53: System Maintenance

    8.2.1 Clean up the inverter • Please disconnect the AC and DC switches for at least 5 minutes before the capacitance discharge is fully operated. If the inverter is contaminated with dust, Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 54 1> Remove the fan fixing plate screw with a cross screwdriver, as shown below: Figure 9.1 Replace the dust filter 1 2> Remove the dust filter and remove the connecting screw with a cross screwdriver Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 55 1> Remove the fan fixing plate screw with a cross screwdriver, as shown below: Figure 9.4 Replace the fan 1 2> Disconnect the fan connector, then remove the internal screw of the fan fixing plate with a screwdriver, and finally remove the fan, as shown below: Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 56 Use the cross screwdriver to remove the fan that needs to be replaced and replace a new fan; • Arrange the wiring harness and tie the belt to fix it; 5. Reinstall the fan fixing plate and the inverter. Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 57: Shutdown Treatment

    Store the inverter in a dry place with recommended temperatures between-30°C and 60°C. 9.4 Disposal of the inverter It is forbidden to treat the product together with household garbage, but should be treated in accordance with the local applicable disposal regulations of waste electronic equipment Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 58: Product Specifications

    366300VA 352000VA power Nominal AC 800V voltage/range 640-920VAC AC grid 50/60Hz frequency/range 45-55Hz/55-65Hz Max. output current 238A 254A 264A 254A Power factor (under >0.99 rated power) Adjustable power 0.8leading ...0.8lagging factor THDi <3% Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 59 Grid monitoring Anti-islanding protection Residual-current monitoring unit String monitoring Anti-PID function Optional AFCI protection Optional General data Dimensions 1145*790*371mm (W / H / D) Weight 126kg Operating -30℃ - +60℃ temperature range Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 60 Relative humidity 0~100% DC connection H4/MC4(Optional) AC connection OT/DT terminal Display and communication Display LED/WIFI+APP RS485/USB PLC/WIFI/GPRS/ Optional Warranty: 5 / 10 Optional years Note1: With AC power supply, the night loss is <25W. Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 61: Troubleshooting

    1. After shutdown, check the connection of the PV string. DC arc fault has Error 200 2. Restart the inverter. been detected 3. If the error message persists, please contact Growatt support. An excessively high 1. Restart the inverter. Error 201 leakage current has 2.
  • Page 62 Growatt support. PV panels have low 1. Check if the PV strings are properly grounded. Error 203 insulation resistance 2. If the error message persists, please contact Growatt support. Grid voltage is 1. Check the grid voltage. Error 300 beyond the 2.
  • Page 63 User's Manual PWM pass-through 1. Restart the inverter. Error 423 signal failure 2. If the error message persists, please contact Growatt support. 1. Restart the inverter. Error 425 AFCI self-test failed 2. If the error message persists, please contact Growatt support.

  • Page 64: Quality Assurance

    MAX 300-350K-X 5 Installation 12 Quality assurance Please refer to the relevant documents Copyright © Shenzhen Growatt New Energy Co.,Ltd...

  • Page 65: Contact Us

    2> Serial number of the inverter 3> Ermessage code for inverter 4> The LED of the inverter display content 5> Input and output voltage of the inverter 6> Communication mode of the inverter Copyright © Shenzhen Growatt New Energy Co.,Ltd...
  • Page 66 Shenzhen Growatt New Energy Co.,Ltd 4-13/F， Building A， Sino-German (Europe) Industrial Park， Hangcheng Blvd， Bao'an District， Shenzhen， China E： service@growatt.com W： en.growatt.com...

This manual is also suitable for:

Max 320k-xMax 333k-xMax 350k-x

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