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Growatt MAX 125KTL3-X LV - User Manual

Growatt MAX 125KTL3-X LV
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GR-UM-241-A-01
Shenzhen Growatt New Energy Co., Ltd
4-13/F,Building A,Sino-German(Europe) Industrial Park,
Hangcheng Ave, Bao'an District, Shenzhen, China
T: +86 755 2747 1942
E :service@ginverter.com
W :www.ginverter.com
Installation
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Operation Manual
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Growatt New Energy

Questions and Answers

  • J
    Johnny WilliamsSep 6, 2025
    What should I do if my Growatt MAX 125KTL3-X LV Inverter displays Warning 208?
    • J
      Jamie RiceSep 6, 2025
      If your Growatt Inverter is showing Warning 208, after shutdown, check the fuse. For further assistance, contact Growatt.
  • E
    esellersAug 25, 2025
    What should I do if my Growatt Inverter displays Error 300?
    • K
      Kyle SchmidtAug 25, 2025
      If your Growatt Inverter shows Error 300, check the grid voltage. For further assistance, contact Growatt.
  • P
    Peter JohnstonAug 25, 2025
    What does Warning 401 mean on my Growatt MAX 125KTL3-X LV and how to fix it?
    • C
      christophercombsAug 26, 2025
      If your Growatt Inverter is showing Warning 401, check if the communication between the inverter and the meter is abnormal. For further assistance, contact Growatt.
  • A
    Adam RushSep 14, 2025
    What should I do if my Growatt MAX 125KTL3-X LV displays Error 408?
    • S
      Steven JonesSep 14, 2025
      To address Error 408 on your Growatt Inverter, first restart the inverter. If the issue persists, contact Growatt for support.
  • M
    marcuswalkerSep 23, 2025
    What should I do if my Growatt MAX 125KTL3-X LV displays Error 429?
    • T
      Todd ShepherdSep 23, 2025
      To address Error 429 on your Growatt Inverter, first restart the inverter. If the issue persists, contact Growatt for support.
  • R
    Ralph LoweSep 10, 2025
    What should I do if my Growatt Inverter displays Warning 205?
    • R
      richarddavisSep 10, 2025
      To address Warning 205 on your Growatt Inverter, first restart the inverter. If the issue persists, contact Growatt for support.
  • A
    Ashley RuizSep 1, 2025
    What to do if Growatt MAX 125KTL3-X LV Inverter displays Warning 210?
    • H
      Henry WatkinsSep 2, 2025
      If your Growatt Inverter is showing Warning 210, check PV input terminals. For further assistance, contact Growatt.
  • F
    falvaradoSep 2, 2025
    What does Warning 400 mean on my Growatt MAX 125KTL3-X LV, and how can I fix it?
    • A
      Ariel PittmanSep 2, 2025
      If your Growatt Inverter is displaying Warning 400, after shutdown, check the fan connection. If necessary, replace the fan. For further assistance, contact Growatt.
  • A
    Amy MelendezSep 18, 2025
    What should I do if my Growatt Inverter displays Error 418?
    • R
      Robin NguyenSep 18, 2025
      To address Error 418 on your Growatt Inverter, first restart the inverter. If the issue persists, contact Growatt for support.
  • M
    Michael CarpenterAug 28, 2025
    What to do if Growatt MAX 125KTL3-X LV displays warning301?
    • M
      Michael BowmanAug 28, 2025
      If your Growatt Inverter displays warning301, check that the AC voltage is within the standard voltage range specified. For further assistance, contact Growatt.

Summary

1 Overview

1.1 Product Overview

Provides information for installing Growatt MAX-X Series solar inverters.

1.2 Applicable Personnel

Specifies that only qualified electrical technicians should install the inverter.

2 Safety Precautions

2.1 Safety Overview

Outlines general safety rules and responsibilities during installation.

5 Installation

5.1 Basic Installation Requirements

Outlines essential requirements for installing the inverter safely and correctly.

5.2 Installation Environment Requirements

Specifies environmental conditions needed for optimal inverter performance.

5.4 Wall Mount Bracket Installation

Details the process for installing the wall mount bracket for the inverter.

5.5 Installing The Inverter

Explains how to mount the inverter onto the installed wall bracket.

6 Connecting Cables

6.1 Connection on AC side

Describes how to connect the AC power cable to the inverter.

AC Side Connection Steps

Provides step-by-step instructions for AC side connections.

6.2 Connection On DC Side

Details the procedures for connecting the DC input cables to the inverter.

6.3 Communication Cable Connections

Explains how to connect communication cables for monitoring.

6.4 Connecting The Ground Cables

Explains how to properly ground the inverter and system components.

7 Commissioning

7.1 Commission The Inverter

Guides on initial setup and configuration of the inverter.

7.1.1 Set Inverter Address

Details how to set the communication address for the inverter.

8 Monitoring

8.1 Remote Data Monitoring

Overview of methods for monitoring inverter data remotely.

8.1.1 Mobile Phone APP (ShinePhone) Remote Monitoring

Guides on using the ShinePhone app for remote monitoring.

8.2 Local Data Monitoring

Explains modes for local data monitoring via app or PC.

9 System Maintenance

9.2 Trouble Shooting

Guidance on identifying and resolving issues with the inverter.

Inverter Warnings and Errors

Lists warning and error codes with their descriptions and suggestions.

Inverter Error Codes

Details specific error codes, their causes, and suggested actions.

10 Specification

Growatt MAX 125KTL3-X LV Specifications

General IconGeneral
ModelMAX 125KTL3-X LV
Max. DC Voltage1100 V
Start Voltage200 V
Nominal DC Voltage600 V
MPPT Voltage Range200 V - 1000 V
Number of MPP Trackers3
MPPT Trackers3
Max. Input Current per MPPT30 A
Rated AC Output Power125000 W
Nominal AC Power125000 W
Max. AC Output Power137500 W
Nominal AC Voltage400 V
Rated AC Output Voltage400 V
AC Grid Frequency50/60 Hz
AC Output Frequency50/60 Hz
Power Factor0.8 leading ... 0.8 lagging
THDi<3%
Max Efficiency98.6%
European Efficiency98.3%
DC SwitchYes
Surge ProtectionType II
Protection degreeIP65
Protection ClassClass I
TopologyTransformerless
Max. DC Power150000 W
Max. DC Input Power187500 W
Max. AC Power137500 VA
Operating Temperature Range-25°C to 60°C
CommunicationRS485, Ethernet

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