Goodwe SMT Series - User Manual

Other manuals for Goodwe SMT Series

Questions and Answers

A
Alexandria PetersonNov 24, 2025
Why is my Goodwe SMT Inverter showing Grid Undervoltage?
- P
  Pamela CopelandNov 24, 2025
  If your Goodwe Inverter is showing a 'Grid Undervoltage' error, it means that the grid voltage is lower than the permissible range, or the duration of low voltage exceeds the requirement of LVRT. If the problem occurs occasionally, it may be a temporary issue with the utility grid, and the inverter will recover automatically once the grid returns to normal. If the problem occurs frequently, check whether the grid voltage is within the permissible range. If the grid voltage consistently falls outside the permissible range, contact your local power company. If the grid frequency is within range, consider modifying the undervoltage protection threshold, LVRT, or disabling the undervoltage protection function after obtaining consent from the local power company. Also, check the AC breaker and ...
A
Angela RodriguezSep 2, 2025
What to do if my Goodwe Inverter shows System Failure?
- J
  Jill HernandezSep 2, 2025
  If your Goodwe Inverter is showing a System Failure, here are a few things you can check: 1. First, disconnect the DC switch and take off the DC connector. Then, check the impedance between PV (+) & PV (-) to earth. 2. If the impedance is less than 100 kΩ, check the insulation of the PV string wiring to the earth. 3. If the impedance is larger than 100 kΩ, check AC wiring after taking off the AC connector and measuring the impedance between neutral and PE. If it is larger than 10 kΩ, check AC wiring.
B
Brittany MolinaAug 26, 2025
Why is my Goodwe Inverter showing Grid Overfrequency?
- K
  kathy55Aug 26, 2025
  If your Goodwe Inverter displays a 'Grid Overfrequency' error, it indicates a utility grid exception where the actual grid frequency exceeds the local grid standard's requirements. If this occurs occasionally, it may be a temporary abnormality in the utility grid, and the inverter should automatically recover once the grid returns to normal. However, if the issue persists, verify that the grid frequency is within the permissible range. If the grid frequency exceeds this range, contact your local power company. If the grid frequency is within the permissible range, consider modifying the overfrequency protection threshold or disabling the overfrequency protection function, but only after obtaining consent from the local power company.
M
Michelle BakerAug 27, 2025
What causes Grid 10min Overvoltage on a Goodwe SMT Inverter?
- P
  Paul ToddAug 27, 2025
  If your Goodwe Inverter shows 'Grid 10min Overvoltage', it means the moving average of the grid voltage over 10 minutes exceeds safety requirements. If this happens occasionally, it might be due to a temporary issue with the utility grid, and the inverter should recover automatically. However, if the problem occurs frequently, check if the grid voltage is within the permissible range. If the grid voltage exceeds the permissible range, contact the local power company. If the grid voltage is within the permissible range, consider modifying the 10min overvoltage protection threshold after getting consent from the local power company.
G
George ButlerAug 27, 2025
Why is my Goodwe SMT showing Grid Underfrequency?
- J
  Justin SinghAug 27, 2025
  If your Goodwe Inverter is showing a 'Grid Underfrequency' error, it indicates a utility grid exception where the actual grid frequency is lower than the local grid standard's requirement. If this occurs occasionally, it may be a temporary abnormality in the utility grid, and the inverter should automatically recover once the grid returns to normal. However, if the issue persists, verify that the grid frequency is within the permissible range. If the grid frequency is outside this range, contact your local power company. If the grid frequency is within the permissible range, consider modifying the underfrequency protection threshold or disabling the underfrequency protection function, but only after obtaining consent from the local power company.
L
Lori PachecoAug 28, 2025
How to fix PV Input Overvoltage on Goodwe Inverter?
- B
  Brandon GutierrezAug 28, 2025
  If your Goodwe Inverter displays 'PV Input Overvoltage', it means the PV array configuration is incorrect, likely because too many PV panels are connected in series in the PV string. Check the serial connection of the PV array. Ensure that the open circuit voltage of the PV string does not exceed the maximum operating voltage of the inverter.
B
Brittany RiveraAug 28, 2025
What to do if Goodwe Inverter shows Low Insulation Res.?
- F
  flindseyAug 29, 2025
  If your Goodwe Inverter displays 'Low Insulation Res.', it indicates that the PV string is short-circuited to PE or the PV system is in a moist environment and the cable is not well insulated to the ground. To address this: 1. Check whether the resistance of the PV string to PE exceeds 50k?. If not, check for the short circuit point. 2. Check whether the PE cable is connected correctly. 3. If the resistance is lower on rainy days, please reset the ISO.
N
nathan76Aug 29, 2025
Why is my Goodwe Inverter showing Cavity Overtemperature?
- M
  Michael AlexanderAug 29, 2025
  If your Goodwe Inverter displays 'Cavity Overtemperature', it could be due to several reasons: 1. The inverter is installed in a place with poor ventilation. 2. The ambient temperature exceeds 60?. 3. A fault has occurred in the internal fan of the inverter. Check the ventilation and ambient temperature at the installation point. If ventilation is poor or the ambient temperature is too high, improve ventilation and heat dissipation.
Z
Zachary RodgersAug 30, 2025
What does Large DC of AC current L1 mean on my Goodwe Inverter?
- K
  Kendra Miller DVMAug 30, 2025
  If your Goodwe Inverter displays 'Large DC of AC current L1', it indicates that the DC component of the output current is exceeding the safety range or the default range. If the issue is due to an external fault like a utility grid or frequency exception, the inverter should recover automatically once the problem is resolved.
A
Amanda Stewart DVMAug 30, 2025
What does Abnormal Ground mean on a Goodwe SMT Inverter?
- C
  crawfordzacharyAug 31, 2025
  If your Goodwe Inverter displays 'Abnormal Ground', it means that the PE cable of the inverter is not connected well, or the L cable and N cable are connected reversely when the output of the PV string is grounded. Check whether the PE cable of the inverter is properly connected and check whether the L cable and N cable are connected reversely if the output of the PV string is grounded.

Goodwe SMT Series Specifications

General

Brand	Goodwe
Model	SMT Series
Category	Inverter
Language	English

Summary

About This Manual

Applicable Models

Lists all supported inverter models and their specifications.

Target Audience

Identifies the intended readers and their required expertise.

Safety Precautions

Symbol Definitions

Explains the meaning of warning and notice symbols used in the manual.

Document Updates

Provides a history of changes and revisions to the manual.

General Safety

Outlines essential safety rules for operating the inverter.

DC Side Safety

Specifies safety measures related to the DC input connections.

Product Introduction

AC Side Safety

Details safety guidelines for AC output connections and protection.

Inverter Installation Safety

Covers safety considerations during the physical installation process.

Personnel Requirements

Defines the qualifications and training needed for personnel.

Application Scenarios

Describes the typical use cases and operational environment for the inverter.

Circuit Diagrams

Illustrates the internal electrical connections for different inverter models.

Supported Grid Types

Lists the various grid connection types the inverter is compatible with.

Inverter Appearance and Parts

Identifies and labels the external components and physical features of the inverter.

Inverter Dimensions

Provides the physical size specifications for different inverter models.

Status Indicators

Explains the meaning of various LED indicators on the inverter.

Nameplate Information

Details the information presented on the inverter's nameplate label.

Check and Storage

Pre-Receiving Inspection

Steps to verify product condition and contents before accepting delivery.

Package Contents (Deliverables)

Lists all items included in the inverter package.

Storage Guidelines

Provides instructions for safely storing the inverter when not in use.

Installation

Installation Site Requirements

Outlines environmental and spatial conditions for proper inverter installation.

Mounting Support Requirements

Specifies criteria for the mounting structure supporting the inverter.

Installation Angle Guidelines

Details the acceptable tilt angles for inverter mounting.

Required Installation Tools

Lists the tools recommended for performing the installation.

Moving the Inverter

Safety precautions and methods for safely transporting the inverter.

Installing the Inverter

Step-by-step instructions for physically attaching the inverter to its mount.

Electrical Connections

Electrical Safety Precautions

Essential safety measures before making any electrical connections.

PE Cable Connection

Procedure for correctly connecting the protective earth (PE) cable.

PV Input Cable Connection

Detailed steps for connecting the DC solar panel input cables.

AC Output Cable Connection

Instructions for connecting the AC power output cable to the grid.

Communication Cable Connection

Guidance on connecting communication cables for monitoring and control.

Ethernet Communication Setup

Configuration of Ethernet communication using the dial switch.

Equipment Commissioning

Pre-Power-On Checks

Checklist of items to verify before energizing the inverter.

Power-On Procedure

Step-by-step guide to safely power on the inverter.

System Commissioning

Status Indicators Explained

Interpretation of the inverter's LED indicators.

LCD Parameter Setup

Instructions for configuring inverter settings via the LCD interface.

User Interface Overview

Explanation of the icons and display elements on the LCD screen.

LCD Navigation and Controls

Details on operating the LCD menu using the keys.

Menu Structure (Level 1)

Overview of the primary menu levels and navigation flow.

System Configuration

Guide to setting up essential system parameters and project settings.

Advanced Settings Access

How to access and the types of advanced settings available.

Historical Data View

Instructions for accessing and viewing historical performance data.

Wi-Fi Reset and Reload

Procedures for resetting and reloading Wi-Fi module settings.

App-Based Parameter Setting

Configuring inverter parameters using the SolarGo mobile application.

SEMS Portal Monitoring

Using the SEMS Portal for remote monitoring and plant management.

Maintenance

Powering Off the Inverter

Safe procedure for disconnecting power to the inverter.

Inverter Removal

Steps for safely detaching and removing the inverter from its installation.

Inverter Disposal

Guidelines for environmentally responsible disposal of the inverter.

Troubleshooting Guide

General advice and steps for diagnosing and resolving common issues.

Fault Diagnosis and Solutions

Detailed troubleshooting for specific fault alarms and error codes.

Earth Fault Alarm Details

Information on earth fault alarms and their behavior.

Routine Maintenance Schedule

Recommended periodic checks and maintenance tasks.

Technical Parameters

DC Input Specifications

Detailed electrical input parameters for various inverter models.

AC Output Specifications

Detailed electrical output parameters for various inverter models.

Inverter Efficiency Ratings

Performance metrics related to the inverter's energy conversion efficiency.

Protection Features

Overview of the built-in safety and protection mechanisms.

General Operating Data

Environmental and operational data like temperature, humidity, and altitude.

Overvoltage Level Definitions

Classification and explanation of different overvoltage categories.

Humidity Level Environmental Ratings

Environmental classifications based on temperature and humidity ranges.

Related product manuals

Goodwe SMT Series - User Manual

Table of Contents

Other manuals for Goodwe SMT Series

Questions and Answers

Goodwe SMT Series Specifications

Summary

About This Manual

Applicable Models

Target Audience

Safety Precautions

Symbol Definitions

Document Updates

General Safety

DC Side Safety

Product Introduction

AC Side Safety

Inverter Installation Safety

Personnel Requirements

Application Scenarios

Circuit Diagrams

Supported Grid Types

Inverter Appearance and Parts

Inverter Dimensions

Status Indicators

Nameplate Information

Check and Storage

Pre-Receiving Inspection

Package Contents (Deliverables)

Storage Guidelines

Installation

Installation Site Requirements

Mounting Support Requirements

Installation Angle Guidelines

Required Installation Tools

Moving the Inverter

Installing the Inverter

Electrical Connections

Electrical Safety Precautions

PE Cable Connection

PV Input Cable Connection

AC Output Cable Connection

Communication Cable Connection

Ethernet Communication Setup

Equipment Commissioning

Pre-Power-On Checks

Power-On Procedure

System Commissioning

Status Indicators Explained

LCD Parameter Setup

User Interface Overview

LCD Navigation and Controls

Menu Structure (Level 1)

System Configuration

Advanced Settings Access

Historical Data View

Wi-Fi Reset and Reload

App-Based Parameter Setting

SEMS Portal Monitoring

Maintenance

Powering Off the Inverter

Inverter Removal

Inverter Disposal

Troubleshooting Guide

Fault Diagnosis and Solutions

Earth Fault Alarm Details

Routine Maintenance Schedule

Technical Parameters

DC Input Specifications

AC Output Specifications

Inverter Efficiency Ratings

Protection Features

General Operating Data

Overvoltage Level Definitions

Humidity Level Environmental Ratings

Related product manuals