GoodWe MS Series (7-10kW) G4 Grid-Tied PV Inverter

About This Manual

This manual provides essential information regarding the product, including installation, electrical connection, commissioning, troubleshooting, and maintenance. It is crucial for installers and users to familiarize themselves with the product's features, functions, and safety precautions before operation. This document is subject to updates without prior notice. For more detailed product information and the latest documentation, please visit https://en.goodwe.com/.

Applicable Models: The manual applies to the following GoodWe inverters:

Target Audience: This manual is intended for trained and knowledgeable technical professionals who are familiar with the product, local standards, and electrical systems.

Safety Precautions

General Safety: Inverters are designed and tested in compliance with relevant safety rules. Always follow all safety instructions and cautions before operating the equipment. Improper operation can lead to personal injury or property damage.

• Read the user manual thoroughly before installation.
• All installations must be performed by trained and knowledgeable technicians familiar with local standards and safety regulations.
• Use insulating tools and wear appropriate personal protective equipment (PPE) during operation.
• Unauthorized disassembly or modification may damage the device and void the warranty.
• Follow all installation, operation, and configuration instructions provided in this manual.
• For warranty details, visit https://www.goodwe.com/warrantyrelated.html.

DC Side Safety:

• Ensure PV module frames and bracket systems are securely grounded.
• Connect DC cables tightly and correctly to prevent poor contacts or high impedances.
• Measure DC cable voltage with a multimeter to avoid reverse polarity connection and ensure it is within the maximum DC input voltage limit.
• Do not connect the same PV string to multiple inverters.
• PV modules used must have an IEC61730 class A rating.

AC Side Safety:

• Ensure voltage and frequency at the connection point meet inverter grid connection requirements.
• Additional protective devices like circuit breakers or fuses are recommended on the AC side. Their specification should be at least 1.25 times the maximum output current.
• Ensure all groundings are tightly connected.
• Use copper cables for AC output. If using aluminum cables, use copper-to-aluminum adapter terminals.

Inverter Installation Safety:

• Do not apply mechanical load to terminals to prevent damage.
• Ensure all labels and warning marks are visible after installation.
• Connect inverter cables using the provided PV connectors.

Symbol Definitions:

• DANGER: High voltage hazard. Disconnect all power before working.
• WARNING: Potential risks exist. Wear proper PPE.
• CAUTION: High-temperature hazard. Do not touch the product during operation.
• NOTICE: Read the user manual before working on the device.
• Grounding point
• CE Mark
• RCM Mark
• Do not dispose of as household waste.

Product Introduction

The MS inverter is a single-phase PV string grid-tied inverter that converts DC power from PV modules into AC power for the utility grid. The intended use is illustrated in the diagram.

Model Description:

Example: GW10K-MS-CN-G40

EU Declaration of Conformity

GoodWe Technologies Co., Ltd. declares that the inverters sold in the European market comply with relevant directives. For specific directives related to inverters with and without wireless communication, refer to the detailed sections in the manual. The EU Declaration of Conformity can be downloaded from the official website: https://en.goodwe.com/.

Personnel Requirements

NOTICE: Personnel involved in installation or maintenance must be strictly trained and knowledgeable about safety precautions and correct operations. Only qualified professionals or trained personnel are permitted to install, operate, maintain, and replace the equipment or its parts.