GoodWe ET Series Hybrid Inverter

Important Information

The information in this quick installation guide is subject to change due to product updates or other reasons. This guide cannot replace the product labels or the safety precautions in the user manual unless otherwise specified. All descriptions here are for guidance only.

All operations should be performed by trained and knowledgeable technicians who are familiar with local standards and safety regulations.

Strictly follow the installation, operation, and configuration instructions in this guide and user manual. The manufacturer shall not be liable for equipment damage or personal injury if you do not follow the instructions.

Components and Mounting

Components List:

• GoodWe ET Series Inverter (GW40K-ET-10 or GW50K-ET-10)
• Mounting hardware (screws, bolts, etc.)
• DC connectors (PV-CZM-61100)
• AC cable glands
• Communication cables
• Other accessories as per package contents.

Mounting Clearances:

Ensure adequate ventilation and access. Recommended clearances:

• Sides: Minimum 200mm
• Bottom: Minimum 500mm
• Top: Minimum 200mm
• Front: Minimum 1000mm (for access and display visibility)

Inverter Weight: Approximately 65kg.

Installation Procedures

1. DC Connections

1.1 MPPT Connection:

Connect DC positive and negative cables from the solar array to the MPPT terminals on the inverter. Use the provided PV-CZM-61100 connectors. Ensure proper polarity (+/-). Recommended cable size: 4-6mm² Cu. Strip length: 7-8mm. Ensure a secure connection (click sound).

1.2 Battery Connection:

Connect DC positive and negative cables from the battery to the BAT terminals on the inverter. Recommended cable size: 25mm² Cu. Strip length: 13-14mm. Use the YQK-70 crimping tool for secure termination. Ensure proper polarity (+/-).

2. AC Connection

Connect the AC input/output cables to the AC terminals (L1, L2, L3, N, PE) on the inverter. Ensure proper cable sizing and stripping:

• AC L1/L2/L3: 75mm cable length.
• AC N/PE: 105mm cable length.
• Recommended cable size: 20-25mm² Cu.

Torque specifications:

• PE terminal: M4 screw, 0.8 N-m
• L1, L2, L3, N terminals: M8 screws, 6-8 N-m
• PE terminal (alternative): M4 screw, 1.2 N-m

3. Communication Connections

3.1 Parallel Operation:

For systems with multiple inverters, connect them in parallel using the COM1 ports. Use CAN_L, CAN_H, RS485_A1, RS485_B1 terminals for inter-inverter communication. Configure DIP switches (S1, SW2, S4) on each inverter to set master/slave roles. For example, a master inverter might be set to ON-ON-ON, while slave inverters are OFF-OFF-OFF. Refer to the full manual for detailed DIP switch configurations.

3.2 External Device Connections:

Connect external devices via COM2 ports:

• BMS (Battery Management System): Connect via CAN or RS485.
• Meter: Connect via RS485.
• EMS (Energy Management System): Connect via RS485.
• DRED (Demand Response): Connect via DI terminals (DI1-DI4) and DRM ports (DRM0-DRM8).

4. Commissioning and Monitoring

After installation, the inverter needs to be commissioned. Monitoring and control can be managed through:

• SolarGo APP: Mobile application for setup and monitoring.
• SEMS Portal APP/WEB: Cloud-based platform for remote monitoring and management.

5. Power On/Off Sequence

Follow the correct sequence for powering the system:

• Power On: 1 → 2 → 3 → 4 → 5
• Power Off: 5 → 4 → 3 → 2 → 1

Note: The numbers correspond to specific connection points or breakers as indicated in detailed diagrams not fully reproducible here. Always refer to the official user manual for precise sequences.

Commercial Smart Inverter Solutions

This guide is applicable to GoodWe ET Series Inverters used in commercial applications, such as the ET 40-50kW series combined with battery solutions like Lynx C.