GOODWE ET 15.0-30.0kW Commercial & Industrial Smart Inverter Solutions Guide

01 Networking

This section details the networking setup for the GoodWe smart inverter system. It includes diagrams illustrating the connection of the inverter, smart meter, battery system, WiFi/LAN dongle, and their integration with a router, server, and SEMS portal.

Key Components:

• Inverter: Models GW15K-ET, GW20K-ET, GW25K-ET, GW29.9K-ET, GW30K-ET. A maximum of 4 inverters can be connected in parallel. Firmware requirements for parallel connections include consistent ARM version (08(401) or above) and DSP version (07(7068) or above).
• Smart Meter: Models GM3000, GM330, GMK330. The GM3000 includes a CT with a ratio of 120A/40mA. The GM330 requires a separate CT with a primary current ranging from 200 to 5000 and a secondary input current of 5A. The GMK330 comes with a CT with a ratio of 20A:40mA or 200A:50mA (Brazil only).
• Smart Dongle: WiFi/LAN Kit-20, Wi-Fi Kit, Ezlink3000. The Ezlink3000 is required for parallel scenarios and must be connected to the master inverter. Its firmware version should be 04 or above.
• Battery System: Models GW60KWH-D-10, GW60KWH-D-10(Extension), GW102.4-BAT-AC-G10, GW112.6-BAT-AC-G10. A maximum of 3 battery systems can be clustered. Specific inverter software versions are required when paired with BATBattery.

Networking Diagram Description: The diagram shows the flow from solar panels to the inverter, smart meter, battery, and then to the switchboard for ON-GRID and BACK-UP loads, connecting to the grid. Communication modules like WiFi/LAN, 4G kits, and Bluetooth are also depicted.

02 Power On/Off

This section outlines the procedure for powering the system on and off, emphasizing the correct sequence for master and slave inverters, battery systems, and associated breakers.

Power On/Off Sequence:

1. Turn on the ON-GRID breaker.
2. Turn on the Battery system breaker.
3. Turn on the DC switch.
4. Turn on the Smart Dongle.
5. Turn on the AC breaker.
6. Turn on the BMS PWR.
7. Turn on the DC BREAKER.

Note: Step 5 (AC breaker) is optional and depends on local laws and regulations.

03 Installations

This section provides step-by-step installation instructions for the Battery, Inverter, and Smart Meter components, including required tools and torque specifications.

Battery Installation

• Steps: Installation, PE connection, Battery connection, COM connection.
• Tools: Crimping tool, M12 torque wrench (50 N·m), M5 torque wrench (4.5 N·m), M6 torque wrench (6 N·m), M8 torque wrench (10 N·m).
• Connections: Includes detailed diagrams for connecting battery terminals (P+, P-, B+, B-) and communication ports.

Inverter Installation

• Steps: Installation, PE connection, PV connection, Battery connection, AC connection, COM connection.
• Tools: M5 torque wrench (4.5 N·m), M5 torque wrench (1.2-2 N·m), M5 torque wrench (2-3 N·m), M6 torque wrench (3-4 N·m), M4 torque wrench (1.5 N·m).
• Connections: Diagrams show connections for PV inputs (MPPT1, MPPT2, MPPT3), battery terminals, AC output, and communication ports (RS485, CAN).

Smart Meter Installation

• Steps: Installation, Cable Connections, Power, Commissioning.
• Tools: Torque wrenches for various connections (e.g., 1.2-2 N·m).
• Connections: Illustrates wiring for GM3000, GM330, GMK330 smart meters, including CT connections and communication modules (Wi-Fi Kit, 4G Kit).
• Commissioning: Uses the SolarGo APP and SEMS Portal for system setup and monitoring.

04 Wiring Diagram

This section provides detailed wiring diagrams for various system configurations, including single and parallel connections of ET 15-30kW inverters with different smart meters (GM3000, GM330, GMK330) and battery systems (Lynx C 60kWh).

Diagrams cover:

• ET 15-30kW (single) + Lynx C 60kWh + GM3000 + WiFi/LAN
• ET 15-30kW (parallel connected) + GM3000 + Ezlink3000
• ET 15-30kW (single) + Lynx C 60kWh + GM330 + WiFi/LAN
• ET 15-30kW (parallel connected) + GM330 + Ezlink3000
• ET 15-30kW (single) + Lynx C 60kWh + GMK330 + WiFi/LAN
• ET 15-30kW (parallel connected) + GMK330 + Ezlink3000

Key connections shown:

• PV inputs (MPPTs)
• Battery connections (BAT+, BAT-)
• AC output to grid and loads
• Smart meter connections (L1, L2, L3, N, PE, CTs)
• Communication ports (RS485, CAN, COM)
• Remote Shutdown / Emergency Stop connections
• SG Ready and RCR/DRED interfaces

Wire specifications are provided for different connections (e.g., Cu, S=6mm², Cu, 4mm²

05 Equipment Commissioning

This section details the process of commissioning the equipment using the GoodWe SolarGo app and SEMS Portal app. It covers network configuration, creating power plants, and setting up various parameters.

Configuring the Network

Users can configure network parameters (WLAN/LAN, IP address, Subnet Mask, Gateway, DNS) via Home > Settings > Communication Setting. DHCP can be enabled or disabled for manual IP configuration.

Creating a Power Plant

Power plants are created and equipment is added using the SEMS Portal app. This involves entering plant information, capacity, and device details. QR codes can be scanned for easier equipment addition.

Quick Settings

The Quick Settings feature in the SolarGo app allows for step-by-step configuration. The installer password is 'goodwe2010'.

Setting the Safety Code

Users can set a safety code and configure voltage protection parameters (OV Stage 1/2/3 Trip Value and Time, UV Stage 1/2 Trip Value and Time) based on local regulations like VDE-AR-N 4110/4120 and VDE-AR-N 4105.

Setting Inverter Quantity

For parallel connections, the number of inverters in the system needs to be set.

Setting the BAT Connect Mode

Users can select the battery connection mode (Stand-alone Connect, Parallel Connect, Only BAT1 Connect, Only BAT2 Connect) and choose the battery model from a list of GoodWe and BYD batteries.

Setting the Working Mode

The inverter can operate in different modes:

• Self-use Mode: Prioritizes solar power for self-consumption, charging the battery with excess, and using battery power at night.
• Peakshaving Mode: Reduces peak power consumption by using battery discharge when load exceeds power quotas.
• BACK-UP Mode: Provides power to critical loads during grid outages, switching to off-grid operation and returning to grid-connected operation when the grid is restored.
• Economic Mode: Optimizes energy costs by setting different time periods for buying and selling electricity based on grid price differences.
• Smart Charging: Allows for charging from the grid during off-peak hours or using excess PV energy that exceeds grid connection limitations.

Depth Of Discharge (On-Grid/Off-grid): Users can set the maximum depth of discharge for the battery in both on-grid and off-grid modes.

Setting Advanced Parameters

This section covers advanced settings such as DRED, Remote Shutdown, RCR/EnWG 14a, and Three-phase Unbalanced Output. Enabling Three-phase Unbalanced Output is recommended when the utility grid company uses phase-separate billing. Backup N-PE Relay Switch settings should comply with local power grid installation regulations.

Setting the Power Limit Function

Users can set an export power limit and configure the external CT ratio for meters like GM330/GM3000C. It is crucial not to set the CT ratio for other GM3000 models to ensure normal operation.