• High Precision Energy Metering: Class 0.5 accuracy for precise calculation of local electricity consumption, demand, and generation.
• Flexible External CT Ratio: Supports indirect measurement via external nA:5A secondary current transformers (200A up to 5000A primary).
• Zero-Export & Charge Control: Enables dynamic export power limitation and charge control for hybrid and grid-tied inverters.
• Ultra-Wide Voltage Window: Operates reliably across 100~472 Vac (L-N / L-L) supporting 1P2W, 3P3W, and 3P4W grid configurations.
• Long-Distance Communication: RS485 Modbus RTU interface supporting reliable data transmission up to 1000 meters.
• Ultra-Low Self-Power Draw: Energy-efficient 4-module DIN-rail design operating with less than 5W internal power consumption.
The GoodWe GM330 Three-Phase Smart Energy Meter (Code: 1002) is a high-precision electricity calculation and load monitoring instrument. It is engineered specifically for commercial, industrial, and large residential solar PV and energy storage systems.
Operating with Class 0.5 accuracy for active energy, this smart meter calculates local power consumption, utility feed-in, and load flows in real time. It features a flexible 5A secondary current transformer (CT) input, accommodating external primary CTs from 200A up to 5000A for high-current industrial installations.
The GoodWe GM330 Three-Phase Smart Energy Meter provides dynamic zero-export control and battery charge management when paired with GoodWe hybrid and grid-tied inverters. Built on a 4-module DIN-rail chassis, it operates across an ultra-wide voltage window of 100~472 Vac.
| Model Name | GoodWe GM330 (Code: 1002) |
| Supported Grid Types | 1P2W / 3P3W / 3P4W |
| Operating Voltage Window | 3P4W: 100 ~ 472 Vac (L-N) / 3P3W: 100 ~ 472 Vac (L-L) |
| Grid Frequency | 50 / 60 Hz |
| Current Transformer Input | External nA:5A Secondary CT (200A to 5000A Primary Range) |
| Voltage & Current Accuracy | Class 0.5 Class |
| Active Energy Accuracy | Class 0.5 Class |
| Reactive Energy Accuracy | Class 1.0 Class |
| Communication Interface | RS485 (Modbus-RTU) |
| Communication Distance | Up to 1000 Meters |
| Power Consumption | < 5 W |
| User Interface | 4x Status LEDs (Power, COM, Import/Export), Reset Button |
| Ingress Protection Rating | IP20 (Indoor Distribution Box Installation) |
| Operating Temperature Range | -30°C to +70°C |
| Max. Operating Altitude | 3000 m |
| Mounting Type & Housing | 35mm Standard DIN Rail / 4 Modules Width |
| Dimensions (W x H x D) | 72 x 85 x 72 mm |
| Net Weight | 240 g |
Contact our technical team prior to installing the GoodWe GM330 Three-Phase Smart Energy Meter. You can also verify system integration guides on the official GoodWe Solar Official Portal.
The GoodWe GM330 Three-Phase Smart Energy Meter delivers accurate load monitoring for solar installations. It measures power parameters across all three phases to ensure efficient grid management.
Featuring a 5A secondary current transformer interface, the GM330 connects to high-capacity external CTs. This allows the smart meter to handle heavy electrical currents and large cable or busbar cross-sections without saturation.
Integrated RS485 Modbus-RTU communication links directly with GoodWe hybrid and on-grid inverters. It transmits instantaneous telemetry over distances up to 1000 meters to enforce zero-export feed-in limits and battery dispatch routines.
Enclosed in a compact IP20 4-module DIN-rail housing, the unit operates across extreme environmental temperatures from -30°C to +70°C. Front-facing LED indicators display power state, communication status, and grid import/export direction at a glance.
Q1: What is the measurement accuracy class of the GoodWe GM330 Smart Meter?
A: The GM330 features Class 0.5 high accuracy for voltage, current, and active energy calculations, and Class 1.0 for reactive energy.
Q2: Does the GM330 include current transformers (CTs) in the box?
A: No, the GM330 utilizes external nA:5A secondary current transformers (CTs) which must be selected according to your system’s primary current requirements.
Q3: What grid types are supported by this smart meter?
A: It supports single-phase two-wire (1P2W), three-phase three-wire (3P3W), and three-phase four-wire (3P4W) grid systems.
Q4: How does the GM330 support zero-export functionality?
A: It monitors real-time grid point power flow and communicates via RS485 with the inverter to dynamically adjust AC output to match household load demand.
Q5: What are the physical dimensions and mounting specifications of the GM330?
A: The meter measures 72 x 85 x 72 mm (4 DIN modules wide), weighs 240 grams, and mounts onto standard 35mm DIN rails.
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