AccessoryS2-WL-ST
Wi-Fi and LAN data logger stick for inverter monitoring.
- Interface
- Wi-Fi / LAN
GoodWe / Smart metersSmart meterThree-phase smart meter
Three-phase smart meter.CT input for export limiting and load monitoring.
Accessories / Metering
GM330
Three-phase smart meter with CT input
A DIN-rail smart meter that measures consumption and feed-in for GoodWe inverters. Review the specifications and bring your requirements to VOLFAC.
- Accuracy class
- 0.5
- CT ratio
- nA : 5 A
- Housing
- 4 modules
- Weight
- 240 g
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Product overview
Accurate metering for larger currents.
The GM330 measures local consumption and demand with class 0.5 accuracy. It takes external current transformers with a 5 A secondary, which makes it suitable for large currents, and it supports the charge control of hybrid inverters and zero feed-in applications. It communicates over RS485 across up to 1,000 m.
- Accuracy class 0.5Class 0.5 for voltage, current and active energy; class 1 for reactive energy.
- Flexible CT inputCurrent transformers with a ratio of nA : 5 A.
- Three grid typesSupports 1P2W, 3P3W and 3P4W grids from 100 to 472 V.
- RS485 up to 1,000 mRS485 communication over a distance of up to 1,000 m.
Technical specifications
Know the details.
GM330GoodWeModel GM330
Brand GoodWeModel GM330
Measuring range
- Supported grid types
- 1P2W / 3P3W / 3P4W
- Operating voltage
- 3P4W: 100–472 V AC (L-N) · 3P3W: 100–472 V AC (L-L); input up to 1.1 Un
- Frequency
- 50 / 60 Hz
- Current transformer ratio
- nA : 5 A
Accuracy
- Voltage / current
- Class 0.5
- Active energy
- Class 0.5
- Reactive energy
- Class 1
Communication
- Communication method
- RS485
- Communication distance
- 1,000 m
General
- Dimensions (W × H × D)
- 72 × 85 × 72 mm
- Housing
- 4 modules
- Weight
- 240 g
- Mounting
- DIN rail
- User interface
- 4 LEDs, reset button
- Power consumption
- < 5 W
Environment
- Ingress protection
- IP20
- Operating temperature range
- −30 °C to +70 °C
- Storage temperature range
- −30 °C to +70 °C
- Relative humidity (non-condensing)
- 0–95 %
- Max. operating altitude
- 3,000 m
Source: GoodWe product pageGoodWe — Smart Meter product page and the GM330 datasheet (EN, V2.1, 19 January 2026).
Downloads
Product documents.
- Technical datasheetGM330 · English · PDFGM330 · English · PDF
- User manual — smart metersGoodWe smart meters · English · PDFGoodWe smart meters, including GM330 · English · PDF
- EU declaration of conformityGoodWe smart meters · Multilingual · PDFGM330 and other GoodWe meters · Multilingual · PDF
- Safety certificate EN IEC 61010-1GM330 · English · PDFGM330 · English · PDF
- Compatibility list — inverters and IoT productsGoodWe inverters and IoT · English · PDFGoodWe inverters and IoT products, including GM330 · English · PDF
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