Description
GoodWe GM330 measures consumption and demand for hybrid charge control and export limiting through external nA:5A current transformers. Its Class 0.5 metering and RS485 connection help define the meter point; this sale unit is the meter alone, and the CTs are selected and ordered separately.
GoodWe GM330
External nA:5A CT input: the transformers are matched to the measured conductors.
Class 0.5 for voltage, current and active energy; Class 1 for reactive energy.
RS485 up to 1000 m; four DIN modules, IP20 and 240 g.
Class 0.5 measurement for control
The GM330 datasheet lists Class 0.5 for voltage, current and active energy, Class 1 for reactive energy. Its consumption and demand data serve hybrid-inverter charge control and export limiting.
RS485 across the planned meter run
Communication is RS485, over a distance of up to 1000 m. The planned cable run and the inverter interface set the meter configuration.
Four DIN modules in the cabinet
The exact GM330 table lists 72 × 85 × 72 mm, 240 g, four modules, DIN-rail mounting and IP20. Its operating temperature range is -30 to +70 °C.
A clear CT choice for the meter point
GM330 takes external nA:5A current transformers. The user manual lists CT ×0 in the standard deliverables table, and this Linker sale unit follows it: the meter without CTs, so the transformers can be matched to the measured conductors.
Technical data
GM330 · external CT meter point
- Compatible CT ratio
- nA:5A
- Active-energy accuracy
- Class 0.5
- DIN modules
- 4
About these specifications
Class 0.5 control measurement with a separate CT decision.
GM330 measures through nA:5A CT input and communicates over RS485. Accuracy is Class 0.5 for voltage, current and active energy; the CTs are selected separately for the measured conductors.
Measurement
- Grid
- Three-phase, 3P3W / 3P4W
- Connection
- External nA:5A CT input
- Nominal voltage (Vac)
- 220/230 L-N · 380/400 L-L
- Input voltage
- up to 1.1 Un
- Frequency (Hz)
- 50 / 60
- Current transformer ratio
- nA:5 A
- Accuracy, voltage / current
- Class 0.5
- Accuracy, active energy
- Class 0.5
- Accuracy, reactive energy
- Class 1
Communication
- Method
- RS485
- Distance (m)
- 1000
Physical
- Ingress protection
- IP20
- Operating temperature (°C)
- -30 ~ +70
- Dimensions (W × H × D, mm)
- 72 × 85 × 72
- Housing
- 4 modules
- Mounting
- DIN rail
- Weight (g)
- 240
- Power consumption (W)
- ≤ 5
- User interface
- 4 LED, reset button
- Certification
- IEC 61010-1:2010+A1 / EN 61010-1:2010+A1; EU declaration (2022-11-30): EMC 2014/30/EU, LVD 2014/35/EU, RoHS 2011/65/EU and (EU) 2015/863
Project fit
Where this model fits.
Scenarios that show which projects the GoodWe GM330 belongs in, and the limits behind our engineers' recommendation.
CT-based measurement for hybrid charge control
An installer needs a separate meter point, with its current transformers, for a hybrid-inverter control or export-limiting design.
GM330 accepts nA:5A current transformers and communicates by RS485. It measures three-phase grids, wired 3P3W or 3P4W, at a nominal 220/230 V L-N and 380/400 V L-L.
- Grid wiring, CT ratio and the RS485 run complete the measurement point; the nA:5A CTs are sized to the measured conductors and ordered with the meter.