Description
GoodWe GMK330 is a three-phase smart meter for hybrid charge control and export limiting. This Linker sale unit includes the meter and three 120 A:40 mA CTs; it communicates over RS485.
GoodWe GMK330
Three 120 A:40 mA CTs included in this sale unit.
Class 0.5 for voltage, current and active energy; Class 1 for reactive energy.
RS485 up to 1000 m; four DIN modules, 72 × 85 × 72 mm and IP20.
One meter point for control
GMK330 records consumption and demand for hybrid-inverter charge control and export limiting. Its voltage, current and active-energy accuracy is Class 0.5; reactive energy is Class 1.
Grid types and voltage reference
The meter supports 1P2W, 3P3W and 3P4W grid types. The operating voltage is 90–264 V L-N for 3P4W and 90–264 V L-L for 3P3W, so the voltage reference (L-N or L-L) depends on the grid type.
RS485 in a four-module housing
The meter has RS485 up to 1000 m, a four-module DIN-rail housing, 72 × 85 × 72 mm, 240 g, IP20 and a -30 to +70 °C operating range.
Three specified CTs with this GMK330
This Linker sale unit includes the GMK330 meter and three 120 A:40 mA CTs. The standard GMK330 set has three CTs, and the GMK330 datasheet gives this ratio.
Technical data
GMK330 · three specified CTs
- Included 120 A:40 mA CTs
- 3
- Active-energy accuracy
- Class 0.5
- Meter communication
- RS485
About these specifications
Control metering with a defined CT set.
This Linker GMK330 sale unit includes three 120 A:40 mA CTs. The meter measures voltage, current and active energy to Class 0.5 and communicates over RS485 at the control meter point.
Measurement
- Supported grid types
- 1P2W / 3P3W / 3P4W
- Connection
- Three CTs supplied at 120 A:40 mA
- Number of current transformers
- 3
- Operating voltage, 3P4W
- 90 ~ 264 V AC (L-N)
- Operating voltage, 3P3W
- 90 ~ 264 V AC (L-L)
- Frequency
- 50 / 60 Hz
- Current transformer ratio
- 120 A:40 mA (three CTs in this Linker sale unit)
- Accuracy, voltage / current
- Class 0.5
- Accuracy, active energy
- Class 0.5
- Accuracy, reactive energy
- Class 1
Communication
- Method
- RS485
- Distance
- 1000 m
Physical
- Ingress protection
- IP20
- Operating temperature
- -30 ~ +70 °C
- Dimensions (W × H × D)
- 72 × 85 × 72 mm
- Housing
- 4 modules
- Mounting
- DIN rail
- Weight
- 240 g
- Power consumption
- < 5 W
- User interface
- 4 LED, reset button
Project fit
Where this model fits.
Scenarios that show which projects the GoodWe GMK330 belongs in, and the limits behind our engineers' recommendation.
Control metering with a defined CT set
An installer is specifying a meter point for hybrid charge control or export limiting and needs the CT ratio to match the supplied meter package.
This Linker GMK330 unit includes three 120 A:40 mA CTs. The meter communicates over RS485 up to 1000 m. For 3P4W the operating voltage is 90–264 V L-N; for 3P3W it is 90–264 V L-L.
- The measurement point depends on correct grid wiring, CT placement and the RS485 cable route.
Documents
Product questions
Which CT version is included in this GMK330 order?
The GMK330 ships with 3 current transformers. The datasheet lists 120A CTs included, and the current transformer ratio is 120A:40mA; the previous 200A:50mA version is phased out after June 2026.