GoodWe SDT G3 8–15 kW

Three-phase grid-tied PV inverter

Five SDT G3 8–15 kW variants share a communication-terminal layout. The manual separates the inverter and logger RS485 pairs from the grid-meter pair. Confirm the installed variant, firmware, communications accessory and authorised point map before an external read; no Edge control path is established.

GoodWe SDT G3 8–15 kW three-phase PV inverter
  • RS485
  • Modbus RTU
  • Modbus TCP

Three-phase grid-tied PV inverter

Compatibility

Direct Edge integration not yet verified

GoodWe lists RS485, Modbus RTU and Modbus TCP for this model group. Its manual identifies distinct RS485 B1/A1 inverter-network and B2/A2 meter terminals. The retained sources do not establish a firmware-matched external point map, TCP stick capability, read permission or safe write contract for an installed unit.

Identify the exact -30 or -EU30 nameplate, country grid profile, firmware and fitted GoodWe communications stick or collector. Obtain its current authorised register or API contract and confirm which physical port serves it. Keep export limiting, RCR/DRM, grid settings and VPP dispatch with the commissioned control owner.

Models

Download
ModelsInterfaceRoute into Edge
GW8000-SDT-308 kW nominal AC, two MPPTs and one string per MPPT in the V2.1 sheetUse the Model d communication-terminal drawing only after checking the installed revision; verify the external data owner separately.
GW10K-SDT-30 and GW10K-SDT-EU30Both are 10 kW nominal AC, but the EU30's listed maximum active power is 10 kW versus 11 kW for the -30Do not collapse the regional EU30 variant into the -30 when sizing or applying a grid profile.
GW12K-SDT-30 and GW15K-SDT-3012 and 15 kW nominal AC; two MPPTs, one string per MPPTCheck nameplate and national certificates before selecting the inverter or a communications accessory.
GW17K/20K/25K/30K SDT G3, LV, AU and BR variantsOther ratings and market versions outside this 8–15 kW guideThe broader product page and manual cover different current, string, cooling and terminal configurations; do not transfer this guide's variant assumptions.

Specifications

The March 2026 sheet identifies the covered five codes in the 4–30 kW two-MPPT range. Each has 1100 V maximum DC input, 140–1000 V MPPT operating range, IP66 enclosure and nominal 220/380, 230/400 or 240/415 V three-phase output, subject to local grid standards.2

Covered models
GW8000-SDT-30; GW10K-SDT-30; GW10K-SDT-EU30; GW12K-SDT-30; GW15K-SDT-3023
Nominal AC power
8, 10, 10, 12 or 15 kW respectively2
PV tracking
Two MPPTs, one string per MPPT for the covered models2
Inverter-network RS485
Manual Model d: B1/A1 on terminals 1/2 and 3/4, for a logger or inverter network3
Meter RS485
Manual Model d: B2/A2 on terminals 5/6, for the export-control meter3
Published protocols
Modbus RTU (SunSpec compliant) and Modbus TCP; endpoint and map need installed-version verification2
Enclosure and cooling
IP66; natural convection in this 8–15 kW subset2

Interface

Documented measurements and integration boundaries for SDT G3 8–15 kW.

  • The V2.4 manual groups all five covered models as Model d. Its RS485 B1/A1 terminals 1–4 connect inverter networks or a GoodWe data logger. Its separate meter B2/A2 terminals 5–6 support the meter and CT export-control arrangement. Trace the existing plant before connecting another client.
  • The manual describes GoodWe collector options: EzLogger Pro or SEC1000 up to 20 inverters per COM port, EzLogger 3000C or SEC3000 up to 25. These are GoodWe bus design limits, not proven Edge polling capacity. The manual reserves SEC3000C for GW50K-SDT-C30, outside this group.
  • GoodWe advertises Modbus RTU and TCP, while communication hardware can be RS485, Wi-Fi/LAN with Bluetooth or optional 4G with Bluetooth. A fitted Wi-Fi/LAN stick does not prove that the particular firmware exposes an unrestricted Modbus TCP server or writes.
  • For export limiting or 24-hour consumption monitoring, the manual requires a correctly placed grid-point CT and meter. Inverter AC power alone cannot measure net import or export; verify CT direction, phase mapping and sign at the connection point.
  • RCR inputs may serve grid dispatch requirements in Germany and remote shutdown is integrated, but the manual says those functions are disabled by default and require commissioning. A physical input is not an authorisation for third-party software dispatch.

Assessment

The five named -30/-EU30 models only; GoodWe's broader SDT G3, LV, AU and BR portfolio is excluded.

InteroperabilityLimited
GoodWe publishes Model d RS485 network and meter terminal roles plus Modbus RTU/TCP labels, but an installed external read contract is not retained.23
AccuracyNot yet assessed
Point units, scaling, timestamp and freshness need the matching register/API guide and a live meter comparison.3
SecurityNot yet assessed
Read-only access and network controls depend on the selected GoodWe collector or stick and firmware.3
ReliabilityNot yet assessed
External polling cadence, stale data and reconnect behaviour remain to be qualified.3
RuggednessSupported with conditions
IP66 and -30 to +60 °C are published, subject to siting, sealing and temperature derating.2
ScalabilityLimited
The manual gives 20 or 25 inverters per GoodWe collector COM port by collector type, but this is not an Edge fleet limit.3
LifecycleSupported with conditions
GoodWe currently publishes a March 2026 variant sheet and V2.4 manual; retain the installed country and accessory revision before integration.23

Setup

  1. Match the exact nameplate

    Record the whole model suffix, country approval, inverter firmware and grid profile. The EU30 and ordinary 10 kW -30 have different published maximum AC output.

  2. Trace the GoodWe communication topology

    Identify any EzLogger, SEC controller, Ezlink3000 or Wi-Fi/LAN stick. On the installed terminal drawing, distinguish B1/A1 inverter-network terminals from the B2/A2 meter pair before planning a data connection.

  3. Document the grid-point measurement

    Record the meter, CT ratio, CT arrow, three phase mapping and physical point of connection. Compare GoodWe's load and export readings against an independent meter before treating them as site flexibility data.

  4. Obtain the installed interface contract

    Ask for the applicable firmware and accessory-specific GoodWe register/API guide, read permissions, transport, address convention, units, scaling, timestamps and polling limit. Test one bounded read with the commissioning owner.

  5. Keep controls separate

    Document who owns export limitation, RCR, remote shutdown and any VPP dispatch. Do not write setpoints or alter grid settings on the basis of a protocol label or this selection guide.

Common questions

Does the Wi-Fi/LAN stick give Edge a direct Modbus TCP connection?
The datasheet lists Modbus TCP and optional communication hardware, but the retained documents do not prove the service, access rights or point map of a particular stick and firmware. Verify those details with GoodWe and the site owner before a read.23
Can inverter output represent site export or VPP capacity?
No. The manual's export-limit topology uses a meter and correctly oriented CTs near the grid connection point. Establish net site power, loads, controllability and dispatch permission separately.3
Is the GW10K-SDT-EU30 identical to GW10K-SDT-30?
Both are rated 10 kW nominal, but the V2.1 sheet lists 10 kW maximum AC active power for the EU30 and 11 kW for the -30. Use the exact suffix for sizing and local approval.2

Sources

  1. GoodWe SDT G3 Series 4–30 kW product page and exact model list (opens in a new tab) GoodWe
  2. SDT G3 Series 4–30 kW datasheet, 20260317-EN-V2.1 (opens in a new tab) GoodWe
  3. SDT G3 Series user manual, V2.4, 25 March 2026 (opens in a new tab) GoodWe

Further reading

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