GoodWe GW15K-SDT-30 15 kW Three-Phase Solar Inverter

The GoodWe GW15K-SDT-30 three-phase solar inverter from the SDT G3 series is designed for residential and commercial photovoltaic installations that require high power, efficiency, and easy integration. It delivers a 15 kilowatt rated output power, supports up to 22.5 kilowatts of PV input power, and features 2 independent MPPT trackers to optimize solar panel production.

With a maximum efficiency of 98.5 percent, IP66 outdoor protection, and natural convection cooling, the GoodWe SDT G3 offers efficient and silent operation. Its compact design, wide PV voltage range, and multiple communication options make it easy to integrate into three-phase grid-tied self-consumption solar systems.

GoodWe SDT G3 15 kilowatt three-phase photovoltaic inverter

The GW15K-SDT-30 converts the direct current generated by photovoltaic modules into three-phase alternating current compatible with the power grid.

Its rated output power is 15 kilowatts, while the maximum active AC power reaches 16.5 kilowatts. This capacity makes it possible to take advantage of high-power photovoltaic installations while maintaining a compact format.

Up to 22.5 kilowatts of PV input power

The inverter supports a maximum PV input power of 22.5 kilowatts, equivalent to a DC oversizing ratio of up to 1.5 times its rated power.

This provides greater flexibility when designing the photovoltaic array and allows a module power higher than the inverter’s rated output power to be installed, always respecting the electrical limits established by GoodWe.

2 independent MPPT trackers

The GoodWe GW15K-SDT-30 features 2 maximum power point trackers MPPT, with one PV string per tracker.

The two MPPTs allow two groups of modules to be managed independently, making it easier to install systems with different orientations, tilts, or irradiance conditions.

• Number of MPPT trackers: 2.
• Number of strings per MPPT: 1.
• Maximum input current per MPPT: 22 amps.
• Maximum short-circuit current per MPPT: 27.5 amps.

Ready for high-power photovoltaic modules

The maximum input current of 22 amps per MPPT allows the inverter to be used with modern high-current solar modules, provided that the electrical characteristics of the photovoltaic array remain within the limits set by the manufacturer.

This feature makes it easier to design installations with current-generation photovoltaic panels and helps provide greater flexibility when selecting modules.

Maximum input voltage of 1,100 volts

The inverter supports a maximum input voltage of 1,100 volts and operates with a nominal input voltage of 600 volts.

The operating range of the MPPT trackers is between 140 and 1,000 volts, while the MPPT range for operation at rated power on the 15 kilowatt model is between 480 and 850 volts.

• Maximum input voltage: 1,100 volts.
• Nominal input voltage: 600 volts.
• Start-up voltage: 160 volts.
• MPPT operating range: between 140 and 1,000 volts.
• MPPT range at rated power: between 480 and 850 volts.

15 kilowatt three-phase rated power

On the AC side, the GW15K-SDT-30 provides a 15 kilowatt rated active power and a rated apparent power of 15 kilovolt-amperes.

The maximum active power reaches 16.5 kilowatts, while the rated output current is 21.8 amps and the maximum output current reaches 25 amps.

Compatible with common three-phase grids

The inverter supports the main voltages used in European three-phase grids:

• 220/380 volts.
• 230/400 volts.
• 240/415 volts.

It can be used in 3L/N/PE or 3L/PE configurations depending on grid characteristics and local installation requirements.

The nominal grid frequency can be 50 or 60 hertz.

Maximum efficiency of 98.5 percent

The GoodWe GW15K-SDT-30 achieves a maximum efficiency of 98.5 percent and a European efficiency of 98.2 percent, reducing losses during the conversion of photovoltaic energy into alternating current.

Its topology is transformerless, a common configuration in modern photovoltaic inverters designed to achieve high efficiency and a reduced size.

Natural cooling and silent operation

The 15 kilowatt model uses natural convection cooling, without the need for a fan during normal operation.

GoodWe specifies a noise emission below 30 decibels, making it suitable for residential and commercial environments where low operating noise is desired.

IP66 protection for indoor and outdoor installation

The inverter has an IP66 protection rating, offering a high level of protection against dust and water ingress within the conditions defined by this classification.

In addition, GoodWe specifies a C4 anti-corrosion class, providing resistance in environments with significant exposure to corrosion.

These features allow the inverter to be used in indoor or outdoor installations as long as the manufacturer’s location and mounting requirements are respected.

Wide operating temperature range

The GW15K-SDT-30 is designed to operate in ambient temperatures between -30 and 60 degrees Celsius.

Power derating due to temperature begins at approximately 45 degrees Celsius, depending on actual operating conditions.

• Operating temperature: between -30 and 60 degrees Celsius.
• Storage temperature: between -40 and 70 degrees Celsius.
• Relative humidity: between 0 and 100 percent.
• Maximum operating altitude: 4,000 meters.

Integrated electrical protections

The inverter incorporates different protection systems designed to monitor both the photovoltaic array and the grid connection.

• PV string current monitoring.
• PV insulation resistance detection.
• Residual current monitoring.
• DC reverse polarity protection.
• Anti-islanding protection.
• AC overcurrent protection.
• AC short-circuit protection.
• AC overvoltage protection.
• Integrated DC switch.
• Integrated remote shutdown.

Surge protection

The GoodWe GW15K-SDT-30 includes Type III surge protection on both DC and AC sides as standard.

GoodWe also offers the possibility of configuring the unit with optional Type II surge protection, depending on the version and requested configuration.

Optional AFCI for arc detection

The inverter can optionally include AFCI protection against electric arc faults on the DC side.

When the system detects conditions associated with an electric arc, the inverter can stop operating to help protect the photovoltaic installation.

Optional functions for advanced installations

GoodWe offers different additional options for the SDT G3 series, including:

• AFCI for arc fault detection.
• Rapid shutdown system.
• PID recovery.
• Night-time power supply.

The availability of these functions depends on the specific equipment version and the accessories or configurations selected.

Communication and solar installation monitoring

The inverter includes RS485 communication and supports different communication modules to monitor the operating status of the photovoltaic installation.

Depending on the configuration, it can communicate via Wi-Fi, Ethernet, Bluetooth, or 4G. The specific options depend on the installed communication module.

Compatible protocols include Modbus RTU according to SunSpec and Modbus TCP.

Monitoring via GoodWe apps

The inverter’s connectivity allows operating and production parameters to be checked using compatible GoodWe monitoring tools.

Bluetooth communication enables local configuration, while compatible communication modules facilitate connection to the manufacturer’s monitoring platforms.

Compatible with consumption monitoring

When combined with a compatible GoodWe smart meter, the installation can include additional functions such as 24-hour energy consumption monitoring and certain smart energy management functions.

This integration makes it possible to view not only photovoltaic generation, but also the overall energy behavior of the installation.

Compact 16.6 kilogram design

The GW15K-SDT-30 combines its 15 kilowatt rated power with a relatively compact and lightweight body.

• Width: 491 millimeters.
• Height: 392 millimeters.
• Depth: 210 millimeters.
• Weight: approximately 16.6 kilograms.

These dimensions make the unit easier to transport, handle, and install compared with larger three-phase inverters.

Connectors for the photovoltaic array and the grid

The DC inputs use MC4 connectors for conductors with cross-sections between 4 and 6 square millimeters.

The AC connection uses an OT/DT terminal that supports conductors up to 16 square millimeters for this reference.

Technical specifications of the GoodWe GW15K-SDT-30

• Brand: GoodWe.
• Series: SDT G3.
• Reference: GW15K-SDT-30.
• Product type: grid-tied three-phase photovoltaic inverter.
• Rated output power: 15 kilowatts.
• Maximum active output power: 16.5 kilowatts.
• Rated apparent power: 15 kilovolt-amperes.
• Maximum apparent power: 16.5 kilovolt-amperes.
• Maximum PV input power: 22.5 kilowatts.
• Maximum input voltage: 1,100 volts.
• Nominal input voltage: 600 volts.
• Start-up voltage: 160 volts.
• MPPT operating range: between 140 and 1,000 volts.
• MPPT range at rated power: between 480 and 850 volts.
• Number of MPPT trackers: 2.
• Number of strings per MPPT: 1.
• Maximum input current per MPPT: 22 amps.
• Maximum short-circuit current per MPPT: 27.5 amps.
• Rated output current: 21.8 amps.
• Maximum output current: 25 amps.
• Nominal output voltages: 220/380, 230/400, or 240/415 volts.
• Grid configuration: 3L/N/PE or 3L/PE.
• Nominal frequency: 50 or 60 hertz.
• Power factor: approximately 1, adjustable between 0.8 leading and 0.8 lagging.
• Maximum total harmonic distortion: less than 3 percent.
• Maximum efficiency: 98.5 percent.
• European efficiency: 98.2 percent.
• Protection rating: IP66.
• Anti-corrosion class: C4.
• Electrical protection class: Class I.
• Cooling: natural convection.
• Noise emission: below 30 decibels.
• Topology: transformerless.
• Night-time self-consumption: below 1 watt.
• Operating temperature: between -30 and 60 degrees Celsius.
• Storage temperature: between -40 and 70 degrees Celsius.
• Maximum operating altitude: 4,000 meters.
• Relative humidity: between 0 and 100 percent.
• Communication: RS485 and Wi-Fi, Ethernet, Bluetooth, or 4G options depending on configuration.
• Protocols: Modbus RTU according to SunSpec and Modbus TCP.
• DC switch: integrated.
• Remote shutdown: integrated.
• AFCI: optional.
• Rapid shutdown: optional.
• PID recovery: optional.
• Surge protection: Type III standard, optional Type II on DC and AC sides.
• PV connectors: MC4.
• Width: 491 millimeters.
• Height: 392 millimeters.
• Depth: 210 millimeters.
• Weight: approximately 16.6 kilograms.

Compact three-phase inverter for residential and commercial self-consumption

The GoodWe GW15K-SDT-30 combines 15 kilowatts of rated power, the ability to connect up to 22.5 kilowatts of photovoltaic modules, and 2 MPPT trackers in a compact, silent unit ready for outdoor operation thanks to its IP66 protection.

Its high efficiency, compatibility with high-current solar modules, integrated protections, and monitoring options make the SDT G3 series a particularly suitable solution for residential and commercial three-phase photovoltaic installations seeking to maximize production and benefit from advanced system management.