Goodwe GW5K-DNS-G40

The GoodWe GW5K-DNS-G40 is a single-phase grid-tied inverter from the DNS‑G4 series designed for small to medium residential systems. With an AC rated power of 5kVA and two independent MPP trackers, it is suitable for more complex roof layouts and high-performance module configurations. The high permissible DC input current of 20A per MPPT supports modern high-power modules and allows PV oversizing up to 200%, improving utilization of inverter capacity throughout the day. A maximum DC voltage of 600V and a wide MPP voltage range of approximately 40–560V simplify string design. The high efficiency of up to 98.1%, together with integrated protection and monitoring functions, ensures stable and standards-compliant operation.

• TechnologyThe inverter operates with a transformerless topology and uses two independent MPP trackers, each with one string input. This enables efficient operation of different module fields or roof orientations without mutual interference. The high DC input current per MPPT is particularly relevant for modules with high short-circuit current and reduces design restrictions. The high European efficiency of around 97.4% minimizes conversion losses in real-world operation. Active protection functions such as AFCI for arc fault detection increase operational safety in the event of DC faults.
  
  Electrical design
  • Two MPPTs with 20A each allow flexible string configuration even with high-current modules
  • MPP voltage range of approx. 40 to 560V supports short and long strings
  • PV oversizing up to 200% for better power utilization at partial load
  • Maximum efficiency of around 98.1% reduces thermal losses
• ConnectivityThe GW5K‑DNS‑G40 offers multiple integrated communication interfaces for monitoring and system integration. RS485 as well as wireless and wired network interfaces are available as standard, allowing the inverter to be integrated into local or central monitoring systems. Supported protocols such as Modbus and SunSpec enable connection to higher-level energy management or visualization solutions. The devices support optional smart dongles, allowing the functional scope to be expanded with additional communication paths or parallel operation.
  
  Monitoring & interfaces
  • RS485 for stable, wired communication in multi-inverter systems
  • Wi‑Fi, LAN, Bluetooth and optional 4G for flexible connectivity depending on location
  • Support for Modbus and SunSpec for EMS integration
  • Expandable via EzLink3000 smart dongle without a separate data logger
• WarrantyThe GoodWe GW5K‑DNS‑G40 comes with a standard manufacturer’s warranty of 10years. This covers material and workmanship defects under the intended operating environment and is designed for grid-connected use in accordance with specifications. For planners and operators, this provides predictable operational security over a long period, particularly within the typical lifecycle of residential PV systems. The warranty complements the device’s integrated protection functions and reduces project risk.
• SustainabilityThe inverter’s high efficiency directly contributes to improved energy yield and thus to better use of resources. The possibility of PV oversizing enables more efficient use of available module area without the need for additional hardware. Low self-consumption power and passive cooling via natural convection reduce energy demand and avoid wear-prone fans. The compact enclosure and low weight of around 9.2kg reduce transport and installation effort.
  
  Operation and efficiency
  • High European efficiency minimizes losses over annual operation
  • Passive cooling without fans reduces maintenance requirements and self-consumption
  • Support for high PV power improves utilization of available area
  • Compact design reduces material and logistics effort
• QualityThe device is designed with a robust IP66-rated enclosure, making it suitable for permanent indoor and outdoor use. Dust-tight construction and protection against powerful water jets allow flexible mounting locations. Extensive integrated protection mechanisms such as residual current monitoring, insulation monitoring, anti-islanding, and AC and DC surge protection increase operational safety and support standards-compliant installations. The very low noise emission of under 25dB also allows installation close to living areas.
  
  Protection & workmanship
  • IP66 enclosure for reliable outdoor operation
  • Integrated DC and AC surge protection devices typeII
  • AFCI for active detection of DC arc faults
  • Very low noise generation under typical load
• ExpandabilityThe GW5K‑DNS‑G40 is designed for modular system expansion. Via optional smart dongles, multiple devices can be operated in parallel or combined with other GoodWe inverters, allowing system performance and configuration to be flexibly adapted. This is particularly relevant for later expansions of residential PV systems. Standardized communication protocols also facilitate integration into existing monitoring or energy management systems without additional gateways.
  
  System integration
  • Parallel connection of multiple devices possible via EzLink dongle
  • Can be combined with additional inverters of the same series
  • Easy integration into existing monitoring infrastructures
  • Suitable for step-by-step capacity expansion in existing systems