Detailed Technical Specifications
- Maximum PV generator power: 8000 Wp
- Maximum PV input voltage: 1000 V
- Start-up voltage: 150 V
- Nominal input voltage: 640 V
- MPPT voltage range: 120 – 980 V
- Number of MPPT trackers / Strings per MPPT: 2 (1/1)
- Maximum input current per string: 16 A / 16 A
- Maximum short-circuit current: 20 A / 20 A
- Rated AC output power: 4000 W
- Rated AC output current (230/400 V): 5.8 A (per phase)
- Maximum apparent output power: 4400 VA
- Maximum AC output current: 6.4 A
- Nominal mains voltage: 220/380 V — 230/400 V (3/N/PE)
- Nominal mains frequency / Frequency range: 50/60 Hz
- Power factor: 0.8 inductive – 0.8 capacitive
- Total harmonic distortion (THDi) at rated power: < 3 %
- Maximum efficiency: 98.3 %
- European efficiency: 97.8%
- Standby power consumption (night): < 3 W
- Protection rating: IP66
- Operating temperature range: -30 °C to +60 °C (derating from 45 °C)
- Maximum operating altitude: 4000 m (derating from 3000 m)
- Relative humidity: 0 – 100 %
- Typical noise emission: < 30 dB
- Storage temperature: -30 °C to +60 °C
- Communication interfaces: USB / RS485 / DRM / Pocket WiFi (optional: LAN / 4G) / Adapter Box (optional)
- Dimensions (Width × Height × Depth): 342 × 434 × 144.5 mm
- Weight: 15.5 kg
- Cooling system: Natural convection
Performance Data and Efficiency Curves
Efficiency and Energy Performance
- Maximum efficiency: 98.3 %
- European efficiency (weighted): 97.8 %
- Integrated global MPP tracking to maximise performance under partial shading conditions
- PV generator oversizing up to 200 per cent of the rated AC power
- AC output overload tolerance of 110 per cent
Operating Limits
- Low start-up voltage: from 150 V DC
- Ultra-wide MPPT range: 120 V – 980 V
- Maximum DC current: 16 A per string, compatible with high-power modules
- Automatic thermal derating above 45 °C and at altitudes of 3,000 m and above
- Operating noise level: < 30 dB — suitable for installation in residential environments
Control and Connectivity
- Integrated zero power export control (zero injection)
- Remote configuration and firmware updates
- 24-hour monitoring and maintenance via the SolaX Cloud platform
- Smart load management — compatible with heat pumps via the Adapter Box
- DRM communication for compliance with grid requirements (AS 4777.2)
Detailed Applications and Use Cases
Three-phase residential photovoltaic installations
- Detached houses with a three-phase connection and simultaneous demand exceeding 3 kW
- Distributed generation with grid feed-in and integrated zero-injection control, without the need for an additional external meter
- Compatible with high-power photovoltaic modules (up to 16 A per string) and standard and oversized module formats
- MPPT range of 120–980 V, allowing the system design to be adapted to different orientations and string configurations
Small commercial premises and the service sector
- Small shops, offices and premises with a low-voltage three-phase supply (230/400 V)
- Self-consumption with surplus energy fed into the grid under the European regulatory framework
- Smart load management — integration with a heat pump via the SolaX Adapter Box for energy optimisation
- Up to 200 per cent oversizing of the PV generator to make the most of the available roof space without changing the inverter
Installations in environments with strict grid requirements
- Markets with demanding grid quality requirements: certified to VDE4105 (Germany), EN 50549, AS 4777.2 (Australia) and IEC 61727
- Reactive power control function (0.8 inductive – 0.8 capacitive) to comply with distribution regulations
- Active monitoring of anti-islanding, residual current (integrated RCD) and DC current injection
- Suitable for installation at altitudes of up to 4,000 m, with automatic derating from 3,000 m
Remote monitoring and management
- Continuous monitoring (24 hours) via the SolaX Cloud platform with an integrated Pocket WiFi module (GRI0850-WIFI) or optional LAN/4G adapter
- Remote firmware updates without the installer needing to be physically present at the site
- RS485 communication for integration with energy management systems (EMS) and third-party data loggers
- USB port for local configuration and retrieval of historical data
Certifications and Full Regulatory Compliance
Safety and Low Voltage
- IEC/EN 62109-1 and -2 — Safety of power converters for photovoltaic power systems
- IEC 61727 — Photovoltaic systems: characteristics of the distribution network connection interface
- IEC 62116 — Anti-islanding protection procedure for grid-connected PV inverters
- IEC 61683 — Efficiency of photovoltaic systems: measurement procedures
- NB/T 32004 — Technical standard for grid-connected photovoltaic inverters
Electromagnetic Compatibility and Grid Connection
- IEC/EN 61000 — Electromagnetic compatibility (EMC): emissions and immunity
- VDE4105 — Connection and operation of power-generating installations in the low-voltage network (Germany)
- EN 50549 — Connection of micro-generating installations and mini-generating installations to the public distribution network (Europe)
- AS 4777.2 — Connection of photovoltaic systems to the distribution network (Australia/New Zealand)
- EN 50530 — Overall performance of grid-connected photovoltaic inverters: measurement of MPPT efficiency
- IEC 60068 — Environmental testing: temperature, humidity and vibration
Integrated Protections
- AC/DC overvoltage and undervoltage protection
- DC isolation and residual current detection (integrated RCD)
- Anti-islanding protection and continuous grid monitoring
- Monitoring of DC current injection into the grid
- DC reverse polarity protection
- Integrated Type III surge protection device (SPD) for DC and AC
- Overtemperature protection with automatic derating
Techno Sun Professional Technical Support
Specialised technical support for professional installers, including advice on string sizing, zero-injection configuration, commissioning and resolution of technical issues in the field.
PERMANENT STOCK
24–48-HOUR DELIVERY
OFFICIAL SOLAX POWER WARRANTY
SolaX Power X3-MIC-4K-G2 — 4000 W Three-Phase Grid-Connected Inverter
Part number: GRI0850-WIFI / GRI0850-SINW | Three-phase string grid-tied inverter
The definitive solution for 4 kW three-phase grid-connected photovoltaic generation in applications requiring maximum efficiency (98.3 per cent), IP66 protection and advanced remote monitoring.
OFFICIAL SOLAX POWER WARRANTY
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