SolarMax 35S 35kW Three-Phase Photovoltaic Inverter – 400VAC Industrial Grid-Tie Solar Inverter
📘 Product Description
The SolarMax 35S is a three-phase photovoltaic inverter designed for commercial and industrial solar power systems requiring reliable and efficient grid-connected energy conversion. Manufactured by Sputnik Engineering AG, this inverter converts the DC power generated by photovoltaic modules into three-phase AC power for direct connection to the electrical grid.
Featuring a wide MPPT operating range, industrial-grade construction, and an IP54 protection rating, the SolarMax 35S is suitable for demanding photovoltaic installations in commercial buildings, industrial facilities, agricultural sites, and utility-scale applications.
The inverter includes an integrated LCD display for real-time monitoring, system diagnostics, operational status visualization, and configuration management.
⚙️ Technical Specifications
- Manufacturer: Sputnik Engineering AG
- Model: SolarMax 35S
- Inverter Type: Three-Phase Grid-Tie Photovoltaic Inverter
- Rated AC Output Power: 35 kW
- Maximum PV Generator Power: 45 kWp
- AC Output Voltage: 3 × 400 VAC
- Rated AC Output Current: 54 A
- Grid Frequency: 50 Hz
- Maximum DC Input Voltage: 900 VDC
- MPPT Voltage Range: 400 – 800 VDC
- Protection Rating: IP54
- Operating Temperature: -20°C to +60°C
- Application: Commercial and Industrial Grid-Connected Photovoltaic Systems
🔧 Main Features
- High-efficiency DC/AC power conversion
- Three-phase grid-connected operation
- Wide MPPT voltage range
- Integrated LCD monitoring display
- Advanced grid monitoring functions
- Built-in AC and DC protection systems
- Event logging and diagnostic functions
- Industrial-grade design for continuous operation
- Suitable for indoor and protected outdoor installations
🔌 Purpose and Operation
The SolarMax 35S converts the direct current generated by photovoltaic panels into synchronized three-phase alternating current for export to the public utility grid.
The integrated MPPT system continuously tracks the maximum power point of the photovoltaic array, maximizing energy harvest and improving overall system efficiency under varying environmental conditions.
🧩 Role Within the Photovoltaic System
The inverter serves as the central energy conversion unit of the photovoltaic installation.
Its functions include:
- Converting DC solar energy into grid-compliant AC power
- Monitoring photovoltaic array performance
- Managing grid synchronization
- Protecting the system against electrical faults
- Recording operational data and alarms
- Ensuring compliance with grid connection requirements
🛠 Applications
Ideal for:
- Commercial photovoltaic systems
- Industrial solar installations
- Agricultural solar plants
- Manufacturing facilities
- Warehouses and industrial buildings
- Large commercial rooftops
- Three-phase grid-connected PV systems
- Solar power plants up to 45 kWp
🚨 Common Faults and Associated Errors
SolarMax inverters may experience faults such as:
- Grid Fault
- Isolation Fault
- Ground Fault
- Over Voltage DC
- Under Voltage DC
- Over Temperature
- Fan Fault
- Communication Error
- Internal Hardware Error
- AC Frequency Error
- AC Voltage Error
- MPPT Tracking Fault
- Power Stage Fault
- Startup Failure
- Inverter Stop Error
🔍 Typical Symptoms
Grid Connection Problems
Symptoms:
❗ Inverter does not connect to the grid
❗ Repeated startup attempts
❗ Production interruptions
Overtemperature Conditions
Symptoms:
❗ Reduced power output
❗ Thermal derating
❗ Automatic shutdown
Communication Faults
Symptoms:
❗ Missing monitoring data
❗ Communication alarms
❗ Remote monitoring unavailable
Power Stage Issues
Symptoms:
❗ No energy production
❗ Hardware fault alarms
❗ Unexpected shutdowns
✅ Advantages
- Proven SolarMax industrial reliability
- High conversion efficiency
- Wide MPPT operating range
- Robust industrial construction
- Integrated monitoring and diagnostics
- Suitable for demanding commercial installations
- Long service life
- Easy maintenance and troubleshooting
📦 Product Condition
SolarMax 35S photovoltaic inverter complete with original housing and integrated LCD display.
Suitable as:
- Replacement inverter
- Spare unit for maintenance
- Repair and refurbishment projects
- Existing SolarMax system upgrades
- Industrial photovoltaic system servicing
🟢 Summary
The SolarMax 35S is a 35kW three-phase grid-tied photovoltaic inverter designed for commercial and industrial solar installations. Featuring a 400VAC output, 900VDC maximum input voltage, wide MPPT range, and IP54 industrial protection, it provides reliable and efficient solar energy conversion for photovoltaic systems up to 45 kWp. Its integrated monitoring functions, robust construction, and proven SolarMax technology make it an excellent solution for professional solar power applications.
