Hoymiles HiFlow 391W Pro LV 120V 1-in-1 series Plugin Microinverter

Hoymiles HiFlow Pro LV 391W Plug-in Solar Microinverter The Hoymiles HiFlow Pro LV 391W (HMS-391-1WM-LV) is a compact, single-panel plug-in solar microinverter designed for balcony, patio, garden, and small residential solar systems. Featuring 391 VA rated AC output, 120V grid compatibility, built-in Wi-Fi and Bluetooth, and 99.8% MPPT efficiency, it provides efficient solar energy conversion with convenient smartphone monitoring. With 95.5% peak conversion efficiency, IP67 outdoor protection, integrated rapid shutdown, and fanless cooling, the HiFlow Pro LV 391W offers a practical solution for compact, grid-connected solar applications. Key Features 391 VA AC Output: Converts solar panel DC electricity into 120V AC power. Solar Panel Compatibility: Supports compatible 300W–510W+ PV modules. Plug-and-Play Design: Simplified connectivity for approved small solar installations. Built-in Wi-Fi & Bluetooth: Monitor solar production through the Hoymiles S-Miles Home App without an external DTU. High Efficiency: 95.5% peak conversion efficiency and 99.8% nominal MPPT efficiency. Outdoor-Ready: IP67 / NEMA 6 protection with quiet, fanless cooling. Integrated Safety: Rapid shutdown and galvanically isolated transformer design. Technical Specifications General Information Brand: Hoymiles Series: HiFlow Pro LV Model: HMS-391-1WM-LV Product Type: Plug-in Solar Microinverter Rated Output: 391 VA Nominal AC Voltage: 120V Grid Frequency: 60 Hz DC Input Recommended PV Module Power: 300–510W+ Maximum DC Input Voltage: 65V MPPT Operating Voltage Range: 16–60V Start-up Voltage: 22V Maximum Input Current: 14A Maximum Short-Circuit Current: 25A MPPT Trackers: 1 PV Inputs per MPPT: 1 AC Output Rated AC Output Power: 391 VA Rated Output Current: 3.26A Nominal Output Voltage: 120V Operating Voltage Range: 90–150V Nominal Frequency: 60 Hz Operating Frequency Range: 55–65 Hz Default Power Factor: >0.99 Adjustable Power Factor: 0.8 Leading to 0.8 Lagging Total Harmonic Distortion (THD): <3% Efficiency & Performance Peak Efficiency: 95.5% Nominal MPPT Efficiency: 99.8% Nighttime Power Consumption: <50 mW Cooling: Natural Convection (Fanless) Communication & Monitoring Wireless Connectivity: 2.4 GHz Wi-Fi and Bluetooth Monitoring Platform: Hoymiles S-Miles Home App External DTU Required: No User Interface: LED Indicator and Mobile App Physical & Environmental Dimensions (W × H × D): 7.17 × 6.46 × 1.18 in (182 × 164 × 30 mm) Weight: 4.0 lbs (1.8 kg) Enclosure Rating: IP67 / NEMA 6 Operating Temperature: -40°F to +149°F (-40°C to +65°C) Cooling Method: Passive, Fanless Connection & Safety AC Connector: Flex-S3 Field Connector Cable Gauge: 14 AWG Plug Type: Type B Transformer: Galvanically Isolated High-Frequency Transformer Rapid Shutdown: Integrated Listed Standards: UL 1741, UL 3700, IEEE 1547 Cybersecurity Standard: ETSI EN 303 645 Applications Balcony Solar Systems: Compact solar generation for residential balconies where permitted. Patio & Terrace Solar: Small outdoor solar installations with compatible PV panels. Garden Solar Systems: Single-panel solar generation for garden spaces. Residential Solar Projects: Small grid-connected solar systems using approved installation methods. Why Choose the Hoymiles HiFlow Pro LV 391W? The Hoymiles HiFlow Pro LV 391W combines efficient solar conversion, smart wireless monitoring, compact construction, and outdoor-ready protection in one plug-in microinverter. It is an ideal choice for compatible small residential solar installations where grid connection is permitted. Shop the Hoymiles HiFlow Pro LV 391W at Self2Solar and build your compact solar power system with confidence. Downloads and Documentation Datasheet Hoymiles HiFlow Pro LV Datasheet Installation Guide Hoymiles HiFlow Pro LV Quick Installation Guide Certification Hoymiles HiFlow UL 3700 Certificate Warranty Hoymiles HiFlow Pro LV Warranty About Hoymiles Hoymiles is a global MLPE (Module Level Power Electronics) solution provider, specializing in module-level inverters and storage systems. With a vision of a clean, sustainable future, we strive to lead the smart energy industry through our rugged technology and reliable products. With our driven engineer team, 1200+ global experts, and distribution & service network spanning North America, South America, Europe, Asia, Africa, and Oceania, Hoymiles has empowered homeowners and professionals in more than 100 countries and regions to join the journey to true open energy.