Hoymiles HMS-400W-1T WiFi Microinverter Module Inverter

The Hoymiles HMS-400W-1T micro inverter has been specially developed for mini solar systems on open spaces such as balconies. With an output power of 400W, it is suitable for solar power production in the range of 320 to 540+ watts. As with all other micro inverters from Hoymiles, it is suitable for long operating hours and a wide range of PV module applications, as its start-up voltage is very low (min. 22V) and the DC input range of the operating voltage (16-60V) is extremely wide.

The integrated WiFi module enables convenient real-time system monitoring via direct connection or remote control via the S-Miles Cloud platform.

The HMS-400W-1T:

• Integrated WiFi module
• Plug-and-play design for balcony solar systems
• Increased safety through quick shutdown and isolated transformer
• 1-in-1 design for versatile installation scenarios
• Output power adjustment function to customize performance
• Two options for monitoring and management: direct connection and S-Miles Cloud
• Minimization of the effects of shading, dust, or aging through MPPT
• High-quality energy generation with high MPPT accuracy
• Peak efficiency of 96.7%
• 12-year product warranty—information on warranty conditions can be found here
• Complies with VDE-AR-N 4105: 2018

Integrated WiFi

The HMS-400W-1T inverter from Hoymiles features an integrated industrial-grade Wi-Fi module, which ensures high reliability. This integrated Wi-Fi allows the inverter to be monitored without additional accessories. Users can either use a direct connection for real-time monitoring or control the inverter remotely using the S-Miles Cloud platform. This enables convenient and efficient system monitoring for optimal performance of the mini solar system.

Simple installation

PV systems with Hoymiles microinverters are very easy to plan. Each microinverter can be quickly mounted on the PV mounting rack or directly under the PV module. The solar module is connected directly to the microinverter on site, eliminating the risk of people being exposed to dangerously high DC voltage.

Optimal reliability

Microinverter systems are inherently more reliable than conventional inverters. The decentralized design of a microinverter system ensures that a fault will not cause the entire PV system to fail. Hoymiles microinverters are designed to operate at full power at ambient temperatures of up to +65°C (150°F). The microinverter housing is designed for outdoor installation and complies with protection class IP67.

S-Miles account creation

The S-Miles account can be created directly by the end user. The instructions from Hoymiles can be found in the download area of this article.

Technical data

• Recommended module power: up to 320W - 540+W
• Number of MPPT's: 1
• MPPT voltage range: 16-60V
• Start voltage: min. 22V / max. 60V
• Maximum input voltage: 65V
• Maximum input current: 14A
• Maximum input short-circuit current: 25A
• Rated output power: 400VA
• Rated output current: 1.74A
• Rated output voltage/range: 230V / 180-275V
• CEC peak efficiency: 96.70%
• Ambient temperature range: -40 - +65°C
• Storage temperature range: -40°C - +85°C
• Dimensions (WxHxD): 182 x 164 x 30 mm
• Weight: 1.75 kg
• Housing rating: IP67 (exterior)

Scope of delivery:

1x Hoymiles HMS-400W-1T micro inverter