Hoymiles
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What is the Hoymiles collection?
The Hoymiles collection brings together microinverters for 1, 2, 4 or more panels, DTU gateways for Sub-1G/2.4G monitoring, single-phase and three-phase RS485 meters, and accessories (trunk/connector cables, terminations, tools). Its module-based architecture maximizes performance under shading, facilitates troubleshooting, and allows for scalable growth.
Advantages and limitations
- Optimized production per panel and greater tolerance to shading/mixed orientations.
- Comprehensive ecosystem: DTU for cloud, meters for export control, and a wide range of accessories.
- Modular installation and simple maintenance; ideal for future expansions.
- Limitations: higher number of devices on the roof and AC/trunk cabling planning; check input power and open-circuit voltage (Voc) of each PV module.
Applications
- Residential self-consumption with 1–8 panels per string and dynamic export control.
- Commercial/industrial with three-phase microinverters and centralized monitoring.
- Projects with solar panels in various orientations or with partial shading.
How to choose your Hoymiles solution
- No. of panels per microinverter: 1 (HMS-1T series), 2 (HMS-2T), 4 (HMS/HMT-4T), or 8 (MIT, industrial). Adjust nominal power per input to the PV module.
- Input voltage and current: confirm Voc and Isc of the panel under extreme conditions and ensure they do not exceed the microinverter limits.
- Single-phase or three-phase: HMS for 1P, HMT/MIT for 3P in commercial/industrial settings.
- Monitoring: select DTU (WLite-S, Lite-S, W100, Pro-S/4G, etc.) according to the number of devices and connectivity (WiFi/4G/Sub-1G).
- Export control: use smart meter (DDSU666/DTSU666) with the corresponding DTU.
Indicative specifications
| Topologies | Single-phase (HMS) / Three-phase (HMT/MIT) |
| MPPT inputs | 1, 2, 4 or 8 inputs depending on model |
| PV range | Designed for residential/commercial modules (see Voc/Isc of the device) |
| Communications | Sub-1G to DTU; DTU via LAN/Wi-Fi/4G to the cloud |
| Monitoring | Platform with per-panel data, alarms, and diagnostics |
| Accessories | Trunk cables, connectors, terminations, and tools |
Best practices
- Check Voc at minimum temperature and ensure a safety margin relative to the microinverter limit.
- Respect maximum current per input; avoid extreme mismatch between modules connected to the same device.
- Plan the trunk AC route, AC protections, and labeling. Implement DC protections if applicable in module strings towards optimizers/other devices.
- Install a meter at the main panel for export control and real-time consumption data.
- Place the DTU with good coverage; consider 4G in locations without stable Wi-Fi.
Quick comparisons
- HMS (1P): residential; 1–4 inputs per device, fast and scalable installation.
- HMT (3P): commercial; 4–6 inputs and balanced three-phase distribution.
- MIT (3P, high density): industrial; up to 8 inputs per device and centralized management.
- DTU WLite-S / Lite-S / W100 / Pro-S-4G: from 4 up to hundreds of modules, with 4G options.
Accessories and related collections
With Hoymiles you get a modular, scalable, and well-instrumented platform to maximize photovoltaic production, simplify maintenance, and control your installation in detail.
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