Uno Hybrid K Series Single-Phase 3.0–7.5 kW Inverters

TommaTech Uno Hybrid K Series inverters combine PV conversion, battery charging, grid interaction and EPS output in a compact single-phase platform. The 80–480 V battery window makes the family suitable for high-voltage storage architecture, while support for both lithium-ion and lead-acid batteries gives system designers additional flexibility subject to approved compatibility.

Two independent MPPT inputs and a wide 70–550 V MPPT range support practical residential string design. Parallel operation, remote-communication options and an IP65 enclosure make the series suitable for new solar-plus-storage installations as well as professionally designed backup systems.

Key Features

• Five nominal power variants from 3.0 kW to 7.5 kW
• 80–480 V battery operating range
• Lithium-ion and lead-acid battery support
• Two MPPTs with one string per tracker
• 90 V PV start voltage and 600 V maximum PV input voltage
• EPS output with less than 10 ms changeover
• Parallel operation supported
• Up to 97.6% maximum efficiency
• IP65 enclosure
• Natural cooling on 3.0–6.0 kW models; smart cooling on 7.5 kW

Recommended Applications

• Homes and villas with high-voltage batteries
• Small offices and retail units
• Residential backup-power systems
• New single-phase solar-plus-storage installations
• Small AC-coupled energy-storage upgrades

Model Selection Guidance

Select the nominal AC rating from the site's continuous load and grid limit, then verify the regional output caps printed for Uno-Hy-K-5.0 and Uno-Hy-K-7.5. For backup design, check both nominal EPS power and the model-specific peak duration. Confirm the final battery model against the 80–480 V window and required 30 A continuous charge/discharge current.

Essential Shared Specifications

• Nominal AC voltage: 230–240 V; nominal grid frequency: 50/60 Hz.
• Operating temperature: −35°C to +60°C, with derating above 45°C; maximum operating altitude: 3,000 m.
• Communication options: CT / Uno Smart Meter, RS485 external control, optional Wi-Fi or LAN dongle, DRM USB upgrade and NTC.
• Integrated protections include anti-islanding, DC reverse-polarity, insulation, residual-current and AC overcurrent/short-circuit/overvoltage functions; Type II surge protection is stated for DC and AC.
• Safety and EMC references include EN/IEC 62109-1/-2, EN 61000 series, CE, VDE 4105 and EN 50549.

Available Models

Uno-Hy-K-3.0, Uno-Hy-K-3.7, Uno-Hy-K-5.0, Uno-Hy-K-6.0, Uno-Hy-K-7.5