Deye SG01HP3-EU-BM4 50 kW three-phase hybrid inverter – The benchmark for large-scale solar installations

The Deye SUN-50K-SG01HP3-EU-BM4 is a 50 kW three-phase hybrid inverter designed for professional photovoltaic projects requiring performance, reliability and scalability. Its dual high-voltage battery input, 4 independent MPPT trackers and UPS switchover in under 4 ms make it a strategic choice for industrial buildings, agricultural operations, commercial premises and installations with optimised self-consumption.

4 independent MPPT trackers for maximised output

The inverter features 4 independent MPPT trackers, each accepting 2 strings and an input current of 36A. The MPPT voltage range extends from 150 to 850 Vdc, with a maximum PV voltage of 1,000 Vdc. The maximum PV power accepted is 80,000 Wp, offering a wide margin of overcapacity to compensate for partial shading or multiple orientations. MPPT efficiency exceeds 99%, ensuring optimal extraction of the energy produced.

Dual high-voltage battery inputs 160–800 Vdc

The SG01HP3-EU-BM4 features two independent battery inputs, each supporting up to 50A on charge and 50A on discharge, totalling 100A. The battery voltage range of 160 to 800 Vdc ensures broad compatibility with the main high-voltage lithium-ion battery technologies on the market. BMS communication is self-adaptive via CAN or RS-485, without the need for complex manual configuration. This dual input also allows two separate battery banks to be connected, providing redundancy or increased storage capacity without additional equipment.

UPS mode: switchover in less than 4 ms

In the event of a mains power failure, the Deye 50 kW switches to stand-alone mode in under 4 ms, making it suitable for powering sensitive loads: servers, industrial controllers, medical equipment or control systems. This switchover time is one of the shortest in its class, comparable to dedicated UPS units, with the added benefit of comprehensive solar and storage management.

Multiple operating modes

The inverter supports all operating modes of a modern hybrid system:

• On-grid: feeding into and/or self-consumption with the public grid
• Off-grid: stand-alone power supply without the grid, using batteries and PV
• Hybrid: combination of grid, PV and battery with intelligent priority management
• AC-coupling: adding battery storage to an existing grid-connected system without replacing the existing solar inverter
• Generator: dedicated input for a generator as a backup or to top up the battery

Programming of 6 charging/discharging time slots allows the inverter’s behaviour to be adapted to off-peak/peak tariffs or to specific constraints imposed by the grid operator.

Smart energy management and time slots

Beyond the basic modes, the Deye SG01HP3-EU-BM4 incorporates advanced energy management functions. The 6 programmable time slots allow you to define precisely when the battery should charge (from the grid or the PV system), when it should discharge, and to what depth. This fine-tuned management is particularly useful in contexts of dynamic pricing or demand response contracts, where it is cost-effective to store energy at night at reduced rates and release it during peak hours. The system also adapts to grid injection constraints imposed by certain distribution network operators.

Parallel operation with up to 10 units

The Deye 50 kW can be combined with 9 other identical units to achieve a total power output of 500 kW in a parallel configuration. This modularity is particularly suited to industrial projects, commercial buildings or agricultural operations with high energy requirements, offering the possibility of gradually expanding capacity without overhauling the system architecture. Communication between inverters is via RS-485.

Recommended applications

Industrial and commercial sites

With 50 kW of power distributed across 3 phases and a nominal output current of 72.5A per phase, the SG01HP3-EU-BM4 is designed to power heavy three-phase loads: compressors, industrial pumps, production lines and centralised air conditioning. Compatibility with generator sets ensures uninterrupted power supply at critical sites, even during prolonged grid outages.

Residential properties and isolated buildings

In off-grid mode, the inverter powers the entire building from the PV system and batteries, without a grid connection. Hybrid mode allows for a gradual transition to self-sufficiency, whilst retaining the grid as a safety net. UPS switching in under 4 ms guarantees an uninterrupted power supply to sensitive equipment, even during grid fluctuations.

Agricultural operations

Agricultural installations face high peak loads (irrigation pumps, ventilation motors, cold stores) on potentially unbalanced phases. The Deye 50 kW is designed to handle these peaks whilst optimising self-consumption of local solar generation. The IP65-rated robustness and extended operating temperature range (-40°C to +60°C) ensure reliability in exposed agricultural environments.

Extending an existing installation via AC coupling

AC-coupling mode allows the Deye SG01HP3 to be connected downstream of an existing grid-tied inverter to add battery storage capacity, without dismantling or replacing the original solar inverter. This approach significantly reduces the cost and complexity of migrating to a hybrid system for sites that are already equipped.

Remote monitoring and the Deye platform

Monitoring is carried out via the Deye web portal and mobile app, with connection options including Wi-Fi, 4G, LAN, Bluetooth or GPRS depending on the chosen configuration. The platform enables immediate remote shutdown in the event of an incident, remote firmware updates and adjustment of all parameters without the need for physical on-site intervention. This centralised monitoring is particularly valuable for installers managing a multi-site portfolio or operators wishing to track production in real time.

Robustness and certifications

With its IP65 protection rating, the SG01HP3-EU-BM4 can be installed outdoors or in premises exposed to humidity and dust. It operates from -40°C to +60°C with automatic derating above 45°C, up to an altitude of 2,000 m (derating above this altitude). The noise level is 65 dB or less. The built-in protections cover DC and AC overvoltage, short circuit, reverse polarity, overload and anti-islanding. The inverter is certified to the main European and international standards: EN 50549, VDE-AR-N 4105, G99, IEC 62116, IEC 0-21, IEC 61727, OVE-Richtlinie R25, amongst others.

Key technical specifications

Main screen

The LCD screen is touch-sensitive and displays general information about the inverter.

1 • The icon in the centre of the home screen indicates that the system is operating normally. If it displays "comm./F01~F64", this means that the inverter has communication errors or other errors. The error message will appear below this icon (errors F01-F64; details of the errors can be viewed in the System Alarms menu).

2 • The time is displayed at the top of the screen.

3 • System configuration icon. Press this button to access the system configuration screen, which includes basic configuration, battery configuration, grid configuration, system operating mode, generator port usage, advanced functions and Li-Ion battery information.

4 • The main screen displays information regarding solar, grid, load and battery. It also indicates the direction of energy flow using arrows. When power approaches a high level, the colour of the panels changes from green to red, allowing system information to be clearly viewed on the main screen.

- PV power and charging power always remain positive.

- A negative grid power reading indicates power being sold to the grid; a positive reading indicates power being drawn from the grid.

- A negative battery power reading indicates charging; a positive reading indicates discharging.

The Deye 50 kVA SG01HP3-EU-BM4 three-phase hybrid inverter is the ideal solution for powerful, scalable and smart solar installations. Its high-voltage battery compatibility, advanced energy management and robustness make it a strategic choice for ensuring performance, autonomy and reliability, whatever the type of site.

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