Residential

Solis FlexAIO S7-EH3P all-in-one system (5–20) kW · 6–54 kWh · three-phase

Solis FlexAIO S7-EH3P (5–20 kW, 6–54 kWh) is a high-performance three-phase all-in-one system that integrates a three-phase hybrid inverter with scalable battery storage. It is designed for building powerful off-grid or backup energy systems in large private homes, country residences, offices and small and medium-sized business facilities.

Models

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Solis FlexAIO S7-EH3P all-in-one system (5–20) kW · 6–54 kWh · three-phase · 5K03

Overview

Solis FlexAIO S7-EH3P (5–20 kW) is the flagship three-phase All-in-One energy storage and management system, pairing a powerful three-phase hybrid inverter with a modular battery of 6 to 54 kWh. The model is built for uncompromising backup power and self-consumption optimisation at sites with a three-phase supply.

Thanks to a well-considered all-in-one design with "Plug & Play" connections, the system installs quickly and neatly, with no bulky external cable runs between the inverter and the battery packs. The storage unit is built around exceptionally safe LiFePO₄ (lithium iron phosphate) cells with a service life of over 6000 cycles, while the integrated multi-level BMS controller continuously monitors the safety and balance of every module.

The inverter unit withstands significant inrush overloads to confidently start three-phase equipment (pumps, compressors, ventilation and climate-control systems) and guarantees switchover to backup in under 10 ms. The model works with modern high-power PV modules, integrates fully with diesel gensets, supports Peak Shaving and Zero Export, and offers smart management through the SolisCloud app.

Technical specifications

Models

SKU: FlexAIO S7-EH3P5K03

DC input (PV side)

Recommended max. PV array size: 10 kW
Recommended max. PV array size: 12 kW
Recommended max. PV array size: 16 kW
Recommended max. PV array size: 20 kW
Recommended max. PV array size: 24 kW
Recommended max. PV array size: 30 kW
Recommended max. PV array size: 40 kW
Max. usable PV module input power: 8 kW
Max. usable PV module input power: 9.6 kW
Max. usable PV module input power: 12.8 kW
Max. usable PV module input power: 16 kW
Max. usable PV module input power: 19.2 kW
Max. usable PV module input power: 24 kW
Max. usable PV module input power: 32 kW
Maximum input voltage: 1000 V
Rated voltage: 680 V
Start-up voltage: 180 V
MPPT voltage range: 160 - 950 V
Max. MPPT input current: 2 × 21 A
Max. MPPT short-circuit current: 2 × 24 A
Number of MPPTs / max. inputs per MPPT: 3 / 1 + 1 + 1
Number of MPPTs / max. inputs per MPPT: 3 / 1 + 1 + 1
Number of MPPTs / max. inputs per MPPT: 3 / 1 + 1 + 1
Number of MPPTs / max. inputs per MPPT: 4 / 1 + 1 + 1 + 1
Number of MPPTs / max. inputs per MPPT: 4 / 1 + 1 + 1 + 1
Number of MPPTs / max. inputs per MPPT: 4 / 1 + 1 + 1 + 1
Number of MPPTs / max. inputs per MPPT: 4 / 1 + 1 + 1 + 1

Battery (connection)

Battery module models: Solis BAT Series (LiFePO )
Number of modules per controller: 1 ~ 6pcs
Battery module voltage range: 520 - 812 V
Maximum charge / discharge power: 5 kW
Maximum charge / discharge power: 6 kW
Maximum charge / discharge power: 8 kW
Maximum charge / discharge power: 10 kW
Maximum charge / discharge power: 12 kW
Maximum charge / discharge power: 15 kW
Maximum charge / discharge power: 20 kW
Maximum charge / discharge current: 9 A
Maximum charge / discharge current: 11 A
Maximum charge / discharge current: 15 A
Maximum charge / discharge current: 19 A
Maximum charge / discharge current: 23 A
Maximum charge / discharge current: 28 A
Maximum charge / discharge current: 38 A

AC output (grid side)

Rated output power: 5 kW
Rated output power: 6 kW
Rated output power: 8 kW
Rated output power: 10 kW
Rated output power: 12 kW
Rated output power: 15 kW
Rated output power: 20 kW
Max. apparent output power: 5 kVA
Max. apparent output power: 6 kVA
Max. apparent output power: 8 kVA
Max. apparent output power: 10 kVA
Max. apparent output power: 12 kVA
Max. apparent output power: 15 kVA
Max. apparent output power: 20 kVA
Rated grid voltage: 3/N/PE, 220 V / 380 V; 3/N/PE, 230 V / 400 V
Rated grid frequency: 50 Hz / 60 Hz
Rated grid output current: 7.6 A / 7.2 A
Rated grid output current: 9 A / 8.6 A
Rated grid output current: 12.2 A / 11.5 A
Rated grid output current: 15.2 A / 14.4 A
Rated grid output current: 18.2 A / 17.3 A
Rated grid output current: 22.8 A / 21.7 A
Rated grid output current: 30.4 A / 28.8 A
Power factor: > 0.99 (0.8 leading - 0.8 lagging)
THDi: < 3%

AC input (grid side)

Max. input power: 5 kW
Max. input power: 6 kW
Max. input power: 8 kW
Max. input power: 10 kW
Max. input power: 12 kW
Max. input power: 15 kW
Max. input power: 20 kW
Input voltage range: 323 - 460 V
Max. input current: 15.2 A
Max. input current: 18 A
Max. input current: 24.4 A
Max. input current: 30 A
Max. input current: 30 A
Max. input current: 45 A
Max. input current: 45 A

AC output (backup output)

Rated output power: 5 kW
Rated output power: 6 kW
Rated output power: 8 kW
Rated output power: 10 kW
Rated output power: 12 kW
Rated output power: 15 kW
Rated output power: 20 kW
Max. apparent output power: 1.5 times of rated power, 10 s
Backup switchover time: < 10 ms
Rated output voltage: 3/N/PE, 220 V / 380 V; 3/N/PE, 230 V / 400 V
Rated frequency: 50 Hz a / 60 Hz
Rated output current: 7.6 A / 7.2 A
Rated output current: 9 A / 8.6 A
Rated output current: 12.2 A / 11.5 A
Rated output current: 15.2 A / 14.4 A
Rated output current: 18.2 A / 17.3 A
Rated output current: 22.8 A / 21.7 A
Rated output current: 30.4 A / 28.8 A
Max. continuous AC pass-through current: 15.2 A
Max. continuous AC pass-through current: 18 A
Max. continuous AC pass-through current: 24.4 A
Max. continuous AC pass-through current: 30 A
Max. continuous AC pass-through current: 30 A
Max. continuous AC pass-through current: 45 A
Max. continuous AC pass-through current: 45 A
THDv (at linear load): < 3%

AC input (generator side)

Max. input power: 5 kW
Max. input power: 6 kW
Max. input power: 8 kW
Max. input power: 10 kW
Max. input power: 12 kW
Max. input power: 15 kW
Max. input power: 20 kW
Max. input current: 7.6 A / 7.2 A
Max. input current: l 9 A / 8.6 A
Max. input current: 12.2 A / 11.5 A
Max. input current: 15.2 A / 14.4 A
Max. input current: 18.2 A / 17.3 A
Max. input current: 22.8 A / 21.7 A
Max. input current: 30.4 A / 28.8 A
Rated input voltage: 3/N/PE, 220 V / 380 V; 3/N/PE, 230 V / 400 V
Rated input frequency: 50 Hz / 60 Hz

Efficiency

Maximum efficiency: ≥ 97.7%
European efficiency: 96.1%
European efficiency: 96.6%
European efficiency: 97.1%
European efficiency: 97.2%
European efficiency: 97.2%
European efficiency: 97.3%
European efficiency: 97.3%

Protection

Surge protection: DC Type II / AC Type II (Optional)
Output circuit overcurrent protection: Yes
Insulation resistance monitoring: Yes
Residual current detection: Yes
Built-in PV switch: Yes
DC reverse polarity protection: Yes
Ingress protection / overvoltage category: I / II
Built-in AFCI module: Yes
Anti-islanding protection: Yes

General data

Max. power per phase (grid and backup): 50%
Dimensions (W × H × D): 850 × 400 × 265 mm
Weight: 35 kg
Weight: 35 kg
Weight: 35 kg
Weight: 35 kg
Weight: 35 kg
Weight: 38 kg
Weight: 38 kg
Inverter topology: Non-isolated
Operating temperature range: -30 ~ +60°C (Derated above 45°C)
Relative humidity: 0 - 95%
Ingress protection (IP): IP66
Noise level (typical): <35 dB(A) (@ Rated Power)
Noise level (typical): <35 dB(A) (@ Rated Power)
Noise level (typical): <35 dB(A) (@ Rated Power)
Noise level (typical): <35 dB(A) (@ Rated Power)
Noise level (typical): <35 dB(A) (@ Rated Power)
Noise level (typical): <55 dB(A) (@ Rated Power)
Noise level (typical): <55 dB(A) (@ Rated Power)
Cooling method: Natural cooling
Cooling method: Natural cooling
Cooling method: Natural cooling
Cooling method: Natural cooling
Cooling method: Natural cooling
Cooling method: Smart fan cooling
Cooling method: Smart fan cooling
Max. operating altitude: 4000 m (Derated above 2000 m)
Grid connection standard: G98, G99, VDE-AR-N 4105/VDE V 0124, EN 50549-1, CEI 0-21, C10/11, IEC 62116, IEC 61727, IEC 60068, IEC 61683
Safety / EMC standard: IEC/EN 62109-1/-2, IEC/EN 61000-6-1/-3

Features

DC connection: MC4 Quick connection plug (PV)
AC connection: Quick connection plug
Display: LED
Communication: RS485, Optional: Wi-Fi, LAN, Ethernet, DI × 2 / DO × 2 / DRM

Documentation and certificates

Datasheet

All-in-One система Solis FlexAIO S7-EH3P (5–20) кВт · 6–54 кВт·год · трифазна.pdf

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Frequently asked questions

Start from the site's average daily consumption and the peak load the inverter has to carry in off-grid mode. The power range of each modification and the recommended PV array size for it are listed in the product card under "Key specifications" — for a precise selection, contact a Solis dealer or use the form below.

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