Hybrid inverters for C&I
Solis S6-EH3P hybrid inverter (15–35) kW · three-phase · high voltage
Solis S6-EH3P (15–35 kW) is a powerful three-phase high-voltage hybrid inverter for commercial facilities and large homes. It supports batteries rated 150–800 V, features 3–4 MPPTs and delivers instant backup power (UPS <10 ms), with parallel operation of up to 6 units.
Models
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1 / 5
Overview
Solis S6-EH3P (15–35 kW) is the flagship high-power three-phase hybrid inverter for large-scale, fail-safe energy independence systems. Rated from 15 to 35 kW, the series is designed for large residences, commercial sites, production workshops, warehouse complexes and vehicle service stations with high consumption.
The model combines high rated power with operation on high-voltage battery arrays. This substantially reduces operating currents and cable heating, raises overall system efficiency and enables high peak charge/discharge currents for rapid energy storage from the grid or a generator.
The inverter is designed for complex PV arrays: an extended number of MPPT trackers and support for 21 A of input current per string ensure full compatibility with modern high-density PV modules. Switchover to backup power in 10 ms keeps servers, data centres and automation running without interruption, while a generous overload reserve makes it easy to start heavy three-phase motors, compressors and ventilation systems.
The device supports flexible generator integration, Zero Export (grid export limiting), intelligent load prioritisation and parallel connection of up to 6 inverters to scale the total capacity of the site.
Key specifications
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Power range (kW)
15–35
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Grid phases
Three-phase (380 V)
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Number of MPPT trackers
3–4 MPPT
Key features
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Supports PV input power of up to 200% of the rated power, maximising solar energy harvest
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Supports a maximum string input current of 21 A, ensuring compatibility with high-power PV modules
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Compatible with battery modules of 100-314 Ah, reducing overall system costs
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Supports fast battery charging with a maximum charge current of 160 A
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Two independent battery ports deliver configuration flexibility and easy capacity expansion
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Delivers 160% overload for 2 seconds in off-grid mode, guaranteeing reliable start-up of heavy loads
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Offers flexible control for weak grids and hybrid generator scenarios, lowering investment costs
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SolisCloud: smart remote control, AI optimisation and instant fault clearing — all on one platform
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Integrates PV generation and energy storage for demand management and anti-reverse-current protection
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Provides dynamic reactive power compensation to improve grid power factor and reduce reactive energy costs
Technical specifications
Models
SKU: S6-EH3P15K-H-LV(21A)
DC input (PV side)
- Recommended max. PV array size
- 30 kW
- Recommended max. PV array size
- 40 kW
- Recommended max. PV array size
- 50 kW
- Recommended max. PV array size
- 60 kW
- Recommended max. PV array size
- 70 kW
- Max. usable PV module input power
- 30 kW
- Max. usable PV module input power
- 40 kW
- Max. usable PV module input power
- 50 kW
- Max. usable PV module input power
- 60 kW
- Max. usable PV module input power
- 70 kW
- Maximum input voltage
- 1000 V
- Rated voltage
- 600 V
- Start-up voltage
- 180 V
- MPPT voltage range
- 150 - 850 V
- Max. input current
- 3 × 42 A
- Max. current at the DC input
- 42 A
- Max. short-circuit current
- 3 × 60 A
- Number of MPPTs / max. inputs per MPPT
- 3 / 6
Battery
- Battery type
- Lithium-ion
- Battery voltage range
- 150 - 800 V
- Maximum charge / discharge current
- 80 A × 2
- Number of battery ports / BMS ports
- 2
- Max. charge / discharge current per port
- 80 A
- Communication
- CAN
AC output (grid side)
- Rated output power
- 15 kW
- Rated output power
- 20 kW
- Rated output power
- 25 kW
- Rated output power
- 30 kW
- Rated output power
- 35 kW
- Max. apparent output power
- 15 kVA
- Max. apparent output power
- 20 kVA
- Max. apparent output power
- 25 kVA
- Max. apparent output power
- 30 kVA
- Max. apparent output power
- 35 kVA
- Rated grid voltage
- 3/(N)/PE, 127 V / 220 V, 133 V / 230 V
- Rated grid frequency
- 50 Hz / 60 Hz
- Rated grid output current
- 39.4 A / 37.7 A
- Rated grid output current
- 52.5 A / 50.2 A
- Rated grid output current
- 65.6 A / 62.8 A
- Rated grid output current
- 78.7 A / 75.3 A
- Rated grid output current
- 91.8 A / 87.8 A
- Power factor
- > 0.99 (0.8 leading - 0.8 lagging)
- THDi
- < 3%
AC input (grid side)
- Max. input power
- 30 kW
- Max. input power
- 40 kW
- Max. input power
- 50 kW
- Max. input power
- 57.9 kW / 60 kW
- Max. input power
- 57.9 kW / 60 kW
- Input voltage range
- 176 - 265 V
- Max. input current
- 78.8 A / 75.4 A
- Max. input current
- 105 A / 100.4 A
- Max. input current
- 131.2 A / 125.6 A
- Max. input current
- 152 A / 152 A
- Max. input current
- 152 A / 152 A
AC output (backup output)
- Rated output power
- 15 kW
- Rated output power
- 20 kW
- Rated output power
- 25 kW
- Rated output power
- 30 kW
- Rated output power
- 35 kW
- Max. apparent output power
- 1.6 times of rated power, 2 s; 1.5 times of rated power, 10 s
- Backup switchover time
- < 10 ms
- Rated output voltage
- 3/(N)/PE, 127 V / 220 V, 133 V / 230 V
- Rated frequency
- 50 Hz / 60 Hz
- Rated output current
- 39.4 A / 37.7 A
- Rated output current
- 52.5 A / 50.2 A
- Rated output current
- 65.6 A / 62.8 A
- Rated output current
- 78.7 A / 75.3 A
- Rated output current
- 91.8 A / 87.8 A
- Max. AC pass-through current
- 39.4 A / 37.7 A
- Max. AC pass-through current
- 52.5 A / 50.2 A
- Max. AC pass-through current
- 65.6 A / 62.8 A
- Max. AC pass-through current
- 78.7 A / 75.3 A
- Max. AC pass-through current
- 91.8 A / 87.8 A
- THDv (at linear load)
- < 2%
AC input (generator side)
- Max. input power
- 15 kW
- Max. input power
- 20 kW
- Max. input power
- 25 kW
- Max. input power
- 30 kW
- Max. input power
- 35 kW
- Rated input current
- 39.4 A / 37.7 A
- Rated input current
- 52.5 A / 50.2 A
- Rated input current
- 65.6 A / 62.8 A
- Rated input current
- 78.7 A / 75.3 A
- Rated input current
- 91.8 A / 87.8 A
- Rated input voltage
- 3/(N)/PE, 127 V / 220 V, 133 V / 230 V
- Rated input frequency
- 50 Hz / 60 Hz
Efficiency
- Maximum efficiency
- 96.3%
- European efficiency
- 95.5%
- Max. battery charging efficiency from PV / AC
- 97.4% / 95.4%
- Battery discharge efficiency
- 95.8%
Protection
- Surge protection
- DC Type II / AC Type II
- 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 / PV II, battery II, AC III
- Built-in AFCI 2.0 module
- Optional
- Anti-islanding protection
- Yes
General data
- Max. power per phase (grid and backup)
- 33% rated power
- Dimensions (W × H × D)
- 530 × 880 × 290 mm
- Weight
- 76 kg
- Inverter topology
- Non-isolated
- Self-consumption
- < 35 W
- Operating temperature range
- -25 ~ +60°C
- Relative humidity
- 0 - 100%
- Ingress protection (IP)
- IP66
- Cooling method
- Intelligent redundant fan cooling
- Max. operating altitude
- 4000 m
- Grid connection standard
- VDE-AR-N 4105 / VDE V 0124, EN 50549-1/EN 50549-10, PTPiREE, IEC 62116, IEC 61727, PORTARIA Nº 140/PORTARIA Nº 515
- Safety / EMC standard
- IEC/EN 62109-1/-2, IEC/EN 61000-6-2/-4, EN 55011
Features
- PV connection
- MC4 connector
- Battery connection
- Terminal connector
- AC connection
- OT terminal
- Display
- 7.0" LCD display & Bluetooth + APP
Documentation and certificates
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DownloadDatasheet
S6-EH3P(15-35)K-Global-Flyer-V4.0_20260819150503.pdf
Frequently asked questions
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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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The list of validated batteries is published on the product page — in the compatible-equipment section, where one has already been compiled for that model. The voltage range (LV or HV, depending on the series) is stated in the technical specifications either way. If there is no list, or the battery you need is not on it, contact the Solis Ukraine technical department — compatibility should be confirmed separately.
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Most Solis hybrid and off-grid inverters support connecting a generator with automatic start-up when the battery is discharged. Whether a specific model has this function, and how it is wired, is stated under "Key features" and in the "Technical specifications" table of the product card.
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It depends on the series: single-phase models are designed for a 220 V grid, three-phase models for 380/400 V. The exact connection type for a given product is stated in the "Grid phases" card under "Key specifications".
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Solis equipment carries the manufacturer's warranty, which in Ukraine is administered by official dealers and authorised service centres. The exact term and conditions are stated on the warranty card and on the device's rating plate — for registration and the claim procedure, see the Support section.
Didn't find your answer?
The Solis Ukraine technical department advises on equipment compatibility, wiring diagrams and system configuration.