Low-voltage single-phase
Solis S6-EH1P hybrid inverter (12–18) kW · single-phase · low voltage
Solis S6-EH1P (12–18 kW) is a high-power single-phase low-voltage hybrid inverter from the S6 series, intended for private homes and small businesses with a high single-phase load. It works with 48 V batteries, offers a high charge/discharge current (up to 250 A), delivers instant backup mode (UPS <4 ms) and supports parallel operation of up to 6 units.
Models
1 / 4
1 / 4
Overview
The Solis S6-EH1P hybrid inverter (12–18 kW) is the «heavy artillery» among single-phase systems, engineered for sites with elevated energy consumption. Rated from 12 to 18 kW, the series features 3 independent MPPT trackers (compared with 2 MPPTs on the entry-level versions), allowing large-scale PV arrays to be built and spread across three different planes or roof pitches for maximum solar harvest. The model is ideal for large residences, commercial premises, vehicle service centres, warehouses and production areas.
The key advantage of this range is its ability to cover high peak loads and handle elevated currents on the battery side. Transfer to backup power takes less than 10 milliseconds, keeping server stations and automation systems running without interruption. The high overload capability is designed for the reliable start-up of heavy industrial and utility equipment — ventilation systems, compressors, machine tools and large pump sets.
The inverter is designed for maximum generation efficiency even in difficult conditions. Compatibility with powerful high-density PV modules and an extended number of MPPT inputs deliver fast recharging of large battery banks and stable system operation on cloudy days or throughout the winter.
Solis S6-EH1P offers flexible options for building a dependable power system. The low-voltage range works with a wide selection of high-capacity LiFePO4 batteries (40–60 V). The unit provides automatic generator control, distributes loads intelligently to preserve battery charge, and lets the system scale through parallel connection of up to 6 inverters.
Key specifications
-
Power range (kW)
12–18
-
Grid phases
Single-phase (220 V)
-
Number of MPPT trackers
3–4 MPPT
-
Battery voltage
Low voltage — LV (48 V)
-
Built-in monitoring
Wi-Fi, LAN, 4G
Key features
-
Supports PV input power of up to 160% of the inverter's rated power, maximising solar energy harvest
-
Supports PV input current of up to 20 A, compatible with future higher-power PV modules
-
200% overload for 10 seconds in off-grid mode, ensuring reliable start-up of motors, water pumps and air conditioners
-
Seamless switching between grid and off-grid modes in under 10 ms for uninterrupted power supply
-
More battery options, compatible with any battery from 40 V to 60 V
-
Supports existing grid-tied solar installations for export control and off-grid operation
-
Multiple generator connection and automatic control methods for flexible on-site deployment
-
Supports up to 6 units in parallel, expanding system capacity
-
Intelligent load management that extends backup runtime for critical loads
-
Configurable battery reserve level for uninterrupted power supply
Technical specifications
Models
SKU: S6-EH1P12K03-NV-YD-L
DC input (PV side)
- Recommended max. PV array size
- 24 kW
- Recommended max. PV array size
- 28 kW
- Recommended max. PV array size
- 32 kW
- Recommended max. PV array size
- 36 kW
- Max. usable PV module input power
- 19.2 kW
- Max. usable PV module input power
- 22.4 kW
- Max. usable PV module input power
- 25.6 kW
- Max. usable PV module input power
- 28.8 kW
- Maximum input voltage
- 550 V
- Rated voltage
- 380 V
- Start-up voltage
- 100 V
- MPPT voltage range
- 80 - 520 V
- Max. input current
- 40 A / 40 A / 40 A
- Max. input current
- 40 A / 40 A / 40 A
- Max. input current
- 40 A / 40 A / 40 A
- Max. input current
- 42 A / 42 A / 42 A
- Max. current at the DC input
- 20 A
- Max. current at the DC input
- 20 A
- Max. current at the DC input
- 20 A
- Max. current at the DC input
- 21 A
- Max. short-circuit current
- 50 A / 50 A / 50 A
- Number of MPPTs / max. inputs per MPPT
- 3 / 6
Battery
- Battery type
- Lithium-ion / lead-acid
- Battery voltage range
- 40 - 60 V
- Max. charge / discharge power
- 250 A
- Max. charge / discharge power
- 290 A
- Max. charge / discharge power
- 290 A
- Max. charge / discharge power
- 320 A
- Number of battery ports / BMS ports
- 1 / 1
- Communication
- CAN / RS485
AC output (grid side)
- Rated output power
- 12 kW
- Rated output power
- 14 kW
- Rated output power
- 16 kW
- Rated output power
- 18 kW
- Max. apparent output power
- 12 kVA
- Max. apparent output power
- 14 kVA
- Max. apparent output power
- 16 kVA
- Max. apparent output power
- 18 kVA
- Rated grid voltage
- L/N/PE, 220 V / 230 V
- Rated grid frequency
- 50 Hz / 60 Hz
- Rated grid output current
- 54.5 A / 52.2 A
- Rated grid output current
- 63.6 A / 60.9 A
- Rated grid output current
- 72.7 A / 69.6 A
- Rated grid output current
- 81.8 A / 78.2 A
- Power factor
- > 0.99 (-0.8 to +0.8)
- THDi
- < 3%
AC input (grid side)
- Max. input power
- 18 kW
- Max. input power
- 21 kW
- Max. input power
- 24 kW
- Max. input power
- 27 kW
- Input voltage range
- 187 - 253 V
- Max. input current
- 81.8 A / 78.3 A
- Max. input current
- 95.5 A / 91.3 A
- Max. input current
- 109.1 A / 104.3 A
- Max. input current
- 122.7 A / 117.4 A
AC output (backup output)
- Rated output power
- 12 kW
- Rated output power
- 14 kW
- Rated output power
- 16 kW
- Rated output power
- 18 kW
- Max. apparent output power
- Twice the rated power for 10 seconds
- Backup switchover time
- < 10 ms
- Rated output voltage
- L/N/PE, 220 V / 230 V
- Rated frequency
- 50 Hz / 60 Hz
- Rated output current
- 54.5 A / 52.2 A
- Rated output current
- 63.6 A / 60.9 A
- Rated output current
- 72.7 A / 69.6 A
- Rated output current
- 81.8 A / 78.2 A
- Max. AC pass-through current
- 90 A
- THDv (at linear load)
- < 3%
AC input (generator side)
- Max. input power
- 12 kW
- Max. input power
- 14 kW
- Max. input power
- 16 kW
- Max. input power
- 18 kW
- Rated input current
- 54.5 A / 52.2 A
- Rated input current
- 63.6 A / 60.9 A
- Rated input current
- 72.7 A / 69.6 A
- Rated input current
- 81.8 A / 78.2 A
- Rated input voltage
- L/N/PE, 220 V / 230 V
- Rated input frequency
- 50 Hz / 60 Hz
Efficiency
- Maximum efficiency
- 97.6%
- European efficiency
- 97.0%
- Battery charged from PV / AC — maximum efficiency
- > 94.9% / > 94.33%
- Battery discharge efficiency
- 93.51%
Protection
- Surge protection
- Yes
- Overcurrent protection
- Yes
- Insulation resistance monitoring
- Yes
- Residual current detection
- Yes
- Built-in PV switch
- Yes
- DC reverse polarity protection
- Yes (PV modules only)
- Ingress protection / overvoltage category
- I / II (PV and BAT), III (MAINS, BACKUP and GEN)
- Built-in AFCI 2.0 module
- Optional
- Anti-islanding protection
- Yes
General data
- Dimensions (W × H × D)
- 459 × 845 × 313 mm
- Weight
- 55.5 kg
- Inverter topology
- Non-isolated (PV), isolated (battery)
- Self-consumption
- < 40 W
- Operating temperature range
- -25 ~ +60°C
- Relative humidity
- 0 - 100%
- Ingress protection (IP)
- IP66
- Noise level (typical)
- < 65 dB(A)
- Cooling method
- Fan with intelligent speed control
- Max. operating altitude
- 4000 m
- Grid connection standard
- NRS 097-2-1, IEC 62116, IEC 61727, IEC 60068, IEC 61683, EN 50530, EN50549-1
- Safety / EMC standard
- IEC/EN 62109-1/-2, EN 61000-6-2/-3
Features
- PV connection
- MC4 connector
- Battery connection
- Terminal block
- AC connection
- Terminal block
- Display
- 7.0" LCD display and Bluetooth + app
- Communication interface
- Standard: Wi-Fi+LAN+Bluetooth, CAN-BMS, CAN-Parallel × 2, RS485-Meter, RS485, DRM, DI, DO × 2; optional: 4G
Documentation and certificates
-
DownloadDatasheet
Гібридний інвертор Solis S6-EH1P (12–18) кВт · однофазний · низьковольтний.pdf
-
Download
Datasheet
S6-EH1P(12-18)K-Flyer-V1.1_20260528140033.pdf
-
DownloadUser manual
Гібридний інвертор Solis S6-EH1P (12–18) кВт · однофазний · низьковольтний_інструкція.pdf
-
DownloadCertificate 1
Гібридний інвертор Solis S6-EH1P (12–18) кВт · однофазний · низьковольтний_сертифікат1.pdf
-
Download
Certificate 2
Гібридний інвертор Solis S6-EH1P (12–18) кВт · однофазний · низьковольтний_сертифікат2.pdf
-
Download
Certificate 3
Гібридний інвертор Solis S6-EH1P (12–18) кВт · однофазний · низьковольтний_сертифікат3.pdf
-
Download
Certificate 4
Гібридний інвертор Solis S6-EH1P (12–18) кВт · однофазний · низьковольтний_сертифікат4.pdf
-
Download
Certificate 5
Гібридний інвертор Solis S6-EH1P (12–18) кВт · однофазний · низьковольтний_сертифікат5.pdf
-
Download
Certificate 6
Гібридний інвертор Solis S6-EH1P (12–18) кВт · однофазний · низьковольтний_сертифікат6.pdf
-
Download
Certificate 7
Гібридний інвертор Solis S6-EH1P (12–18) кВт · однофазний · низьковольтний_сертифікат7.pdf
-
Download
Certificate 8
Гібридний інвертор Solis S6-EH1P (12–18) кВт · однофазний · низьковольтний_сертифікат8.pdf
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.
-
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.
-
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.
-
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".
-
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.