Solis inverter S6-EH3P12K-H-EU(21A) Three Phase | High Voltage
Solis Inverter S6-EH3P12K-H-EU(21A) Three Phase Hybrid Inverter
Product Description
The Solis inverter S6-EH3P12K-H-EU(21A) is a high-performance three-phase hybrid solar inverter designed for high-voltage battery systems (≥200V). It integrates advanced hybrid grid/off-grid operation, multi-MPPT technology, and three-phase balanced/unbalanced output capabilities. The product supports powerful expansion with up to 6 units in parallel, 4-channel MPPT inputs, and 160% PV input oversizing, delivering exceptional solar energy harvesting and power supply stability. With IP66 protection, seamless grid transfer within 10ms, strong overload capacity, and AI-powered smart control, it is an ideal solution for residential, commercial, and industrial scenarios requiring high reliability, flexible energy management, and long-term durability.
Key Advantages
High-Efficiency Solar Harvesting
Equipped with up to 4 MPPT inputs ideal for complex installations, supports 160% PV input oversizing to maximize solar energy utilization and power generation efficiency.
Strong & Stable Output Performance
160% off-grid overload capacity for 60s ensures stable startup of inductive loads, supports three-phase unbalanced output with each phase up to 50% rated power.
Seamless & Flexible Power Supply
Ultra-fast grid transfer within 10ms for uninterrupted power, compatible with grid-tied PV systems and supports grid-side generator access for weak grid scenarios.
Flexible System Expansion
Supports up to 6 units in parallel for large-capacity system expansion, with customizable battery backup level to guarantee uninterrupted power for critical loads.
PV-Only Off-Grid Operation
Supports off-grid working mode using solar power only, effectively reducing initial system investment cost while maintaining stable and reliable power supply.
Intelligent Control & Durability
AI-powered energy management and VPP-ready for higher savings, industrial-grade IP66 protection ensures stable operation in harsh environments.
Technical Specifications
| Solis inverter Models | 12K |
|---|---|
| Input DC (PV side) | |
| Recommended max. PV array size | 24 kW |
| Max. usable PV input power | 19.2 kW |
| Max. input voltage | 1000 V |
| Rated voltage | 600 V |
| Start-up voltage | 160 V |
| MPPT voltage range | 200 - 850V |
| Max. input current | 4 × 21A |
| Max. short circuit current | 4 × 31.5A |
| MPPT number / Max. input strings number | 4 / 4 |
| Battery | |
| Battery type | Li-ion |
| Battery voltage range | 120 - 700 V |
| Max. charge / discharge power | 12 kW |
| Max. charge / discharge current | 50 A |
| Communication | CAN/RS485 |
| Output AC (Grid side) | |
| Rated output power | 12 kW |
| Max. apparent output power | 12 kVA |
| Rated grid voltage | 3/N/PE, 380 V / 400 V |
| Rated grid frequency | 50 Hz / 60 Hz |
| Rated grid output current | 18.2 A / 17.3 A |
| Max. output current | 18.2 A / 17.3 A |
| Power factor | > 0.99 (0.8 leading - 0.8 lagging) |
| THDi | < 3% |
| Input AC (Grid side) | |
| Input voltage range | 304 - 437 V / 320 - 460 V |
| Max. input current | 27.3 A / 26.0 A |
| Rated grid frequency | 50 Hz / 60 Hz |
| Frequency range | 45 - 55 Hz / 55 - 65 Hz |
| Output AC (Back-up) | |
| Rated output power | 12 kW |
| Max. apparent output power | 1.6 times of rated power, 60s |
| Back-up switch time | < 10 ms |
| Rated output voltage | 3/N/PE, 380 V / 400 V |
| Rated frequency | 50 Hz / 60 Hz |
| Rated output current | 18.2 A / 17.3 A |
| THDv @ linear load | < 3% |
| Efficiency | |
| Max. efficiency | 97.85% |
| EU efficiency | 97.51% |
| BAT charged by PV max. efficiency | 98.31% |
| BAT charged / discharged to AC max. efficiency | 97.50% |
| Protection | |
| Anti-Islanding protection | Yes |
| Output over current protection | Yes |
| Short circuit protection | Yes |
| Surge protection | DC Type II / AC Type II (optional) |
| Integrated DC switch | Yes |
| DC reverse-polarity protection | Yes |
| Battery reverse protection | Yes |
| General Data | |
| Max. power per phase | 50% rated power |
| Dimensions (W × H × D) | 563 × 412 × 230 mm |
| Weight | 34.5 kg |
| Topology | Transformerless |
| Self-consumption (night) | < 25 W |
| Operating ambient temperature range | -25 ~ +60℃ |
| Relative humidity | 0 - 100% |
| Ingress protection | IP66 |
| Noise emission (typical) | < 46.9 dB(A) |
| Cooling concept | Natural cooling |
| Max. operation altitude | 4000 m |
| Grid connection standard | G98 or G99, VDE-AR-N 4105/VDE 0124, EN 50549-1, VDE 0126/JUTE C 15/VFR:2019, RD 1699/RD 244/UNE 206006/UNE 206007-1, CEI 0-21, C10/11, NRS 097-2-1, TOR, EIFS 2018/2, IEC 62116, IEC 61727, IEC 60068, IEC 61683, EN 50530, MEA, PEA, EK18 |
| Safety / EMC standard | IEC/EN 61009-1-2, IEC/EN 61000-6-1/3 |
| Features | |
| PV connection | MC4 connector |
| Battery connection | Quick connection plug |
| AC connection | Quick connection plug |
| Display | LED indicator & Bluetooth + APP |
| Communication | CAN, RS485, Optional: Wi-Fi, Cellular, LAN |
Application Scenarios & Target Markets
Designed for large residential, commercial and global high-efficiency energy storage demands
Large Residential Homes
- Ideal for villas and large households with heavy power loads
- Supports 160% overload for stable operation of AC & pumps
- Seamless 10ms grid switching for uninterrupted power
Commercial Users
- Suitable for offices, shops and small industrial scenarios
- Three-phase unbalanced output for diversified loads
- High system efficiency reduces electricity costs
EPC Contractors
- Compatible with 21A high-power PV modules for easy installation
- Supports 160% PV oversizing to improve energy yield
- Compatible with existing grid-tied PV systems
Global Key Markets
- Widely used in Middle East, Europe, Asia and other regions
- High performance meets strict international standards
- Stable and reliable for various grid environments
Off-Grid & Remote Areas
- Ideal for remote homes, farms and areas with unstable grid access
- Provides reliable power supply with solar and battery integration
- Supports off-grid operation for continuous and independent energy use
Backup Power Applications
- Suitable for homes, offices and critical power demand scenarios
- Fast grid switching ensures uninterrupted operation of essential loads
- Provides reliable backup power during outages and grid failures
Factory Strength
Advanced production equipment, standardized workshop, strict quality control system
Certifications
Complete international certifications, product quality meets global standards
International Certification
Quality Certificate
Safety Standard
CE Certification
ISO Certified
RoHS Directive
Our Partners
Trusted by global brands, long-term strategic cooperation
Our Service Policy
Fast response, professional support, and worry-free cooperation
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Dedicated Support
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Office Address: 701, Building A, Yonghuayuan Business Building, Baotian 2nd Road, Chentian Community, Xixiang Street, Bao'an District, Shenzhen, Guangdong Province, China
Factory Address 1: Room 701, Building 2, Kegu Industrial Park, Zone B, Jian'an Road, No. 790, Chang'an Town, Dongguan City, Guangdong Province, China
Factory Address 2: Building 7, Phase II Standardized Factory, Innovation Industrial Park, Duji Economic Development Zone, Huaibei City, Anhui Province, China