Products Description
In today’s energy landscape, businesses and homeowners alike demand more than just backup power. They need intelligent, future-proof solutions that maximize solar harvest, ensure uninterrupted operation, and turn energy assets into profit. Enter the ONESUN Single Phase Off-grid High Frequency Inverter (SHH Series) – available in 3.5kW, 6kW, and 11kW – a multi-functional, enhanced PV, industrial-grade integrated energy storage inverter designed to excel in the most demanding environments.

Maximize Solar Yield, Minimize Waste
The SHH Series features advanced PV oversizing capability, allowing you to install more solar panels than the inverter’s nominal rating. This means capturing energy during low-light hours and cloudy days, effectively boosting daily generation without adding extra inverters. The result? Enhanced efficiency and maximized returns on your PV investment. Complementing this is a smart PV-grid complementary algorithm that ensures zero PV waste – every kilowatt-hour your panels produce is either used, stored, or sold, never wasted.
🌿 ONESUN · SHH SERIES
Single Phase Off-grid High Frequency Inverter
Pure Sine Wave Inverter with MPPT · Hybrid Solar Technology
| Parameter / Model | SHH-3.5kW | SHH-6kW | SHH-11kW |
|---|---|---|---|
| ☀️ PV DATA | |||
| PV Charging Mode | MPPT | MPPT | MPPT |
| Max. PV Input Power | 6500W | 8500W | 7500W*2 |
| MPPT Input Voltage Range | 120V~500VDC | — | 90~500VDC |
| Max. PV Input Voltage | — | 500VDC | — |
| Max. PV Input Current | 16A | 20A | 18A / 18A |
| Max. PV Charging Current | 80A | 100A | 150A |
| No. of MPPT Trackers | 1 | — | 2 |
| No. of Strings Per MPPT Tracker | 1 | — | 1+1 |
| ⚡ AC DATA | |||
| Rated Power | 3500W | 6000W | 11000W |
| Rated Input Voltage | 220 / 230 / 240 VAC (self-adapting) | ||
| Voltage Range | 90V~280V ±3V (Normal Mode) ; 170V~280V ±3V (UPS Mode) | ||
| Input Frequency | 50Hz / 60Hz (Self-adapting) | ||
| Rated Output Voltage | 220 / 230 / 240 VAC ±5% | ||
| Rated Output Frequency | 50Hz / 60Hz ±0.1% | ||
| Output Waveform | Pure Sine Wave | ||
| Peak Power | 6000VA | 10000VA | 22000VA |
| Max. AC Charging Current | 60A | 60A | 60A |
| Max. Charge Current (Total) | 60A | 100A | 150A |
| 🔋 BATTERY DATA | |||
| Battery Type | Lead-acid / Water / Lithium-ion / Gel | ||
| Rated Battery Voltage | 24VDC | 48VDC | — |
| Charging Voltage Range (Settable) | 27~28.2VDC | 54~56.4VDC | — |
| 📈 EFFICIENCY | |||
| MPPT Efficiency | >98% | >98% | >98% |
| Efficiency (AC Charging) | >98% | >98% | >98% |
| Efficiency (Battery Mode) | 91~94% | 91~94% | 91~94% |
| 🖥️ DISPLAY & INTERFACE | |||
| LCD Display | LCD display operating mode, load, input, output, etc. | ||
| RS232 Communication | Baud Rate 2400 | ||
| Extendable Communication Interface | Lithium Battery BMS Communication, WiFi, Dry Contact, etc. | ||
| Parallel Interface | NO | YES | — |
| 📦 GENERAL DATA | |||
| Ingress Protection (IP) | IP21 | ||
| With PayGo | Optional | ||
| Operating Temperature | 0°C ~ 40°C | ||
| Storage Temperature | -15°C ~ 60°C | ||
| Operating Humidity | 20% ~ 95% (Non-condensing) | ||
| Operating Altitude | ≤1000m | ||
| Noise Level | ≤50dB | ||
| Input Format | L+N+PE | ||
| Transfer Time | 10ms for Computer Equipment ; 20ms for Home Appliances | ||
| Dimensions (W*D*H) - Packaged | 385*195*565 mm | 385*195*565 mm | 702*257*753 mm |
| Weight (Net / Gross) | N.W. 9.1kg / G.W. 10.3kg | N.W. 10.7kg / G.W. 12.1kg | N.W. 22.2kg / G.W. 23.7kg |
| Safety Standard | EN-IEC 60335-1, EN-IEC 60335-2-29, IEC 62109-1 | ||
ONESUN SHH Series – High Frequency Pure Sine Wave Inverter | MPPT technology optimized for off-grid solar systems.
Specifications subject to change without notice | Data based on official product catalog (SHH-3.5kW / 6kW / 11kW)
Seamless Power, Anywhere, Anytime
Unpredictable grid outages can cripple operations. The SHH Series delivers seamless on/off-grid switching in milliseconds, so sensitive loads keep running without interruption. Whether you’re in a remote off-grid cabin, a farm, or a small business in an unstable grid area, this inverter guarantees high power reliability. And because it supports electricity selling and metering, you can feed excess energy back to the grid, turning your system into a revenue-generating asset.
Dual Battery Modes – Transform Assets into Income
Energy storage should work for you, not just sit idle. The SHH Series offers dual battery modes – one for self-consumption optimization and another for peak shaving / arbitrage. By charging when electricity is cheap (or solar is abundant) and discharging during peak price periods, you transform your battery bank from a passive cost into an active income stream. This intelligent profit mode is accessible via simple settings, putting financial control in your hands.

Transparent Management, Meticulous Accounting
Knowledge is power. The SHH Series provides transparent power usage management with real-time monitoring of PV generation, battery status, grid import/export, and consumption. Every kWh is meticulously calculated, giving you clear insights to further optimize your energy strategy. Whether you’re an installer managing multiple sites or a homeowner tracking savings, the data is always at your fingertips.
Industrial-Grade Reliability – Worry-Free in Harsh Environments
Built to last, the SHH Series meets industrial-grade standards for temperature extremes, humidity, and dust. Its high-frequency topology ensures compact size and efficiency without compromising durability. From scorching deserts to cold highlands, this inverter performs reliably, year after year.
Three Priority Working Modes – Flexible to Your Needs
Choose between Photovoltaic Priority (maximizing solar use), Battery Priority (storing energy for backup or peak shaving), or AC Priority (relying on grid when most economical). This flexibility adapts to time-of-use tariffs, weather forecasts, or critical load requirements.
The ONESUN SHH Series is more than an inverter – it’s a complete energy management system. It combines PV oversizing, seamless switching, dual profit modes, and industrial toughness into a single, easy-to-install unit. For homeowners seeking energy independence, businesses chasing lower electricity bills, or off-grid pioneers needing absolute reliability, the SHH Series delivers.
Go further with ONESUN. Maximize every ray, monetize every watt, and never worry about power again.
Article Source: Lithium battery manufacturer - ONESUN China
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