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Off grid 11KW solar inverter with pure sine wave

Off grid 11KW solar inverter with pure sine wave

Overview
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Description:

1.Basic Structure

The home photovoltaic energy storage inverter is mainly composed of the following parts:

DC Input Terminal: It is connected to the photovoltaic modules and receives direct current (DC).

Inverter Module: Converts direct current into alternating current (AC).

AC Output Terminal: Outputs alternating current for use by household electrical appliances or for grid connection.

Energy Storage Module: Connected to the energy storage battery, it enables the storage and release of electrical energy.

Control Unit: Responsible for the monitoring and control of the system to ensure the coordinated operation of each module.

2.Working Process

The working process of the home photovoltaic energy storage inverter can be divided into the following steps:

Photovoltaic Power Generation: The photovoltaic modules convert solar energy into direct current, which is transmitted to the inverter through the DC input terminal.

Electrical Energy Conversion: The inverter module converts direct current into alternating current, which is supplied to household electrical appliances through the AC output terminal or used for grid-connected power generation.

Electrical Energy Storage: When the power generated by the photovoltaic system exceeds the household electricity demand, the energy storage module stores the excess electrical energy in the energy storage battery.

Electrical Energy Release: When the power generated by the photovoltaic system is insufficient, the energy storage module releases electrical energy from the energy storage battery to supplement the household electricity demand.

3.Intelligent Control

The home photovoltaic energy storage inverter is usually equipped with an intelligent control system. It can monitor the power generated by the photovoltaic system, the status of the energy storage battery, and the household electricity demand in real time, and automatically adjust the conversion and storage of electrical energy to improve the efficiency and stability of the system. For example, when the electricity price of the power grid is high, the system can preferentially use the electrical energy in the energy storage battery to reduce the electricity cost; when the electricity price of the power grid is low, the system can feed the excess electrical energy into the grid for power generation to increase the revenue.

Specifications:

Model		GA11048MH
Nominal Voltage		220/230/240VAC
Voltage Range		90–280VAC±3V（Inverter Mode）170–280VAC±3V（UPS Mode）
Frequency		50–60Hz Auto sensing
Rated Output Power		11000W
Output Voltage(AC)		220/230/240VAC±5%
Output Frequency		50/60Hz±0.1%
Waveform		Pure sine wave
Transfer time(AC to DC)		10ms for Computer Equipment, 20ms for Household Equipment
Peak Power		22000VA
Overload Capacity(Battery Mode)		21s@105%~150% Load 11s@150%~200% Load，400ms@>200% Load
Grid connected Operation		220/230/240VAC
Grid Voltage Range		195–253VA
Grid Frequency Range		49–51±1Hz/59–61±1Hz
Output Current		34.7A / 47.8A
Power Factor Range		>0.99
Peak Efficiency(Battery Model)		0.98
Nominal Voltage		48VDC
Constant Charging Voltage		56.4VDC
Float Charging Voltage		54VDC
PV Charging Way		MPPT
Max PV Input Power		2*5500W
MPPT Controller Voltage		90–500VDC
MAX PV Input Voltage		500VDC
MAX PV Charge Current		150A
MAX AC Charge Current		150A
MAX Charge Current		150A
LCD Display		AC input Voltage, AC input frequency, PV Voltage, PV Current, Output Voltage, Output Frequency, Battery Voltage, Load Current,
RS232		5PIN/Pitch2.0mm
Expansion Slot Communication Interface		2×5PIN/Pitch2.54mm，Lithium battery BMS communication card、WIFI, etc
Parallel Interface		Yes
Operating Temperature		0~40℃
Humidity		20%~95%(Non-condensing)
Storage Temperature		15~60℃
Altitude		<1000m
Noise(dB)		≤50db

Applications:

For off-grid solar applications like residential rooftops or small commercial setups, this product delivers efficient lithium battery charging, intelligent power management, parallel operation for expanded load capacity, and WiFi-enabled real-time monitoring—ideal for users seeking cost-effective, eco-friendly solar energy solutions.

Advantages：

Lithium Battery Auto-Restart：Easier lithium battery charging with auto-restart function.
Intelligent Power Supply：Smart distribution of solar panel/mains/battery power via intelligent mode.
Adjustable Charging Voltage：Utility/PV charging voltage adjusts to match different battery charging requirements.
Convenient Installation & Transportation：Simple to install and transport.
Safer Installation：Battery reverse connection protection (no fuse switch) ensures safer setup.
High Efficiency & Energy Saving：PF1.0 high-efficiency inversion – low consumption, eco-friendly, cost-saving.
Battery-Free Operation：Supports working without batteries to reduce solar system costs.
Easy Parallel Expansion：Up to 9 units parallel – handles larger loads, simple capacity expansion.
Real-Time Monitoring：External WiFi enables real-time data supervision.
Lithium Battery BMS Protocol：Optimized lithium battery management with built-in BMS protocol.

FAQ：

---More than 20 years Electrical Equipment factory experiences
---Professional sales team and R & D team
---Qualified product and competitive price
---Delivery in time
---Sincerely services

Q2: How is your after-sale service?
---We provide 3years warranty and 1% sapre parts for free
---We will repair the PCB or provide new one

Q3: What kind of certification you have?
---ISO9001,ISO14001, CE,ROHS,UL,and so on
---All series product pass different labor testing according to different countries’ requirements.

Q4: Delivery time:
---Standard Products could be delivered within 15 days;

Q5. Can I have a sample order?
---Yes, we welcome sample order to test and check quality.

Q6. Do you have any MOQ?
---Yes, we have MOQ for mass production, it depends on the different part numbers. 1~10pcs sample order is available. Low MOQ,1 pc
for sample checking is available.

Q7. Do you support OEM?
---Yes. Please inform us formally before our production and confirm the design firstly based on our sample.