3000W 12V low frequency pure sine wave off-grid inverter (peak power 9000W)

A 3000W 12V low-frequency, pure sine wave inverter is equipped with a 90A battery charger and has a peak power level of 9000W. 

An inverter is a device that converts battery output (DC, or direct current) into 230V AC mains electricity (alternating current). This type of electricity is what utility companies provide to power standard domestic appliances such as TV, fridge, radio, lights, or to charge a laptop or mobile phone. If you have a battery, connecting a power inverter will enable you to power household appliances in areas with no access to mains electricity, like in a motorhome, caravan, boat, farm, or any other remote location. Inverters are also useful for off-grid and backup systems during power outages. 

This pure sine wave inverter produces a 230V AC output that harmonically follows a smooth sine wave and is almost identical to normal mains electricity. Pure sine wave output is far superior to square sine wave or modified sine wave output for running appliances. This is because:

- It is suitable for a broader range of appliances compared to modified sine wave inverters, which cannot power appliances with electric motors.

- It is more efficient compared to modified sine wave inverters. 

A low-frequency inverter operates using transformers (as opposed to electronic components such as MOSFETs for high-frequency inverters), making it stronger, sturdier, and less prone to damage than higher frequency inverters. It can operate at a peak power level of up to 300% of its nominal power level for several seconds, while high-frequency inverters can only operate at 200% of nominal power for a fraction of a second. 

Key features of this inverter include:

- A fast built-in battery charger with charging current options ranging from 18A to 90A, advanced 4-step progressive charging, and several battery types to choose from. 

- Option to select either DC or AC priority mode. 

    - AC priority mode: When the inverter is connected to the mains, batteries will be constantly charged by mains power until fully charged. Appliances will also be powered by mains by default. 

    - DC priority mode: Appliances will always be powered by the batteries, even if the mains input is connected.

Certainly! Here's a revised version of the text for clarity and correctness:

Please note the following details for the inverter:

- When the battery charge falls below a certain threshold, the mains input will automatically start charging the batteries and powering appliances.

- The inverter has a power saving mode, which allows it to work in "power on demand" standby mode, generating power only when a load is connected, saving energy and battery power.

- It features a UPS (Uninterrupted Power Supply) system, providing constant power for appliances when the inverter is working in AC (mains) mode and the mains power supply shuts down. The inverter will automatically switch to the battery to prevent appliances from switching off.

- The bypass mode is activated when the mains power is connected in AC priority mode. In this mode, the AC mains input is automatically linked to the AC output of the inverter, bypassing the DC-to-AC energy converting circuits, increasing efficiency and making the quality of the AC output equivalent to the AC input.

- The inverter has a detailed LCD display that shows voltages, battery status, current operating mode, and other information.

- It can accept input AC power from a generator, with a recommended nominal power of the generator at least twice the rated power of the inverter.

- Various settings allow the user to customize the inverter, including output voltage, output frequency, input voltage thresholds, and battery type and capacity.

- With a 3000W nominal power and 9000W peak power ratings, the inverter is suitable for most household appliances, except for a cooker, such as a fridge, microwave, TV, power tools, vacuum cleaner, and kitchen appliances.

- The inverter also features important protection and safety features, including overload, over-temperature, low battery, and overcharge protection.

Specifications:

- Input: 12V DC

- Output voltage: 208V / 220V / 230V / 240V (programmable in settings)

- Output frequency: 50Hz / 60Hz / auto (programmable in settings)

- Output wave: pure sine wave

- Input voltage range: normal or wide (programmable in settings)

- Battery bank type: sealed lead acid, gel, agm, calcium (programmable in settings)

- Battery charging current options: 18A / 36A / 54A / 72A / 90A (programmable in settings)

- Power rating: 3000W nominal, 9000W peak

- Nominal inverter efficiency: 88%

- Power saving mode, UPS, and bypass mode

- AC / DC priority mode

- Minimum battery voltage: 10V

- Low battery alert: 10.5V

- Protection against: overload, overheat, low battery, overcharge

- Overcharge protection voltage: 15.7V

- Power Factor: 0.9-1.0

- Operating temperature range: 0 - 40°C

- Weight: 26 kg

- Size: 44.2 x 21.8 x 17.9 cm

- This product comes with a 1-year manufacturer warranty and a detailed user manual, which explains wiring, installation, and operation. Please note that it has AC power screw terminals instead of mains power sockets. This means it can be connected to one or several AC mains power sockets using suitable AC cables. In the UK, 3-pin UK type mains sockets can be used, and in Europe, it can be connected to standard European mains sockets. Also note that the inverter is not supplied with cables, but detailed recommendations for cable length and thickness are available in the user manual. If you need help with installation or have any technical questions, feel free to get in touch with us by email or phone for free support.