An inverter is a device that converts the direct current (DC) output from a battery into 230V alternating current (AC) electricity, which is the type of electricity supplied by utility companies to power standard domestic appliances like TVs, fridges, radios, lights, and to charge laptops or mobile phones. By connecting a power inverter to a battery, you can power household appliances in areas with no access to mains electricity, such as in a motorhome, caravan, boat, farm, or any other remote location. Inverters are also useful for off-grid and backup systems during power cuts.

The inverter mentioned is a low-frequency, pure sine wave type, which means that its 230V AC output follows a smooth sine wave and is almost identical to normal mains electricity. This type of output is superior for running appliances because it is suitable for a broader range of appliances and is more efficient compared to other types of inverters, such as square sine wave or modified sine wave inverters.

A low-frequency inverter has several advantages compared to higher frequency inverters. It can operate at a peak power level of up to 300% of its nominal power level for several seconds, while higher frequency inverters can only operate at 200% of nominal power for a fraction of a second. Low-frequency inverters operate using transformers, resulting in a stronger and sturdier inverter that is less prone to damage compared to higher frequency inverters that use electronic components like MOSFETs.

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Key features include:

- A fast built-in battery charger with charging current options ranging from 7A to 35A to charge your batteries from mains. It has advanced 4-step progressive charging and supports several battery types.

- The battery charger can be permanently switched off if it is not required.

- Option to select either DC or AC priority mode.

- In AC priority mode, if 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.

- In DC priority mode, appliances will always be powered by the batteries, even if the mains input is connected. Once the battery charge drops below a certain threshold, mains input will automatically kick in to charge batteries and power appliances.

- Power saving mode allows the inverter to work in "power on demand" standby mode by only generating power when load is connected, saving energy and battery power.

- UPS (Uninterrupted Power Supply) system provides constant power for your appliances when the inverter is working in AC (mains) mode and mains power supply shuts down. The inverter will automatically switch to the battery and your appliances will not switch off.

- Bypass mode is available when the mains power is connected (in AC priority mode). In this mode, the AC mains input is automatically linked to AC output of the inverter, therefore bypassing the DC-to-AC energy converting circuits of the unit, increasing the efficiency and making the quality of the AC output the same as AC input.

- Detailed LCD display which shows voltages, battery status, current operating mode, and other information.

- Ability to accept input AC power from a generator (recommended nominal power of the generator is twice the rated power of the inverter).

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

- The 3000W nominal power and 9000W peak power ratings make this inverter suitable for most household appliances (such as fridge, microwave, TV, power tools, vacuum cleaner, and kitchen appliances except a cooker etc).

- This inverter also features important protection and safety features, such as overload, over-temperature, low battery, and overcharge protection.

Specifications:

- Input: 48V 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: 7A / 14A / 21A / 28A / 35A (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: 40V

- Low battery alert: 42V

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

- Overcharge protection voltage: 62.8V

- Power Factor: 0.9-1.0

- Operating temperature range: 0 - 40C

- Weight: 26 kg

- Size: 44.2 x 21.8 x 17.9 cm

- This product is covered by a 1-year manufacturer warranty.

- This inverter comes with a detailed user manual (see Documents tab) which explains wiring, installation, and operations.

- Please note that this inverter has AC power screw terminals instead of mains power sockets, which 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 this inverter is not supplied with cables. Detailed recommendations for cable length and thickness are available in the user manual.

- If you need help with installation or have any technical questions, we can provide FREE support. Please get in touch with us by email or phone.

- The following documents are available to download: User manual for 3000W 48V pure sine wave low-frequency inverter with charger.

3000W 48V low frequency pure sine wave off-grid inverter (peak power 9000W)