6kW 48V Parallel Off Grid Solar Inverter

The 6kW 48V Parallel Off Grid Solar Inverter (GPEO-6KL1) offers a cost-effective entry point into off-grid energy storage. Weighing only 12.4kg and measuring 12cm in thickness, it can be wall-mounted by a single person. It is ideal for residential balconies, rural self-built homes, or small studios—particularly in scenarios requiring three-phase power but with moderate load demands.

Its 6kW rated power easily handles daily loads such as lighting, refrigerators, and computers. It supports parallel connection of up to 12 single-phase units (totaling 72kW) or a configuration of 3 units into a 380V three-phase system (totaling 18kW), capable of driving three-phase water pumps or small machine tools.

It features a single-channel wide-voltage MPPT input (85–450V) and a maximum charging current of 120A; when paired with a 48V lithium battery, it achieves a peak efficiency of 98%. With IP54 protection and a 10ms UPS switchover time, this economical off-grid solution ensures safety, stability, and peace of mind.

Thanks to intelligent parallel technology, up to 12 units can be connected in parallel (72kW total), and 3 or more units can form a 380V three-phase system, allowing for flexible power and phase expansion while achieving 98.0% peak efficiency and 99.9% MPPT efficiency.

Key Features

1. Lightweight and Portable

With a net weight of only 12.4kg and a thickness of 12cm, a single person can handle transport and wall mounting. 6kW 48V Parallel Off Grid Solar Inverter is suitable for space-constrained environments such as homes, apartments, and garages.

2. Cost-Effective Off-Grid Core

Optimized for cost-efficiency while ensuring a stable 6kW output, this unit comes with a 3-year warranty. It is the ideal choice for implementing economical "PV + Energy Storage" solutions in remote areas, rural self-built homes, and small shops.

3. Intelligent Parallel Operation & Three-Phase Networking

Single-phase expansion: Up to 12 units can be connected in parallel for a total power of 72kW, meeting the needs of households requiring gradual capacity upgrades.

Three-phase system: Supports parallel connection of 3 or more units to form a 380V three-phase system (6kW per phase, 18kW total), capable of directly powering industrial loads such as three-phase water pumps, air conditioners, and small machine tools.

4. Wide MPPT Input Range

Single MPPT channel (supporting 2 strings) with an operating voltage range of 85V–450V and a startup voltage of just 85V; compatible with strings of 8–10 standard PV panels. Features a maximum input current of 27A and a short-circuit current of 35A, ensuring compatibility with a wide range of PV modules.

5. Intelligent BMS Communication

Built-in RS485 interface enables real-time communication with mainstream 48V lithium battery BMS (compatible with protocols such as Pylontech), automatically managing charge/discharge parameters to extend battery lifespan.

6. Rapid UPS Switching

UPS mode features a switching time of just 10ms, ensuring uninterrupted power for critical loads like computers, surveillance systems, and medical equipment. Home appliance mode offers a 20ms switching time, accommodating a wider range of grid voltage fluctuations.

Product Parameter

Applicable Scenarios

1. Residential Off-Grid/Backup Power

Suitable for rural self-built homes, mountain cabins, and balcony energy storage systems in urban apartments. Solar power supplies electricity and charges the battery during the day, while the battery automatically takes over at night or during power outages.

2. Small Businesses and Studios

Provides 6kW of base power for small supermarkets, hair salons, studios, and courier pickup points, supporting the stable operation of equipment such as computers, lighting, freezers, and printers.

3. Three-Phase Power Loads

Three units can be paralleled to form a 380V three-phase system capable of driving three-phase deep-well pumps, small air compressors, woodworking machinery, and more, meeting the power needs of agricultural irrigation and small processing plants.

4. Outdoor Activities and Emergency Power

When paired with a mobile battery pack and PV panels, 6kW 48V Parallel Off Grid Solar Inverter serves as a temporary power source for campsites and emergency response sites; its lightweight design facilitates easy transport and rapid deployment.

Customization Services

KTAC offers OEM/ODM services for the GA Series inverter, including:

1. Custom enclosure color and logo printing

2. BMS protocol tuning for third-party batteries

3. Parameter presets (e.g., charge voltages, output frequency)

4. Packaging design and multilingual user manuals

Contact our technical team for a tailored solution.

FAQ

1. What are the main differences between the GPEO-6KL1 and GPEO-12KL1?

The 6KL1 has a power output of 6kW, is lighter (12.4kg vs. 28.5kg), and is more compact, making it suitable for single-person installation and space-constrained environments.

The 12KL1 has a power output of 12kW and higher efficiency (99.9% vs. 98.0%), though it comes with higher costs and weight.

Both models support multi-unit parallel connection and three-phase networking.

2. How do three 6KL1 units form a 380V three-phase system?

Connect the three inverters using synchronization communication cables and configure them as Master (L1), Slave 1 (L2), and Slave 2 (L3) respectively. Each phase outputs 6kW with a line voltage of 380V/400V, resulting in a total power of 18kW. This setup is suitable for driving loads such as three-phase motors and water pumps.

3. What is the maximum number of units that can be paralleled for single-phase operation? What is the total power?

Up to 12 units can be paralleled, providing a total power of 72kW. Parallel operation requires the use of current-sharing communication cables and ensures that the battery pack capacity for each inverter is matched.

4. Can the 6KL1 and 12KL1 be mixed in a parallel configuration?

No. When connecting in parallel or networking, inverters must be of the same model and software version; otherwise, circulating currents and power imbalances may occur.

5. What battery capacity is required?

A battery capacity of at least 5kWh (approximately 100Ah @ 48V) is recommended to support 6kW full-load operation for 0.8 hours. For daily backup power, 10–20kWh is more practical. The inverter has a maximum charging current of 120A and is compatible with 100–300Ah LiFePO4 batteries.

6. If there is only one MPPT channel, how can PV panels facing different directions be connected?

Two strings of PV panels facing different directions can be connected in parallel to the same MPPT (ensuring voltage and current limits are not exceeded), or external optimizers can be used. For more complex systems, a dual-MPPT model (such as the 12KL1) is recommended.