This video explains the step-by-step installation of a home solar energy storage system using a 300Ah 48V battery paired with a three-phase inverter. This type of system is ideal for homeowners who want reliable backup power, lower electricity bills, or full energy independence through solar energy.
System Components
The video highlights several key components required for setting up the system:
1. 300Ah 48V Battery
This large battery pack provides approximately 14.4 kWh of stored energy, enough to power essential household loads for several hours during outages.
2. Three-Phase Inverter
A 3-phase inverter converts the DC power from the battery into AC power, suitable for homes or workshops that operate on three-phase electrical systems. It ensures stable power delivery to all phases.
3. Solar Charge Controller (MPPT)
If the system uses solar panels, an MPPT controller regulates charging efficiency and protects the battery from overcharging.
4. Protection Devices
Circuit breakers, fuses, surge protection devices (SPD), and proper grounding ensure safe and stable operation.
5. Connection Cables and Distribution Board
Proper sizing of DC and AC cables is essential for safety and efficient power transfer.
Installation Steps
The video demonstrates the main steps of assembling and wiring the system:
1. Selecting Installation Locations
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The battery should be placed in a dry, well-ventilated area.
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The inverter must be mounted on a firm wall away from heat and moisture.
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Solar panels (if installed) should be placed to receive maximum sunlight.
2. Connecting the Battery to the Inverter
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The 300Ah battery is connected to the inverter’s DC input (48V).
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Strong, thick cables are used due to the high current needed.
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A DC circuit breaker is installed for added protection.
3. Wiring the Solar Panels (If Applicable)
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Solar panels are connected in series or parallel depending on the inverter’s MPPT voltage range.
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A DC breaker or isolator is used between the panels and the MPPT input.
4. Connecting the Three-Phase Output
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The inverter’s 3-phase AC output is connected to the distribution board (L1, L2, L3, Neutral).
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Loads should be balanced across the three phases to avoid overloading one side.
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Safety devices such as AC breakers and SPD are added.
5. Grounding and Safety Checks
Proper grounding is essential to protect the system from surges, electrical faults, and lightning. The installer performs a full safety inspection before powering on the system.
Benefits of This System
1. High Energy Storage Capacity
A 14.4 kWh battery can support essential appliances such as lighting, refrigeration, and communication devices during power outages.
2. Suitable for Three-Phase Homes
Many homes and workshops rely on three-phase power. A 3-phase inverter ensures smooth and balanced power distribution.
3. Lower Electricity Bills
When paired with solar panels, this system can significantly reduce dependency on the grid.
4. Reliable Backup Power
Ideal for regions with frequent power outages or unstable grid supply.
Safety Warning
While the video provides an excellent demonstration, installing a 48V system with a three-phase inverter requires electrical expertise. Incorrect wiring can result in fire hazards or electric shock. It is strongly recommended to have a licensed electrician or professional solar installer handle the installation.
Conclusion
The video offers a clear and practical look at installing a 300Ah 48V home energy storage system with a three-phase inverter. Such systems provide powerful backup capabilities and can greatly improve energy independence. With proper installation and safety measures, homeowners can enjoy stable, clean, and efficient energy for years to come.