1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your ExpertPower 3240W Solar Power System Kit. This kit includes a 6.5KW Hybrid Solar Inverter with a 120A MPPT Controller and six 540W Bifacial Solar Panels. Please read this manual thoroughly before proceeding with any installation or operation.
2. Safety Guidelines
Adherence to safety precautions is critical to prevent personal injury and damage to the equipment. Installation should only be performed by qualified personnel.
- Electrical Hazard: This system involves high voltage DC and AC electricity. Always disconnect all power sources (solar, battery, grid) before performing any maintenance or installation.
- Grounding: Ensure all components are properly grounded according to local electrical codes.
- Battery Safety: If connecting batteries (not included), follow battery manufacturer's safety guidelines. Batteries can produce explosive gases.
- Weight: The inverter and solar panels are heavy. Use appropriate lifting techniques and equipment during installation.
- Environment: Install the inverter in a well-ventilated area, protected from direct sunlight, rain, and excessive dust.
3. Package Contents
The ExpertPower 3240W Solar Power System Kit includes the following components:
- One (1) ExpertPower 6.5KW Hybrid Solar Inverter with 120A MPPT Controller
- Six (6) ExpertPower 540W Bifacial Solar Panels
Note: Battery, wiring cables, fuses, breakers, connectors, and panel mounting brackets are not included and must be sourced separately.
Image 3.1: Overview of the ExpertPower 3240W Solar Power System Kit components. This image displays the 6.5KW Hybrid Solar Inverter and six 540W Bifacial Solar Panels, illustrating the main components included in the package.
4. System Overview and Features
The ExpertPower Solar Power System is designed for energy independence, integrating solar power with grid and generator sources. The hybrid inverter manages power flow to your home and battery bank.
Image 4.1: Complete System Diagram. This illustration shows how the solar panels, inverter, battery bank, generator, and utility power interact within a residential setup to provide continuous power.
4.1. Key Features
- Hybrid Solar Inverter: 6.5KW pure sine wave AC output (120V), UL1741 standard compliant.
- Integrated MPPT Controller: 120A, 8000W max solar input, supports two 4000W PV inputs (up to 500V open circuit voltage each).
- Bifacial Solar Panels: 540W panels designed to capture sunlight from both sides, increasing energy yield.
- Battery Compatibility: Compatible with various battery types including LiFePO4/Lithium, AGM/SLA, Gel, and Flooded batteries.
- Grid Connection: Allows charging batteries and powering your home from the grid or a generator (no feedback to grid).
- Scalability: Connect up to six inverters in parallel for a total output of 39KW.
- Versatile Design: Supports 120V single-phase, 120V/240V split-phase, and 208V 3-phase configurations.
- Wireless Communication: Monitor your system via the WatchPower Wi-Fi App (registration required).
Image 4.2: Inverter Features. This graphic details the capabilities of the 6.5KW Hybrid Solar Inverter, such as battery compatibility, grid connection options, scalability, flexible settings, versatile design, and wireless communication.
4.2. Bifacial Solar Panel Advantages
The included 540W bifacial solar panels are designed to capture sunlight from both the front and rear surfaces. This design can increase energy production by up to 30% compared to traditional monofacial panels, especially when installed over reflective surfaces.
Image 4.3: Bifacial Solar Panel Operation. This diagram illustrates how bifacial solar panels absorb direct sunlight on their front surface and reflected/diffused sunlight on their rear surface, leading to increased energy generation.
5. Installation Guide
Proper installation is crucial for the safety and performance of your solar power system. It is highly recommended that installation be performed by a certified electrician or solar professional.
5.1. Inverter Physical Installation
The inverter should be mounted vertically on a sturdy wall in a dry, well-ventilated area, away from flammable materials. Ensure adequate clearance around the inverter for proper airflow and heat dissipation.
Image 5.1: Inverter Diagram. This diagram provides detailed views of the inverter, labeling its various components such as function buttons, LCD display, charging/status/fault indicators, power switch, communication ports (RS-232, BMS, USB), AC input/output connectors, PV connectors, and battery connectors.
5.2. Wiring Connections
All wiring must comply with local and national electrical codes. Use appropriately sized cables and circuit breakers for all connections.
- Solar Panel Connection: Connect the solar panels to the PV input terminals on the inverter. Ensure correct polarity and that the total open circuit voltage and current do not exceed the inverter's specifications.
- Battery Connection: Connect the battery bank (not included) to the battery terminals on the inverter. Observe correct polarity. Install a DC circuit breaker between the battery and inverter.
- AC Input Connection: Connect the utility grid or generator AC power to the AC input terminals. Install an AC circuit breaker.
- AC Output Connection: Connect your home's electrical loads to the AC output terminals. Install an AC circuit breaker.
- Grounding: Connect the inverter's grounding terminal to a reliable earth ground.
6. Operating Instructions
Once installed, the inverter can be configured to prioritize different power sources for charging the battery and supplying loads.
6.1. Charging Priority Settings
These settings determine how the battery bank is charged from available power sources.
Image 6.1: Charger Source Priority. This graphic illustrates the three main options for charging the battery bank: prioritizing solar power, using both solar and AC input simultaneously, or exclusively using solar power.
- Solar First: The inverter prioritizes solar power for charging. AC input will only charge the battery bank if solar power is unavailable.
- Solar and AC Input Simultaneously: The inverter charges the battery bank from both solar and AC power concurrently.
- Solar Only: The inverter charges the battery bank exclusively from available solar power, regardless of AC input availability.
6.2. Load Priority Settings
These settings control how your appliances are powered to ensure continuous operation.
Image 6.2: Output Source Priority. This graphic explains the three options for powering loads: prioritizing solar power, prioritizing AC input, or prioritizing DC (battery) power.
- Solar First: The inverter uses solar power to supply loads first. If solar input is insufficient, AC input will compensate.
- AC Priority: The inverter redirects AC input to power all loads. Solar and battery power are used only when AC input is unavailable.
- DC Priority: Prioritizes solar power first. If solar is insufficient, the battery bank supplies power simultaneously. AC input powers on only when the battery voltage drops to a programmable value.
7. Monitoring and Connectivity
The ExpertPower Hybrid Solar Inverter features built-in Wi-Fi for remote monitoring via the WatchPower Wi-Fi App.
7.1. WatchPower Wi-Fi App
Download the WatchPower app from your Android or Apple app store. After registration, you can pair your inverter to monitor its performance, energy generation, battery status, and system alerts from anywhere with an internet connection.
Image 7.1: Wi-Fi Monitoring Interface. This image shows various screens of the WatchPower Wi-Fi App, demonstrating how users can view basic system information, battery mode status, and an energy overview from their mobile device.
8. System Expansion and Configuration
The inverter offers versatile configuration options to meet various power needs, from residential to commercial applications.
8.1. Single-Phase Connection
Up to six inverters can be connected in parallel for a maximum 39KW power delivery in 120V residential systems.
Image 8.1: Single-Phase Parallel Connection. This diagram illustrates how multiple inverters can be connected in parallel to increase the total power output for single-phase systems.
8.2. Split-Phase Connection (120V/240V)
For larger residential or small commercial applications, up to six inverters can be configured for 240V and 120V split-phase systems.
Image 8.2: Split-Phase Connection (Two Inverters). This diagram shows a split-phase configuration using two inverters, with one inverter assigned to each phase (P1 and P2).
Image 8.3: Split-Phase Connection (Six Inverters). This diagram illustrates a larger split-phase setup with six inverters, arranged as two groups of three in parallel, serving phases P1 and P2.
8.3. 3-Phase Connection (208V/240V)
For commercial applications requiring 208V or 240V 3-phase systems, various series-parallel configurations are possible.
Image 8.4: 3-Phase Connection Examples. This diagram presents two common 3-phase configurations: one inverter per phase (P1, P2, P3) and two inverters per phase for increased capacity.
9. Maintenance
Regular maintenance ensures the longevity and optimal performance of your solar power system.
- Solar Panels: Periodically clean the surface of the solar panels to remove dust, dirt, and debris that can reduce efficiency. Inspect for any physical damage.
- Inverter: Keep the inverter's ventilation openings clear of obstructions. Ensure the area around the inverter is clean and free of dust.
- Connections: Annually inspect all electrical connections for tightness and signs of corrosion.
- Batteries (if applicable): Follow the battery manufacturer's maintenance schedule, including checking electrolyte levels (for flooded batteries) and terminal cleanliness.
10. Troubleshooting
This section provides guidance for common issues. For complex problems, contact ExpertPower technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not turning on | No power from battery/solar/grid; main switch off; faulty wiring. | Check all power connections and circuit breakers. Ensure the inverter's power switch is ON. |
| No AC output | Overload; output breaker tripped; inverter fault. | Reduce load. Check AC output breaker. Refer to inverter display for fault codes. |
| Low solar charging | Shaded panels; dirty panels; incorrect PV wiring. | Clear shading. Clean panels. Verify PV connections and voltage. |
| Wi-Fi monitoring not working | No Wi-Fi signal; incorrect app setup; inverter Wi-Fi module issue. | Ensure inverter is within Wi-Fi range. Reconfigure app settings. Contact support if issue persists. |
11. Technical Specifications
11.1. 6.5KW Hybrid Solar Inverter
| Parameter | Value |
|---|---|
| Rated Power | 6500W |
| Input AC Voltage | 120VAC (90-140VAC) |
| Input DC Voltage | 48VDC |
| Output AC Voltage | 120VAC ± 5% |
| Output Surge Power | 13000VA |
| Efficiency | 90% - 93% |
| No Load Power Consumption | <70W |
| Max. PV Array Power | 8000W (4000W x 2) |
| Max. PV Open Circuit Voltage | 500VDC |
| PV Start-Up Voltage | 80VDC |
| Max. PV Input Current | 18A x 2 |
| Item Weight | 40.56 lbs |
| Product Dimensions | 17.03 x 5.80 x 21.80 inches |
11.2. 540W Bifacial Solar Panel
| Parameter | Value |
|---|---|
| Cell Type | Mono PERC 182 mm |
| Maximum Power (Pmax) | 540W |
| Open-Circuit Voltage (Voc) | 49.60V |
| Maximum Power Voltage (Vmp) | 41.64V |
| Short-Circuit Current (Isc) | 13.86A |
| Maximum Power Current (Imp) | 12.97A |
| Module Efficiency | 21.00% |
| Maximum System Voltage | 1500V DC(IEC) |
| Maximum Series Fuse Rating | 30A |
| Mechanical Load Front/Rear | 5400Pa / 2400Pa |
| Item Weight | 68.3 lbs |
| Product Dimensions | 89.68 x 44.6 x 1.37 inches |
12. Contact and Support
For technical assistance, warranty inquiries, or further information, please contact ExpertPower customer support through their official website or the contact details provided with your purchase.
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