1. Introduction
This document serves as the instruction manual for the EASUN POWER Solar Hybrid Inverter 5.5KW. It is a multi-function inverter/charger, combining the capabilities of an inverter, an MPPT solar charger, and a battery charger. Designed to provide uninterruptible power support, it features a portable size and a comprehensive LCD display for user-configurable and easy-accessible button operation. Users can adjust settings such as battery charging current, AC/solar charger priority, and acceptable input voltage based on different application requirements.
2. Key Features
- Pure sine wave solar inverter output.
- Output power factor of 1.
- High PV input voltage range.
- Built-in MPPT solar controller.
- Battery equalization function to optimize battery performance and extend lifecycle.
- Capable of inverter operation without a battery.
- Built-in anti-dusk kit for harsh environments.
- WIFI-GPRS remote monitoring (Optional).
- Detachable LCD (Optional).
- Supports parallel operation of up to 12 units.
- Supports BMS communication.
3. Product Overview
The EASUN POWER Solar Hybrid Inverter is designed for efficient and reliable power conversion. Below are images illustrating the product's appearance and key components.
Figure 3.1: Front view of the EASUN POWER Solar Hybrid Inverter.
Figure 3.2: Front panel highlighting key features like 5.5KW rated power, 48V battery voltage, 100A max solar charge current, 60A max AC charge current, 5500W max PV array power, 500VDC max PV array voltage, and parallel operation up to 12 units.
Figure 3.3: Product overview displaying front, side, and back views, including the parallel communication port.
4. Setup and Installation
4.1 System Diagram
The inverter can be integrated into various solar power systems, with or without battery storage. Refer to the diagrams below for typical system configurations.
Figure 4.1: General system diagram illustrating connections between solar power, generator, utility grid, battery packs, and household loads, with GPRS/WiFi monitoring options.
Figure 4.2: System operation diagrams for configurations with and without external battery packs connected.
4.2 PV Connection Guidelines
When selecting and connecting PV modules, observe the following critical parameters:
Figure 4.3: PV connection diagram and module selection parameters.
- Open circuit Voltage (Voc) of PV modules must not exceed the maximum PV array open circuit voltage of the inverter (500VDC).
- Open circuit Voltage (Voc) of PV modules should be higher than the minimum battery voltage.
For the ISolar SMG II 5.5KP model, consider the following PV module parameters:
| Parameter | Value / Description |
|---|---|
| Maximum output power | 5500W |
| Maximum PV open circuit voltage | 500VDC |
| Maximum charge current | 100A |
| Maximum Power (Pmax) | 250W (Max. PV module numbers in series: 11 x 36V ≈ 60~500VDC) |
| Max. Power Voltage Vmpp(V) | 36V |
| Max. Power Current Impp(A) | 8.3A (PV module numbers in parallel: 11 x 8.3 < 100A) |
| Open Circuit Voltage Voc(V) | 40V (Total PV module numbers: 2 x 11 = 22) |
| Short Circuit Current Isc(A) | 8.9A |
4.3 Physical Connections
Identify and connect the cables to the appropriate ports on the inverter's back panel as shown below:
Figure 4.4: Back panel connections.
- AC Input
- AC Output
- PV Input
- Battery Input
- Dry Contact
- Power On/Off Switch
- Circuit Breaker
- USB Communication Port
- Grounding Terminal
- RS232 Communication Port
4.4 Parallel Operation
The inverter supports parallel operation for increased capacity, allowing up to 12 units to work together in single-phase or three-phase configurations. Ensure proper wiring and communication connections for parallel systems.
Figure 4.5: Parallel operation power connection diagrams for single-phase (up to 12 units) and three-phase (up to 9 units shown) systems.
5. Operating Instructions
5.1 LCD Display and Indicators
The inverter features an LCD display, LED indicators, and function keys for monitoring and configuration.
Figure 5.1: LCD display, LED indicators, and function keys.
LED Indicators:
| Indicator | Color | State | Message |
|---|---|---|---|
| AC / INV | Green | Solid On | Output is powered by utility in Line mode. |
| AC / INV | Green | Flashing | Output is powered by battery or PV in battery mode. |
| CHG | Green | Solid On | Battery is fully charged. |
| CHG | Green | Flashing | Battery is charging. |
| FAULT | Red | Solid On | Fault occurs in the inverter. |
| FAULT | Red | Flashing | Warning condition occurs in the inverter. |
Function Keys:
| Key | Description |
|---|---|
| ESC | To exit setting mode. |
| UP | To go to previous selection. |
| DOWN | To go to next selection. |
| ENTER | To confirm the selection in setting mode or enter setting mode. |
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your EASUN POWER Solar Hybrid Inverter. Perform the following checks periodically:
- Cleaning: Keep the inverter's exterior clean and free from dust and debris. Ensure ventilation openings are unobstructed.
- Connections: Periodically check all electrical connections (AC input/output, PV input, battery input) for tightness and signs of corrosion. Loose connections can lead to overheating or poor performance.
- Environment: Ensure the inverter is operating within its specified temperature and humidity ranges. Avoid exposing it to direct sunlight, rain, or excessive moisture.
- Battery Health: If using batteries, monitor their health and charge status. Ensure battery equalization is functioning correctly to extend battery life.
- Firmware Updates: Check the manufacturer's website for any available firmware updates that may improve performance or add new features.
Always disconnect all power sources (PV, AC, Battery) before performing any maintenance or cleaning to prevent electric shock.
7. Troubleshooting
If you encounter issues with your inverter, refer to the LED indicator messages in Section 5.1. Here are some general troubleshooting steps:
- No Power/No Display: Check AC input, battery connections, and ensure the power switch is ON. Verify the circuit breaker is not tripped.
- Fault Indicator (Red Solid On): This indicates a fault. Consult the detailed error codes in the full manual (if available) or contact technical support.
- Warning Indicator (Red Flashing): This indicates a warning condition. Check for conditions like high temperature, overload, or low battery voltage. Address the underlying cause.
- No Solar Charging: Verify PV panel connections, ensure PV voltage is within the MPPT range, and check for shading on panels.
- Overload Protection: If the inverter shuts down due to overload, reduce the connected load and restart the inverter.
For complex issues or persistent problems, it is recommended to contact qualified technical support.
8. Specifications
Detailed technical specifications for the ISolar SMG II 5.5KP WIFI model:
| MODEL: SMG II 5.5KP WIFI | |
|---|---|
| CAPACITY | |
| Capacity | 5.5KVA/5.5KW |
| Parallel Capability | Yes, 12 units |
| INPUT | |
| Nominal Voltage | 230VAC |
| Acceptable Voltage Range | 170-280VAC (For personal Computer); 90-280VAC (For Home Appliances) |
| Frequency | 50/60Hz (Auto sensing) |
| OUTPUT | |
| Nominal Voltage | 220/230VAC±5% |
| Surge Power | 11000VA |
| Frequency | 50/60Hz |
| Waveform | Pure Sine Wave |
| Transfer Time | 10Ms (For personal Computer); 20Ms (For Home Appliances) |
| Peak Efficiency (PV to INV) | 96% |
| Peak Efficiency (Battery to INV) | 93% |
| Overload Protection | 5s@>=150%load; 10s@110%-150%load |
| Crest Factor | 3:1 |
| Admissible Power Factor | 0.6-1 (inductive or capacitive) |
| BATTERY | |
| Battery Voltage | 48VDC |
| Floating Charge Voltage | 54VDC |
| Over Charge Protection | 63VDC |
| Charging Method | CC/CV |
| SOLAR CHARGER & AC CHARGER | |
| Solar Charger Type | MPPT |
| Max. PV Array Power | 5500W |
| Max. PV Array Open Circuit Voltage | 500VDC |
| PV Array MPPT Voltage Range | 120VDC - 450VDC |
| Max. Solar Input Current | 18A |
| Max. Solar Charge Current | 100A |
| Max. AC Charge Current | 60A |
| Max. Charge Current | 100A |
| PHYSICAL | |
| Dimensions (DxWxH) | 482x290x113mm |
| Package Dimensions (DxWxH) | 565x380x190mm |
| Net Weight | 10 Kgs |
| Communication Interface | USB/RS232/RS485 Dry-contact |
| ENVIRONMENT | |
| Operating Temperature Range | -10°C to 50°C |
| Storage Temperature | -15°C to 60°C |
| Humidity | 5% to 95% Relative Humidity (Non-condensing) |
9. User Tips
- Optimal PV Sizing: Ensure your PV array is correctly sized to match the inverter's input voltage and current capabilities for maximum efficiency.
- Battery Compatibility: Use batteries that are compatible with the inverter's 48VDC system and support the charging methods (CC/CV) and equalization features.
- Monitoring: Utilize the optional WIFI-GPRS remote monitoring feature to keep track of your system's performance and status from anywhere.
- Ventilation: Always ensure adequate airflow around the inverter to prevent overheating, especially during high load operation.
- Grounding: Proper grounding is crucial for safety and system stability. Ensure the grounding terminal is correctly connected.
10. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation provided with your purchase or contact EASUN POWER directly through their official channels. Keep your purchase receipt and product serial number handy when contacting support.
