SRNE ASP Series Hybrid Pure Sine Wave Solar Power Inverter User Manual

1. Introduction

This manual provides essential information for the safe and efficient operation of your SRNE ASP Series Hybrid Pure Sine Wave Solar Power Inverter. This inverter is designed for off-grid solar storage systems, integrating solar charging, battery storage, and AC output functionalities. Please read this manual thoroughly before installation and use.

Key Features:

• Designed for use with 48V energy storage batteries (Li-ion/Lead-acid /User-defined).
• Equipped with two efficient independent MPPT (Maximum Power Point Tracking) ports.
• Offers two output modes: mains bypass output and inverter output, ensuring uninterrupted power supply.
• Supports time-sharing charge and discharge functions for optimized energy management.
• Capable of parallel operation with up to 6 units, achieving a maximum output of 39kW.
• Provides pure sine wave output for sensitive electronics.

2. Safety Instructions

Always observe the following safety precautions to reduce the risk of electric shock, fire, or injury:

• Installation must be performed by qualified personnel.
• Ensure the inverter is installed indoors only, as it has an IP20 protection degree.
• Do not disassemble the inverter. There are no user-serviceable parts inside.
• Keep the inverter away from flammable materials and ensure adequate ventilation.
• Verify all connections are secure and correctly polarized before powering on.
• Do not operate the inverter if it is damaged or appears to be malfunctioning.

3. Product Overview

3.1. Inverter Components

The SRNE ASP Series inverter features a user-friendly interface and robust connection points. Below are images illustrating the device from various angles, including the crucial back panel with all input/output terminals.

Figure 1: Front View of the Inverter

Figure 2: Right Side View

Figure 3: Left Side View

Figure 4: Back Panel with Connection Ports

The back panel (Figure 4) provides access to all necessary connections for integrating the inverter into your solar power system. These include terminals for Grid input, Load output, Generator input, PV (solar panel) input, Battery connection, and various communication ports (USB, CT, WiFi, RS485, CAN, Dry Contact) for monitoring and control. An ON/OFF switch is also located on the back panel.

4. Setup and Installation

4.1. Mounting the Inverter

• Choose a dry, well-ventilated indoor location, away from direct sunlight and heat sources.
• Ensure the mounting surface is strong enough to support the inverter's weight (approx. 18.9kg).
• Allow sufficient clearance around the inverter for proper airflow and cooling.
• Mount the inverter vertically using appropriate fasteners.

4.2. Wiring Connections

Refer to Figure 4 (Back Panel) for the location of all connection terminals. All wiring must comply with local electrical codes and standards.

1. Battery Connection (BAT): Connect the 48V battery bank to the designated BAT terminals. Ensure correct polarity. The inverter supports Li-ion, Lead-acid, and user-defined battery types.
2. PV Input (PV): Connect your solar panel array to the PV input terminals. The inverter has two independent MPPT ports. Ensure the PV open circuit voltage and current are within the specified ranges (Max. Open Circuit Voltage: 550Vdc+550Vdc, Max. Input Current: 18A+18A, MPPT Voltage Range: 150~450Vdc).
3. Grid/Generator Input (GRID/GEN): Connect the utility grid or a compatible generator to the GRID/GEN input terminals. Input voltage range is 65~140Vac, with a frequency range of 50/60Hz.
4. Load Output (LOAD): Connect your household loads or electrical panel to the LOAD output terminals. The rated output voltage is 120Vac (single-phase) or 240Vac (split-phase).
5. Parallel Connection: If using multiple inverters in parallel (up to 6 units), follow the specific instructions for parallel wiring. More than 3 units in parallel can form a three-phase output.
6. Communication Ports (USB, CT, WiFi, RS485, CAN, Dry Contact): Connect external monitoring devices, current transformers (CT), or optional Wi-Fi/GPRS modules as required for system management and data logging.

Important: Always ensure the inverter is switched OFF before making any electrical connections. Double-check all wiring for correctness and tightness to prevent damage or hazards.

5. Operating Instructions

5.1. Powering On/Off

1. To Power On:
   • Ensure all wiring connections are secure.
   • Turn on the battery breaker.
   • Turn on the PV array breaker (if applicable).
   • Turn on the AC input breaker (Grid/Generator, if applicable).
   • Switch the inverter's ON/OFF button to the 'ON' position. The display will light up, and the inverter will begin its startup sequence.
2. To Power Off:
   • Switch the inverter's ON/OFF button to the 'OFF' position.
   • Turn off the AC input breaker (Grid/Generator).
   • Turn off the PV array breaker.
   • Turn off the battery breaker.
   • Wait for the display to completely shut down.

5.2. Operating Modes and Functions

The inverter offers various operating modes and customizable functions accessible via its display and control buttons. These include:

• Mains Bypass Output: When the grid or generator is available, the inverter can bypass its internal conversion and directly supply power to the loads.
• Inverter Output: When the grid is unavailable or when prioritizing solar/battery power, the inverter converts DC power from the battery/PV array to AC power for the loads.
• Time-Sharing Charge and Discharge: This function allows you to program specific times for charging the battery from the grid/PV and discharging the battery to power loads, optimizing energy usage and potentially reducing electricity costs. Refer to the detailed settings in the inverter's menu for configuration.
• Monitoring: The display provides real-time information on input/output voltage, current, power, battery status, and system errors.

6. Maintenance

Regular maintenance ensures the longevity and optimal performance of your inverter.

• Cleaning: Periodically clean the exterior of the inverter with a dry, soft cloth. Ensure ventilation openings are free from dust and debris. Do not use liquid cleaners.
• Connections: Annually check all electrical connections for tightness and signs of corrosion.
• Environment: Ensure the operating environment remains within the specified temperature range (-10°C to 55°C) and that the inverter is protected from moisture and direct sunlight.
• Firmware Updates: Check the manufacturer's website for any available firmware updates to ensure your inverter has the latest features and bug fixes.

7. Troubleshooting

This section provides basic troubleshooting steps for common issues. For more complex problems, contact technical support.

8. Specifications

9. Warranty and Support

9.1. Warranty Information

The SRNE ASP Series inverter comes with a 2-year warranty. Other SRNE products may have different warranty periods (e.g., IP65 inverters have a 5-year warranty, IP65 batteries have a 10-year warranty, and accessories have a 1-year warranty). Please retain your proof of purchase for warranty claims.

9.2. Technical Support

For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact your vendor or SRNE customer service. Ensure you have your product model number and purchase details ready.

10. User Tips

• Optimal Battery Use: Utilize the time-sharing charge and discharge function to maximize battery life and efficiency, especially if you have variable electricity rates.
• Monitoring: Connect optional Wi-Fi/GPRS modules to remotely monitor your system's performance and receive alerts.
• Parallel Systems: If expanding your system with parallel inverters, ensure all units are compatible and configured correctly by a professional to achieve desired output (e.g., three-phase output with more than 3 units).