SRNE SPI 4-6.5K-UP Series Off-Grid Solar Inverter

1. Introduction

The SRNE SPI 4-6.5K-UP series is a versatile and intelligent off-grid solar inverter designed for various applications, including residential, agricultural, and telecommunications. This inverter features advanced MPPT technology, dual MPPT trackers, and supports both lithium-ion and lead-acid battery types. Its robust design ensures high efficiency, reliability, and comprehensive safety for your solar power system.

Key Features:

• Advanced MPPT technology with up to 99.9% efficiency.
• High PV input current capacity (up to 18+18A).
• Comprehensive hardware and software security with multiple safety approvals.
• High charging current (up to 140A).
• Support for Li-ion battery BMS communication and dual activation.
• Outputs high-quality pure sine wave AC power.
• Scalable with up to 6 units in parallel connection.
• Industrial design for modern aesthetics and ease of use.
• Time-slot function for optimized energy management and cost savings.

2. Setup and Installation

The SRNE SPI 4-6.5K-UP inverter is designed for easy installation. Ensure all safety precautions are followed before beginning installation.

2.1 Unpacking and Inspection

Upon receiving your inverter, carefully unpack it and inspect for any signs of damage during transit. Ensure all components listed in the packing list are present.

2.2 Mounting the Inverter

Choose a suitable location for mounting the inverter. The location should be well-ventilated, protected from direct sunlight and moisture, and allow for sufficient clearance around the unit for cooling. The inverter has an IP65 protection rating, but it is recommended for indoor use or protected outdoor environments.

2.3 Electrical Connections

All electrical connections should be performed by a qualified electrician in accordance with local electrical codes and regulations.

1. Battery Connection: Connect the 48 VDC battery bank (Lithium-ion, Lead-acid, or Gel) to the BAT terminals. Ensure correct polarity. The inverter supports Li-ion battery BMS communication.
2. PV Input Connection: Connect your solar PV array to the PV input terminals. The inverter features dual MPPT trackers. Ensure the PV array voltage and current are within the specified limits (Max. Open Circuit Voltage 550Vdc+550Vdc, MPPT Voltage Range 150-450Vdc).
3. AC Output (LOAD) Connection: Connect your household loads to the LOAD terminals. The inverter provides 120/240Vac single-phase/split-phase output.
4. Grid Connection (if applicable): Connect to the utility grid at the GRID terminals.
5. Generator Connection (if applicable): Connect a generator to the GEN terminals for backup power.
6. Communication Interfaces: Utilize the embedded RS485/CAN/USB/dry contact interfaces for monitoring and control. Optional Wi-Fi/GPRS modules are available for external communication.

2.4 Parallel Connection

The SPI 4-6.5K-UP series supports parallel connection of up to 6 units to increase overall system capacity. Refer to the detailed wiring diagrams in the full technical manual for specific instructions on parallel configurations.

3. Operating Instructions

Once installed and connected, the inverter can be powered on and configured for operation.

3.1 Powering On

1. Ensure all connections are secure and correct.
2. Switch on the battery breaker.
3. Switch on the PV array breaker.
4. Switch on the AC output breaker (LOAD).
5. Finally, switch on the inverter's main power switch.

The inverter's display will illuminate, showing system status and parameters.

3.2 Monitoring and Configuration

The integrated display provides real-time information on PV input, battery status, AC output, and system faults. Use the navigation buttons to browse through different menus and adjust settings as needed. The inverter outputs high-quality pure sine wave AC power at 110/120V and 50/60Hz.

3.3 Charging Functionality

The inverter manages battery charging from both the PV array and an optional AC source (grid or generator). It supports a maximum hybrid charging current of up to 140A, ensuring efficient and rapid battery replenishment.

3.4 Time-Slot Function

Utilize the time-slot function to program the inverter's operation based on peak and off-peak electricity rates, optimizing energy usage and reducing costs.

4. Maintenance

Regular maintenance ensures the longevity and optimal performance of your SRNE SPI 4-6.5K-UP inverter.

4.1 Routine Checks

• Periodically inspect all electrical connections for tightness and signs of corrosion.
• Ensure the inverter's cooling vents are clear of dust and debris. The intelligent fan cooling system requires unobstructed airflow.
• Check the display for any error codes or warnings.
• Monitor battery health and ensure proper charging cycles.

4.2 Cleaning

Clean the exterior of the inverter with a soft, dry cloth. Do not use liquid cleaners or solvents. Ensure the unit is powered off before cleaning.

5. Troubleshooting

This section provides general guidance for common issues. For complex problems, please contact technical support.

Common Issues:

• No Power Output: Check battery connections, PV input, and AC output breakers. Ensure the inverter is powered on.
• Low Power Output: Verify PV array performance, battery charge level, and load requirements.
• Error Codes on Display: Refer to the detailed error code list in the comprehensive technical manual for specific diagnostics and solutions.
• Overheating: Ensure adequate ventilation around the inverter. Clear any obstructions from the cooling vents.

If the issue persists after basic troubleshooting, please contact your supplier or SRNE technical support for assistance.

6. Specifications

Detailed technical specifications for the SRNE SPI 4-6.5K-UP series off-grid solar inverter:

7. Warranty and Support

7.1 Product Warranty

The SRNE SPI 4-6.5K-UP series inverter comes with a 2-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use and service conditions. Please retain your proof of purchase for warranty claims.

7.2 Technical Support

For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact your authorized SRNE dealer or the point of purchase. Provide your product model number and serial number when seeking support.

8. Compliance and Disclaimer

8.1 Disclaimer

⚠️ WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.