Solis S5 GR3P Series 3-Phase Inverter User Manual

Introduction

This manual provides detailed information for the installation, operation, and maintenance of Solis S5 GR3P series 3-phase inverters, including models S5-GR3P-10K, S5-GR3P-15K, and S5-GR3P-20K. These inverters are designed for grid-tied photovoltaic systems and feature dual Maximum Power Point Tracking (MPPT) technology.

Safety Precautions

General Safety:

Read all instructions and cautionary markings in this manual and on the product before installation and operation.
Ensure that installation and maintenance are performed by qualified personnel only.
The inverter contains high voltage components. Do not touch any internal parts.
Always disconnect all power sources before performing any maintenance or installation work.
Follow all local electrical codes and regulations.

Electrical Safety:

Ensure proper grounding of the inverter and the entire PV system.
Use appropriately rated cables and connectors.
The DC input voltage can be hazardous. Ensure DC disconnects are properly rated and operated.
The AC output voltage can be hazardous. Ensure AC disconnects are properly rated and operated.

Product Overview

The Solis S5 GR3P series inverters are high-efficiency, reliable grid-tied solar inverters. Key features include:

Dual MPPT for optimized energy harvest from panels with different orientations or shading.
Wide MPPT voltage range.
High conversion efficiency.
Integrated DC disconnect switch for safety.
IP66 protection rating for outdoor installation.
Multiple communication options (e.g., Wi-Fi, GPRS) for monitoring.

Installation

1. Site Selection:

Choose a location that is well-ventilated, protected from direct sunlight and rain, and easily accessible for maintenance.
Ensure the mounting surface can support the weight of the inverter.

2. Mounting:

Mount the inverter vertically on a wall or a suitable structure using the provided mounting bracket.
Ensure there is adequate clearance around the inverter for ventilation (refer to specific clearance requirements in the detailed manual).

3. Electrical Connections:

DC Connection: Connect the PV array to the DC input terminals. Ensure correct polarity and that the DC voltage does not exceed the inverter's maximum input voltage. The DC disconnect switch must be OFF before connecting.
AC Connection: Connect the inverter's AC output to the grid via an appropriate circuit breaker. Ensure the grid voltage and frequency match the inverter's specifications.
Grounding: Connect the grounding terminal of the inverter to the system ground.

4. Communication Connection (Optional):

Connect the communication module (e.g., Wi-Fi stick) if required for monitoring.

5. Commissioning:

After all connections are verified, turn ON the DC disconnect switch first, then the AC breaker.
The inverter will automatically start operation when sufficient solar power is available and the grid is present.

Operation

The inverter operates automatically once connected to the PV array and the grid. The status indicators on the inverter display will show the current operating mode (e.g., generating, standby, fault).

Monitoring:

Users can monitor the system's performance through the Solis monitoring platform via Wi-Fi or GPRS, if equipped. This typically includes real-time power generation, historical data, and system status.

Maintenance

Regular maintenance ensures optimal performance and longevity of the inverter.

Cleaning: Periodically clean the inverter's casing and ventilation openings with a soft, dry cloth. Avoid using solvents or water.
Inspections: Regularly inspect all electrical connections for tightness and signs of corrosion. Check the PV array and wiring for any damage.
Firmware Updates: Solis may release firmware updates to improve performance or add features. Follow the provided instructions for updating the inverter's firmware.

Troubleshooting

Refer to the fault code list in the detailed manual for specific error messages and their corresponding solutions. Common issues and general troubleshooting steps include:

No power generation: Check DC and AC connections, ensure PV array is producing voltage, verify grid availability, and check inverter status indicators.
Low power output: Inspect PV panels for shading or soiling, check MPPT status, and verify ambient temperature.
Inverter fault: Consult the fault code table and contact Solis support if the issue persists.

Technical Specifications

Specific technical details such as rated power, maximum DC voltage, MPPT voltage range, AC output voltage, frequency, and efficiency are provided in the product datasheet and detailed user manual.

Contact Information

For further assistance, warranty claims, or technical support, please refer to the official Solis website or contact your local Solis distributor.

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