Excessive leakage current in hybrid solar inverters can be a significant safety hazard and may affect the performance and reliability of your solar energy system. Sungrow‘s SH15/20/25T models, known for their efficiency and robustness, are designed to detect and alert users to such issues. This blog post will guide you through the steps to troubleshoot excessive leakage current in these inverters, ensuring that your system operates safely and efficiently.

## Understanding Excessive Leakage Current

Leakage current refers to any electrical current that flows outside of the intended circuit. In the context of solar inverters, this can occur due to insulation failures or environmental factors affecting the system components. Excessive leakage current can lead to inefficiencies, potential damage to the inverter, and even pose safety risks.

### Common Causes of Leakage Current:

– Environmental factors such as high humidity or water ingress.

– Poor insulation of AC and DC cables.

– Deterioration of components over time due to exposure to elements.

## Step-by-Step Troubleshooting Guide

### Step 1: Assess Environmental Conditions

Initially, check the environmental conditions around your inverter. Poor sunlight and damp environments can temporarily increase leakage currents. If the area around the inverter is wet or excessively humid:

– Allow the environment to dry or improve conditions around the installation area.

– Ensure that the inverter is protected from direct exposure to water and condensation.

### Step 2: Inspect Cable Insulation

After addressing any environmental concerns, inspect the insulation of both AC and DC cables connected to the inverter:

– Look for any signs of wear, damage, or deterioration in the cable insulation.

– Ensure that all connections are secure and that no exposed wires or terminals are visible.

– If you find damaged insulation, replace the affected cables or have them professionally repaired.

### Step 3: Contact Sungrow Support

If the environment is normal and the cables are in good condition, but the excessive leakage current alarm persists, it is time to seek further assistance from Sungrow:

– Contact Sungrow’s customer support for detailed troubleshooting and professional advice.

– Provide them with information about the steps you have already taken, any observations regarding the system’s performance, and the environmental conditions.

## Conclusion

Excessive leakage current in hybrid solar inverters like the Sungrow SH15/20/25T can be indicative of underlying issues that need immediate attention. By following these troubleshooting steps, you can help ensure the safety and efficiency of your solar power system. Remember, regular maintenance and timely checks of the environmental conditions and system components can prevent many common issues associated with solar inverters. If you encounter persistent problems, professional support from Sungrow is just a call away, ensuring that you receive the expert guidance needed to maintain your system’s optimal performance.