Solar Inverter Commissioning Checklist

Project & Site Details

Pre-Commissioning Checks

• Visual inspection of inverter and mounting
• Correct DC cable connections verified
• AC cable connections verified
• Earth/ground connections checked
• String voltages measured and within acceptable limits
• Polarity of DC connections verified
• All fuses/circuit breakers in correct state
• Clearance and ventilation adequate

Commissioning Steps

• Switch ON inverter as per manufacturer instructions
• Check for any fault/error indication
• Grid voltage and frequency verified
• Confirm inverter synchronizes with grid
• Check inverter output voltage and current
• Check communication with monitoring system
• Settings/configurations as per design

Test Results

Parameter	Measured	Unit
DC Input Voltage		V
DC Input Current		A
AC Output Voltage		V
AC Output Current		A
AC Output Frequency		Hz
Insulation Resistance (DC to GND)		MΩ

Notes & Observations

Commissioning Sign-Off