During a periodic inspection of a portable power station, there are several important things to look for:

1. Safety: Ensure that the power station is safe to use and test and that you have sufficient information to carry out the inspection safely. Check for any visible signs of damage or wear that could pose a safety risk.

2. Age and Deterioration: Examine the power station for any signs of aging or deterioration. Look for corrosion, rust, or other forms of damage that could affect its performance or lifespan.

3. Equipment Corrosion: Check for any corrosion on the power station's equipment, connectors, and cables. Corrosion can weaken connections and affect the overall performance of the power station.

4. Overload: Ensure that the power station is not being operated beyond its rated capacity. Check the load capacity and verify that the connected devices are within the recommended limits to prevent overloading and potential damage to the power station.

5. Control Wiring: If applicable, inspect the control wiring of the power station. Check for any signs of damage or wear on the wire insulation. Inspect the control cabinet and associated conduit to ensure that weather seals are intact. Verify the control power supply voltage and compare it to the voltage stated on the wiring diagram.

6. General Condition: Evaluate the overall condition of the power station. Look for any loose connections, frayed cables, or damaged components. Check for any unusual noises or smells during operation. These can be indicators of potential issues that need to be addressed.

By conducting a thorough inspection and addressing any issues promptly, you can ensure the proper functioning and longevity of your portable power station.