Overview
PVX.AI lets you perform voltage drop analysis on your cable design. It calculates losses from the farthest point in the cable route to the inverter input, verifying that the design meets electrical specifications.
Step-by-Step Guide
1. Open the cable analysis tool
Click the cable analysis button on the PVX.AI ribbon.
2. Select the farthest cable route
Select the farthest cable route in each inverter group one by one. Since cable cross-sections are the same within a string group, selecting the farthest route is sufficient. Name each group (e.g., Inverter 1).
3. Enter cable parameters
Enter each string’s power (e.g., 52 kW), cable cross-section (e.g., 6 mm2), cable material (copper or aluminum), and system voltage (e.g., 1500V DC). Select a color code to visually distinguish the group.
4. Analyze additional groups
Repeat the same process for other inverter groups. Use different color codes for each group.
5. Evaluate the results
PVX.AI generates a table showing total cable power and voltage drop percentage for each group. Verify that voltage drop stays within acceptable limits (1-2%).
Tips & Recommendations
- A voltage drop below 1% is ideal; above 2% indicates a need for larger cable cross-sections.
- Copper cables provide lower losses than aluminum but are more expensive.
- Run separate analyses for each inverter group to identify regional differences.