Cable Tray divider spacing requirements

[RNLENI]

I am planning to run 480V AC and 24VDC Cables through same cable tray. Going to use solid metalic Divider inside the cable tray and run 480V cable on one side and 24V Cable on the other side. Is there a minimum distance requirement between 480v and 24v cables in this senario with the divider plate between them? or is there any minimum distance between 480V/24VDC cables and the solid metalic divider plate