Dear Nakarin,
The following are the comments.
1) Please revise the capacity of 24 UPS to suit the load requirement. It seems that the 24 VDC UPS is over designed.
2) Please include Invertor along with 24 UPS system. We require 220 VAC for 300 VA load. The input for the invertor shall be from 24 VDC distribution panel.
Kind Regards