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In our datacenter we have 22 separate rack mounted apc ups devices all power comes from a single source. How can we interconnect the ups devices for redundancy?
a)What are the advantages or disadvantages, if any, of traditional transformer design UPS systems, over the "newer" transformer-less systems. b)Related to the above, would a transfomer UPS in redundant parallel configuration, offer greater protection to the load, over the modular, transformer-less...