This when was the dominant type of UPS and is particularly restricted to around the 150 kVA variety. These models remain mostly utilised in a few industrial settings (oil and fuel, petrochemical, chemical, utility, and hefty field marketplaces) because of the strong mother nature of your UPS. Example #7 - https://jaredspkez.blogrenanda.com/40075362/the-fact-about-power-supply-uninterruptible-that-no-one-is-suggesting