This after was the dominant form of UPS and is also restricted to around the 150 kVA variety. These units are still largely used in a few industrial options (oil and gasoline, petrochemical, chemical, utility, and heavy sector marketplaces) a result of the robust mother nature from the UPS. Illustration https://dominickhgcxu.suomiblog.com/new-step-by-step-map-for-uninterruptible-power-supply-ups-49470161