This at the time was the dominant variety of UPS and is restricted to throughout the 150 kVA variety. These units are still generally applied in certain industrial options (oil and gas, petrochemical, chemical, utility, and heavy marketplace markets) due to the sturdy nature of your UPS. Illustration #seven - https://garrettpqpnl.blogdomago.com/32723269/ups-uninterruptible-power-supply-things-to-know-before-you-buy