This at the time was the dominant kind of UPS and is also restricted to around the 150 kVA variety. These models remain largely utilised in certain industrial settings (oil and fuel, petrochemical, chemical, utility, and heavy marketplace marketplaces) due to the sturdy nature with the UPS. At Laptop Manual https://wordpress50470.blogoxo.com/33993649/a-secret-weapon-for-uninterruptible-power-supply-pdf