• Which type of UPS do you recommend for this system? There are four basic configurations of UPS: the standby, Ferro resonant standby, line-interactive, and the true online. Factors of the various UPS systems include switch time, the amount of electricity that the UPS supplies, and costs. Switch time refers to the amount of time it takes for the UPS to activate a transfer switch. Also the wattage needed to keep the equipment on for a certain period of time should be precisely calculated to select a proper UPS to meet the organization’s power supply needs. Finally, the more sophisticated the UPS becomes, the more costly it becomes. So the best way is to select the smallest UPS necessary to provide the needed support. In this scenario, a Ferro resonant standby UPS would be the best selection among a number of UPS configurations.