EATON Powerware® 9125 Two-in-One UPS (700–2000 VA) User’s Guide S 164201514 Rev B www.powerware.com 1Chapter 1 IntroductionThe Powerware® 9125 uninterruptible power system (UPS) protectsyour sensitive electronic equipment from the most common powerproblems including power failures, power sags, power surges,brownouts, line noise, high voltage spikes, frequency variations,switching transients, and harmonic distortion.Power outages can occur when you least expect it and powerquality can be erratic. These power problems have the potential tocorrupt critical data, destroy unsaved work sessions, and damagehardware — causing hours of lost productivity and expensive repairs.With the Powerware 9125, you can safely eliminate the effects of powerdisturbances and guard the integrity of your equipment. Figure 1 showsthe Powerware 9125 UPS with an optional Extended Battery Module(EBM).Figure 1. The Powerware 9125 UPS with Optional EBMProviding outstanding performance and reliability, the Powerware 9125’sunique benefits include the following:S Online UPS design with pure sine wave output. The UPS filters andregulates incoming AC power and provides consistent power to yourequipment without draining the battery.S 2U rack height that conserves valuable rack space.S Two-in-one form factor for using the UPS in a rack-mountconfiguration or as a standalone cabinet.S ABM® technology that uses advanced battery management toincrease battery service life, optimize recharge time, and provide awarning before the end of useful battery life.S Hours of extended runtime with up to four EBMs.