Eaton 9395 550/275 UPS (225–550 kVA) Installation and Operation Manual 164201716 Rev 2 www.eaton.com/powerquality 1-1Chapter 1 IntroductionThe Eaton® 9395 uninterruptible power supply (UPS) is a true online, continuous-duty,transformerless, double-conversion, solid-state, three-phase system, providingconditioned and uninterruptible AC power to protect the customer's load from powerfailures.The Eaton9395 550/275 UPS cabinet contains two sections: an integrated systembypass module (ISBM) rated for a maximum of 550 kVA and a single UninterruptiblePower Module (UPM) rated for a maximum of 275 kVA. This configuration providesfuture upgradability to a maximum of 550 kVA using the Field Installed UPM (FI-UPM).Adding the FI-UPM can also provide redundancy if the power requirements are lessthan the single UPM rating.The UPS is available as a single unit or an optional multiple unit distributed bypasssystem (see paragraph 1.2.7).The Eaton9395 online power protection system is used to prevent loss of valuableelectronic information, minimize equipment downtime, and minimize the adverseeffect on production equipment due to unexpected power problems.The Eaton9395 UPS continually monitors incoming electrical power and removes thesurges, spikes, sags, and other irregularities that are inherent in commercial utilitypower. Working with a building's electrical system, the UPS system supplies clean,consistent power that sensitive electronic equipment requires for reliable operation.During brownouts, blackouts, and other power interruptions, batteries provideemergency power to safeguard operation.The UPS is housed in a single, free‐standing cabinet with safety shields behind thedoor and front panels for hazardous voltage protection. The cabinet matches thebattery and distribution cabinets in style and color. Figure 1‐1 shows the Eaton9395550/275 UPS. Figure 1‐2 shows the Eaton9395 550/275 UPS with the FI-UPM.NOTE Startup and operational checks must be performed by an authorized Eaton Customer ServiceEngineer, or the warranty terms specified on page W-1 become void. This service is offered as part of thesales contract for the UPS. Contact an Eaton service representative in advance (usually a two-week notice isrequired) to reserve a preferred startup date.1.1 UPS Standard FeaturesThe UPS has many standard features that provide cost‐effective and consistentlyreliable power protection. The descriptions in this section provide a brief overview ofthe UPS standard features.1.1.1 Installation FeaturesCabinets can be permanently bolted to the floor.Power and control wiring can be routed through the top or bottom of the cabinet withconnections made to easily accessible terminals. External sensing and monitoringcontrol wire must be installed in accordance with Class 1 wiring methods.Figure
