Eaton 9355 Installation Manual

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Contents

Eaton 9355 Tie Cabinet (20/30 kVA) Installation Guide 164201630 Rev D www.eaton.com/powerquality 7Chapter 3 Tie Cabinet InstallationThe Eaton 9355 has the following power connections: 3‐phase (L1, L2, and L3), neutral, and ground connection for rectifier/bypass input 3‐phase (L1, L2, and L3), neutral, and ground connection for load outputThe nominal input/output voltages are: 120/208 or 127/220 VacOutput overcurrent protection and disconnect switch must be provided by others.Figure 9 and Figure 11 beginning on page 15 show the oneline diagrams.W A R N I N GOnly qualified service personnel (such as a licensed electrician) should perform the UPS installation andinitial startup. Risk of electrical shock.To hardwire the Tie Cabinet:1. Verify that the electrical connections to the installation site have been properlyinstalled.2. A wall-mounted, user‐supplied, readily‐accessible disconnection device must beincorporated in the input wiring.Compare the circuit breaker ratings to the ones in Table 1 on page 11.NOTE To accommodate the feature of easy system expandability, it is recommended that initial installationof the Eaton 9355 UPS contain wiring to support the maximum capacity of the UPS cabinet.3. Switch off utility power to the distribution point where the Tie Cabinet and UPSswill be connected. Be absolutely sure there is no power.4. Determine your equipment's grounding requirements according to your localelectrical code.