Powerware Tie Cabinet Powerware 9355 - Manual (Page 13)

EATON Powerware ® 9355 Tie Cabinet (20/30 kVA) Installation Guide S 164201630 Rev A www.powerware.com 7
Chapter 3 Tie Cabinet Installation
The Powerware 9355 has the following power connections:
S 3-phase (L1, L2, and L3), neutral, and ground connection for rectifier/bypass input
S 3-phase (L1, L2, and L3), neutral, and ground connection for load output
The nominal input/output voltages are:
S 120/208 or 127/220 Vac
Output 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 G
Only qualified service personnel (such as a licensed electrician) should perform the UPS installation and
initial startup. Risk of electrical shock.
To hardwire the Tie Cabinet:
1. Verify that the electrical connections to the installation site have been properly
installed.
2. A wall-mounted, user-supplied, readily-accessible disconnection device must be
incorporated 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 installation
of the Powerware 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 UPSs
will be connected. Be absolutely sure there is no power.
4. Determine your equipment’s grounding requirements according to your local
electrical code.