Eaton Powerware 9355 - UPS Installation; Installation Safety Warning

EATON Powerware
®
9355 UPS (20/30 kVA) Installation and Operation Manual S 164201626 Rev B www.powerware.com
21
Chapter 5 Electrical 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 (UPS only or parallel system)
S 208V, 480V, or 600V 60-Hz input is available w hen using t he Options Cabinet with
an input isolation transformer
S 480/480 Vac is available when using the Options Cabinet with an output
transformer
Output overcurrent protection and disconnect switch must be provided by others.
Figure 22 through Figure 28 beginning on page 36 show the oneline diagrams.
WARNING
Only qualified service personnel (such as a licensed electrician) should perform the UPS installation and
initial startup. Risk of electrical shock.
Wiring Preparation
To begin wiring the UPS or Options 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 34.
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 UPS or Options
Cabinet will be connected. Be absolutely sure there is no power.
4. Determine your equipment’s grounding requirements according to your local
electrical code.
5. Remove the UPS front door (see page 10).
6. Verify that the UPS input circuit breaker is in the OFF position (see Figure 12).
7. Verify that the UPS battery circuit breaker is in the OFF position.
8. If you ordered the UPS with the optional output circuit breaker, verify that the
output circuit breaker is in the OFF position.
9. Remove the UPS wiring access cover and retain.