EATON Powerware
®
9170
+
UPS (3–18 kVA) User’s Guide S 164201393 Rev C www.powerware.com
19
Chapter 3 UPS with Bypass Electrical Installation
NOTE If you have a plug-receptacle unit, continue to “Battery Cabinet Installation” on
page 61 for installing optional battery cabinets or to “UPS Startup” on page 67.
WARNING
Only qualified service personnel (such as a licensed electrician) should perform the electrical
installation. Risk of electrical shock.
The Powerware 9170
+
UPS input power may be hardwired through
conduit to either a main power source circuit breaker or to an optional
external bypass switch. For hardwired installations, it is recommended
that you install a Powerware bypass switch to enable power transfer
during maintenance or UPS downtime. If a bypass switch is used, both
UPS input and UPS output must be hardwired — through separate
conduits — to the bypass switch, as shown in Figure 13.