- Eaton UPS User's Guide

UPS STARTUP

Eaton 9170

UPS (3–18 kVA) User's Guide S 164201393 Rev E www.eaton.com/powerquality

6. If applicable, test proper operation of optional external control

signals and computer communication before connecting the load.

(See “DB-9 Communication Port” on page 92 for details.)

7. Plug the equipment to be protected into the UPS output

receptacles. Turn on the equipment that is connected to the UPS.

NOTE DO NOT protect laser printers with the UPS because of the exceptionally high power

requirements of the heating elements.

NOTE The total volt-ampere load must not exceed the volt-ampere rating of the entire

cabinet. Failure to balance the loads may cause an overload alarm even if the full capacity of

the UPS has not been reached.

For Eaton 9170+ UPS models with low-voltage output receptacles,

it is recommended to divide loads between upper and lower

receptacles as equally as possible. (In some configurations, each

set of receptacles is limited to one half of the total UPS capacity.)

Whether the cabinet has one panel containing eight receptacles,

two panels containing 16 receptacles, or three panels containing

24 receptacles, you should try to supply half of the UPS output

through the upper half of the receptacles (X1) and the other half

through the lower half of the receptacles (X2), as shown in

Figure 50.

Figure 50. Balancing Receptacle Loads

NOTE The factory-default wiring for all high-voltage receptacles in a chassis without a

power cord is 3-wire plus ground input. If you have a universal power module (ASY-0674), all

receptacles MUST be re-wired for a 2-wire plus ground input configuration as shown in

Figure 19 on page 31.