Normal Mode; Figure 7−1. Path Of Current Through The Parallel Capacity/Redundant System In Normal Mode - Eaton Powerware 9315 Installation And Operation Manual

7.2.1

Normal Mode

In Normal mode, utility AC power is supplied to the UPMs. Power from the output
of the UPMs is then supplied to the SBM for parallel operation. The SBM then
supplies the critical load with clean, filtered AC power. The message System
Normal" appears in the status area of the Control Panel LCD screen.
Figure 7−1
Capacity/Redundant system when operating in Normal mode.
BATT
BATT
BATT
BATT
Figure 7−1. Path of Current Through the Parallel Capacity/Redundant System
If the utility AC power is interrupted or is out of specification, the UPMs
automatically switch to Battery mode to support the critical load with no
interruption. When utility power returns, the UPMs return to Normal mode.
If the UPMs becomes overloaded or unavailable, the SBM switches to Bypass
mode. The SBM automatically returns to Normal mode when the error condition
is cleared and system operation is restored within specified limits.
EATON Powerware 9315 Parallel Capacity/Redundant System
164201150 Rev. E www.powerware.com
shows the path of electrical power through the Parallel
UPM
INPUT
UPM1
UPM2
UPM3
UPM4
Path of Electrical Power
in Normal Mode.
BYPASS
INPUT
SBM
FBP
CBP
(open)
SS
CBS
OUTPUT TO
CRITICAL
LOAD
7−3