Maintenance Bypass Mode (Optional); Figure 7−4. Path Of Current Through The Parallel Capacity/Redundant System In Maintenance Bypass Mode - Eaton Powerware 9315 Installation And Operation Manual

7.3.1

Maintenance Bypass Mode (Optional)

The Parallel Capacity/Redundant system can be manually transferred to
maintenance bypass if the System Maintenance Bypass (SMB) has been provided.
Maintenance bypass is used when the system is not operating or is in need of
service. The maintenance bypass source supplies the commercial AC power to the
load directly.
Figure 7−4 shows the path of electrical power through the Parallel Capacity/
Redundant system when operating in Maintenance Bypass mode.
UPM
INPUT
BATT
BATT
BATT
BATT
Path of Electrical Power
Figure 7−4. Path of Current Through the Parallel Capacity/Redundant System in
EATON Powerware 9315 Parallel Capacity/Redundant System
164201150 Rev. E www.powerware.com
CAUTION
The critical load is not protected while the Parallel/ Capacity
system is in Maintenance Bypass mode.
UPM1
UPM2
UPM3
UPM4
Maintenance Bypass Mode.
BYPASS
INPUT
SBM
FBP
CBP
SS
CBS
SMB
MIS
MBP
(open)
OUTPUT TO
CRITICAL
LOAD
MAINTENANCE
BYPASS
INPUT
7−7