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4.11 Multi-Module Test and Maintenance Mode on Bypass
When Q3BP and the static switch (Q2S) are closed and Q5N is open, the system is in Test and Maintenance Mode
on bypass. The customer’s load is being supplied by Utility 2. In this condition, UPS’s can be turned on and off
without affecting the customer’s load. When the bypass is online in this mode, it will show as blue instead of its
normal green, as shown in Figure 4-9.
Figure 4-9: M-M Test and Maintenance Mode on Bypass.
GCC Mimic Diagrams
Graphical Command Center
page 4 —10
UPS 1
UPS
Online
Q4S
Q2S
Q5N
Q3BP
Utility 2
System
Utility 1
UPS 2
UPS
Offline
UPS 3
UPS
Offline
System
Test / Maint
Mode
ALARMS
Setup
Trend
10:15:55
Load
UPS 1
UPS 2
UPS 3