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Operation 85
3.2.7 Emergency Modules Off
The Local Emergency Modules Off (LEMO) mode is used to remove power from all UPS system components,
and t he critical load will continue to be supplied through the bypass line.
The Emergency Module Off control is a guarded pad on the SCC Control Panel (see Figure 10).
Lift the cover and press the pad. Th e load will be transferred to bypass, and the battery (MBD), input, and output
circuit breakers will be opened (tripped). This will remove power from all UPS system components except the
controls, system bypass circuit breaker, and the static switch.
Refer to 3.3.3 - Shutdown Procedures.
Figure 54 Emergency Modules Off
BIB
SKRU
MIB
MBB
I
R
#2UPS
CB1
CB2
System
Controls
RIB RIB
RIB BFB
Output
SBB
SBS
RIB RIB
RIB BFB
#1UPS#3UPS
I
R
#1UPS
CB1
I
R
#3UPS
CB1
CB2 CB2
SCCT
SCCT
(can accommodate up to 6UPS modules)
ToCriticalLoad
Battery
MBD
Battery
MBD
Battery
MBD
DISCONTINUED
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