Emergency Modules Off; Figure 59 Emergency Modules Off - Liebert 1000kVA Operation & Maintenance Manual

3.3.7

Emergency Modules Off

The Local Emergency Modules Off (LEMO) mode is used to remove power from all UPS system com-
ponents and the 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. The 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 3.4.5 - Shutdown Procedures.

Figure 59 Emergency modules off

UPS UPS
CB1
CB2
MBD
Battery
RIB RIB RIB RIB
#3 #3 UPS #2
CB1
R R
I I
CB2
MBD
Battery Battery
RIB RIB
UPS UPS #1 #1
CB1
SBS
R
SBB
I
System
CB2
Controls
Output
SCCT
MBD
(can accommodate up to 6 UPS modules)
80
Operation
BFB BFB
BIB
MBB
SKRU
MIB
To Critical Load
SCCT