Controls and Operation
6-4 Eaton BladeUPS 12 kVA Maintenance Bypass Cabinet Installation and Operation Manual P-164000130—Rev 1 www.eaton.com/powerquality
9. Ensure that the MBC circuit breakers are set as shown in Table 6-2. and Figure 6-2.
Table 6-2. Normal Operation Settings for Circuit Breaker
SIB CLOSED
MBB OPEN
RIB CLOSED
UOB CLOSED
MBC Distribution Panel Main Breakers CLOSED
NOTE Closed breaker is U
P; Open breaker is DOWN.
Rectifier Input Breaker
RIB 3P 208VAC 225AT
UPS Output Breaker
UOB 3P 208VAC 225AT
Maintenance Bypass Breaker
MBB 3P 208VAC 225AT
Mechanical
Interlock Bar
UPS Output
Breaker (UOB)
CLOSED
Maintenance Bypass
Breaker (MBB)
OPEN
UPS Bypass
Indicator Light
GREEN
Rectifier Input
Breaker (RIB)
CLOSED
Figure 6-2. Normal Operation
6.4 Transferring the UPS from Maintenance Bypass
Only trained personnel familiar with the operation of this equipment should transfer loads. Failure
to follow this transfer sequence may cause loss of power to loads or overload protection devices
to activate.