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Theory of Operation
Figure 2 Typical UPS system one-line diagram with optional maintenance bypass
THREE BREAKER MAINTENANCE BYPASS SWITCHBOARD
BFB | MBB |
| Critical |
| Load |
| AC Output |
BIB | MIB |
UPS MODULE
Static
Switch
Disconnects
Static
Bypass
Switch
Bypass CB
CONTROL POWER
RIB
INPUT |
CB |
MAIN INPUT
SWITCHGEAR
Controls |
Rectifier/ |
Charger |
Inverter |
MBD |
OUTPUT |
CB |
Battery
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