HOSE 9N5334 - Caterpillar

The Series 1200 Uninterruptible Power Supply (UPS) Parallel System creates a complete continuous power system that protects sensitive loads from short disruptions in power and extended power outages.The Series 1200 UPS Parallel System is used to prevent the following effects:
Loss of critical electronic information
Minimal outages for equipment
Minimal adverse effect on production of equipment due to unexpected power problemsThe Series 1200 UPS Parallel System also provides the following advanced power conditioning features: voltage regulation and harmonic cancellation.The UPS Parallel System configuration consists of the following connected components: Parallel Control Cabinet, multiple MMU and Switchgear.Note: The Switchgear is commonly designed as custom for application. Thus, the Switchgear is referred to as optional equipment in this publication.The Multiple Module Units (MMUs) are a UPS 1200 that is designed with paralleling capability. The MMUs consist of multiple section cabinets that make up a stand alone UPS. The stand alone system consists of several connected cabinets that depending on the configuration may contain the following cabinets: Input/Output Cabinet, Static Switch Cabinet, Controls Cabinet, Inverter Cabinet, Flywheel Cabinets, MMU with DSB Transformer Cabinet and MMU with DSB Output Cabinet.The following cabinets are available options:
Bottom Entry Cabinet
Flywheel Cabinet, maximum of fourOverview of Operation
The Series 1200 UPS Parallel System is a fully integrated line interactive system that use spinning flywheels to store mechanical energy. During an interruption of utility power, the UPS converts mechanical energy into electrical energy. This energy is supplied to the external load until one of the following conditions occur:
The emergency standby generator (if available) assumes the load
The utility power is restored
The flywheels run out of energyOnce utility power returns, the system transfers the load back to utility power without interruption. The system provides voltage regulation and protection from power outages.Overview of PCC Component
PCC and Switchgear Components
Illustration 1 g01320110
Overview of the Components for the 1200 UPS PCCRefer to Illustration1 for the simplified circuit drawing of the components for the Series 1200 UPS Parallel Control Cabinet and Switchgear.The major components and options are shown in the following list:
Paralleling Cabinet Controller (PCC2)
Paralleling Bus Output Breaker (PBO)
Bypass Breaker (BYB)
Static Switch Input Breaker (SSI)
Parallel Bus Input Breaker (PIB) - one per MMU
Maintenance Bypass Breaker (MBP)
Maintenance Isolation Switch (MIS)Paralleling Cabinet Controller 2
The PCC2 controls the paralleling switchgear. The PCC2 controls the following motor operated, stored energy type breakers: PBO and BYB. The PBO and the BYB are controlled as a transfer pair during transfers to the the bypass and from the bypass. The PCC2 determines if the output will be energized based on the following criteria:
Upon power up
Assuming the BYB and PBO are open
Auto Load setting
Start parameter setting
MBP state
Voltage levels of parallel bus and bypass inputParallel Bus Output Breaker (PBO)
The PBO is a breaker in the paralleling switchgear. The PBO is located on the output of the parallel bus. The breaker is automatically operated by the PCC2. The breaker is used to connect the parallel bus to the load.Static Switch Input Breaker (SSI) and Bypass Breaker (BYB)
The SSI acts quickly to connect the bypass to the load. For Switchgear