Subassemblies - ABB PCS100 UPS-I User Manual

30 PCS100 UPS-I User Manual
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5 SUBASSEMBLIES

The PCS100 UPS-I consists of the following subassemblies:
A Utility Disconnect that disconnects the utility supply during a disturbance
–
Inverters that convert energy storage DC energy to 3-phase AC power
–
Float Charger to charge the energy storage when the utility is operating normally
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A Fail-Safe Bypass to automatically bypass the PCS100 UPS-I when a fault occurs.
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Note: The Fail-Safe Bypass is optional in some models.
A Coupling Transformer to match the inverter output with the nominal utility voltage.
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Note: There are two Coupling Transformers for 3 MVA systems.
Energy Storage (Ultracapacitor or battery) that supplies power to the load during a utility
–
disturbance
Together, these sub-assemblies are referred to as the PCS100 UPS-I system. Small PCS100 UPS-I models have
multiple sub-assemblies in one enclosure. Large PCS100 UPS-I models may have one sub-assembly housed in
multiple enclosures.
Input
These sub-assemblies are described in the following sections.
Fail-Safe Bypass
Utility Disconnect
Coupling Transformer
Circuit Breaker
Float
Charger
Float Charger
Supply Fuses
PCS100
Inverters
Blocking
DC
Diodes
Fuses
Blocking Diodes
DC Fuses
SW1/SW2
Ultracapacitor
Storage Only
Figure 5-1: PCS100 UPS-I SLD with enclosure definition
PCS100 UPS-I
Fail-Safe Bypass Enclosure
Utility Disconnect
Enclosure
Coupling
Transformer
Coupling Transformer
Enclosure
GDM (HMI)
Auxiliary Master Module
Inverter Enclosure/s
DC
Circuit Breaker
Energy Storage
(Batteries or
Ultracapacitors)
Energy Storage
Enclosure/s
Output