ABB PCS100 AVC-20 - Subassemblies

PCS100 AVC-20 User Manual 25
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5 SUBASSEMBLIES
The PCS100 AVC-20 consists of a voltage source inverter connected to an injection transformer which is installed
in series with the supply and load. It monitors the incoming supply voltage and provides almost instantaneous
regulation for any disturbances.
The PCS100 AVC-20 incorporates a bypass system. Should the inverter become overloaded the bypass system
shunts the injection transformer, relieving load from the inverter and effectively providing a direct connection to
the load.
The PCS100 AVC-20 is composed of two main sub-assemblies:
Controller Enclosure
Transformer Enclosure
Together these sub-assemblies are referred to as the PCS100 AVC-20 System. The two sub-assemblies on the
smallest PCS100 AVC-20 (frame size 1B) are housed in one enclosure. On larger PCS100 AVC-20 systems they are
housed in separate enclosures.
Bypass
Inverter
Rectifier
PCS100 AVC-20
Input Circuit
Breaker
3-phase
Utility Supply
3-phase
Load
Injection
Transformer
Figure 5-1: PCS100 AVC-20 SLD with enclosure definition