Functional Description; How It Works; Regulation Capabilities - ABB PCS100 AVC-20 User Manual

12 PCS100 AVC-20 User Manual
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2 FUNCTIONAL DESCRIPTION

2.1 How it works

The PCS100 AVC-20 is a three-phase low voltage product which provides effective, efficient voltage regulation
where industrial or commercial processes demand a clean, readily available, and consistent supply of power. The
PCS100 AVC-20 requires no energy storage as it draws the additional current required to make up the
compensating voltage from the utility supply.
Power supply before

2.2 Regulation Capabilities

he PCS100 AVC-20's performance with undervoltage is adaptive to load conditions. Based on the loading of the
unit or load power factor the PCS100 AVC-20 fully regulates undervoltage from down to 80% of the nominal
voltage.
Detailed regulation capabilities are shown in the following table.
Utility Supply Problem
Continuous undervoltage
(brownout)
Continuous overvoltage
Correction of phase angle errors created by faults in the supply
system
Correction of voltage imbalance from utility supply
Attenuation of flicker voltages in the utility supply
PCS100 AVC-20
Figure 2-1: PCS100 AVC-20 Concept
85% supply voltage
80% supply voltage
70% - 85% supply voltage
120% supply voltage
130% supply voltage
Table 2-1: PCS100 AVC-20 regulation capabilities
Input
See graph below
Yes (downstream)
Power supply after
PCS100 AVC-20
Output
100% Load power factor
100% Load power factor
Load PF dependable
100%
110%
Yes
Yes
Note
1.0
0.75