Basler DECS-200 - Page 56

ii Functional Description DECS-200
Underexcitation Limiter ..................................................................................................................... 3-13
Stator Current Limiting...................................................................................................................... 3-13
DROOP AND LINE-DROP COMPENSATION..................................................................................... 3-14
DATA LOGGING AND REPORTING ................................................................................................... 3-14
Sequence of Events Reporting ......................................................................................................... 3-14
System Contact Input State Changes ........................................................................................... 3-14
System Output State Changes......................................................................................................3-14
System Alarm State Changes .......................................................................................................3-14
Changes in State of System Status .............................................................................................. 3-14
Oscillography .................................................................................................................................... 3-15
Internal Variables ..........................................................................................................................3-15
Figures
Figure 3-1. Simplified Block Diagram.........................................................................................................3-1
Figure 3-2. Field Overcurrent Timing Curves ............................................................................................3-7
Figure 3-3. Soft Start Voltage Reference.................................................................................................3-10
Figure 3-4. Typical Underfrequency Compensation Curve .....................................................................3-10
Figure 3-5. Typical 1.10 PU V/Hz Limiter Curve...................................................................................... 3-11
Figure 3-6. Off-Line Overexcitation Limiting ............................................................................................ 3-11
Figure 3-7. On-Line Overexcitation Limiting ............................................................................................ 3-11
Figure 3-8. Inverse Time Characteristic for Takeover-Style OEL............................................................3-12
Figure 3-9. Custom Five-Point Curve ......................................................................................................3-13
Figure 3-10. Stator Current Limiting.........................................................................................................3-13
Figure 3-11. Data Record Example .........................................................................................................3-16
Tables
Table 3-1. 52L/M and 52J/K Truth Table (Option 1, Default Settings) ......................................................3-3