6–30 339 MOTOR PROTECTION SYSTEM – INSTRUCTION MANUAL
S2 SYSTEM SETUP CHAPTER 6: SETPOINTS
3. Output Relay #1 (TRIP) configuration
Output Relay 1 (TRIP) blocked by LE1:
FlexCurves
There are two user-programmable FlexCurves™ available with the 339 system, labeled A
and B.
For details on FlexCurves please refer to S3 Protection/Thermal Protection in this manual.
NOTE:
The User Curve and Flexcurves A and B are available for programming under EnerVista
3 Series Setup software.
The following Flexcurve A diagram: Example user-programmed curve shows a user-
programmed IEC Short Inverse curve. The curve in this example was obtained by choosing
the IEC Short Inverse option from the Select Curve setting in the FlexCurve A screen. The
resulting curve can be modified if desired by moving the graph plot points.
Figure 6-12: Example user-programmed curve
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