
9-12
G30 Generator Protection System
GE Multilin
9.1 SETTING EXAMPLE
9 APPLICATION OF SETTINGS
9
9.1.11 FREQUENCY
The pickup and delay settings are dependent on operating practices and system characteristics. In this example, two over-
frequency and two underfrequency elements will be used. The elements will be blocked when offline. Underfrequency will
initiate a trip. Overfrequency will alarm only. Either source may be assigned.
Make the following changes in EnerVista UR Setup or through the
SETTINGS
CONTROL ELEMENTS
UNDERFRE-
QUENCY
UNDERFREQUENCY 1(2)
and the
SETTINGS
CONTROL ELEMENTS
OVERFREQUENCY
OVERFREQUENCY 1(2)
menus:
9.1.12 ACCIDENTAL ENERGIZATION
In this example, the
ACCDNT ENRG ARMING MODE
is selected as “UV and Offline”. The
ACCDNT ENRG OC PICKUP
setting
should be set at ½ the minimum expected fault current. In this case, 1.0 pu (8000 A primary) is selected. In cases where it
is possible to re-energize the machine through its auxiliary transformer, a lower setting may be required. The undervoltage
pickup setting must be set above the maximum expected fault voltage.
Make the following changes in EnerVista UR Setup or through the
SETTINGS
GROUPED ELEMENTS
SETTING GROUP
1
ACCIDENTAL ENERGIZATION
menu:
Summary of Contents for G30
Page 10: ...x G30 Generator Protection System GE Multilin TABLE OF CONTENTS ...
Page 30: ...1 20 G30 Generator Protection System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 414: ...5 274 G30 Generator Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 484: ...11 12 G30 Generator Protection System GE Multilin 11 6 DISPOSAL 11 MAINTENANCE 11 ...
Page 512: ...A 28 G30 Generator Protection System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Page 620: ...B 108 G30 Generator Protection System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Page 666: ...E 10 G30 Generator Protection System GE Multilin E 1 IEC 60870 5 104 APPENDIX E E ...
Page 678: ...F 12 G30 Generator Protection System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...