9-8
G60 Generator Protection System
GE Multilin
9.1 SETTING EXAMPLE
9 APPLICATION OF SETTINGS
9
AUXILIARY OV1
menu:
b) 100% STATOR GROUND
The auxiliary voltage input is required for both the 100% stator ground and the third harmonic neutral undervoltage ele-
ments. Therefore the NEUTRL source will be assigned for these elements. Make the following changes in the
SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1
STATOR GROUND
menu
STATOR GROUND SOURCE:
"SRC 2" (the "NEUTRL" source)
This 100% stator ground element provides ground fault protection for the neutral end of the stator winding. The element
has two stages. In this application, stage 1 is used to trip the machine and stage 2 is used for alarm purposes. Set the
pickup to 0.15 for both stages to provide adequate overlap with the auxiliary overvoltage element. Set stage 1 to 0.375 V
secondary (this value may be increased for security in particularly noisy environments). Stage 2 is typically set at 0.3 V sec-
ondary. The supervision settings are expressed in per unit of the
NOMINAL PHASE VT SECONDARY
setting. The time delay
settings are 5 seconds and 1 second for the Stage 1 and Stage 2 elements respectively.
,
(EQ 9.31)
Make the following changes in EnerVista UR Setup or through the
SETTINGS
GROUPED ELEMENTS
SETTING GROUP
1
STATOR GROUND
100% STATOR GROUND
menu:
STG1 SUPV
0.375 V
66 V
---------------------
0.0057 pu
=
=
STG2 SUPV
0.300 V
66 V
---------------------
0.0045 pu
=
=
Summary of Contents for Multilin g60
Page 10: ...x G60 Generator Protection System GE Multilin TABLE OF CONTENTS INDEX ...
Page 32: ...1 22 G60 Generator Protection System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Page 160: ...4 30 G60 Generator Protection System GE Multilin 4 3 FACEPLATE INTERFACE 4 HUMAN INTERFACES 4 ...
Page 486: ...5 326 G60 Generator Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Page 518: ...6 32 G60 Generator Protection System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Page 532: ...7 14 G60 Generator Protection System GE Multilin 7 2 TARGETS 7 COMMANDS AND TARGETS 7 ...
Page 748: ...D 10 G60 Generator Protection System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Page 760: ...E 12 G60 Generator Protection System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...