5-254
G60 Generator Protection System
GE Multilin
5.6 GROUPED ELEMENTS
5 SETTINGS
5
In a HardFiber G60 device, this setting can point to one of the TRD inputs mapped to a Brick dcmA input. In both
cases, the minimum and maximum scaling settings of that transducer input are used to perform the per-unit conver-
sion. The unit setting shall be configured as “Amps” if the transducer input is used.
These minimum and maximum settings are set as per the Hall sensor current rating. The per-unit computation is
scaled to a base equal to the maximum value setting, with a zero per-unit value corresponding to zero in the unit sys-
tem used by the maximum value setting. For example, in the case where the maximum value setting is 100 A, a trip
level of 75 A is achieved by setting the operate level at 0.75 pu, regardless of the range (for example, 4 to 20 mA, 0 to
20 mA etc.) and regardless of the minimum value setting.
•
FIELD OVER CURRENT PICKUP
: This setting specifies the field current level above which the overcurrent element
picks up.
•
FIELD OVER CURRENT DELAY
: This setting specifies a time delay for the overcurrent element. This delay is added
to the operating time of the element to obtain the overall delay.
•
FIELD UNDER CURRENT PICKUP
: This setting specifies the field current level above which the undercurrent ele-
ment picks up.
•
FIELD UNDER CURRENT DELAY
: This setting specifies a time delay for undercurrent element. This delay is added to
the operating time of the element to obtain the overall delay.
•
FIELD CURRENT BLK
: This setting allows the user to select a FlexLogic operand to block the field ground function.
The field current fault detector function logic is shown below.
Figure 5–136: FIELD CURRENT FAULT DETECTOR FUNCTION LOGIC
SETTINGS
= Enabled
Function
= Off
Block
AND
SETTING
Field OC Pickup
RUN
I
Pickup
FLD
≥
SETTING
Field UC Pickup
RUN
I
Pickup
FLD
≤
SETTING
Field OC Delay
T
PKP
0
SETTING
Field UC Delay
T
PKP
0
FLEXLOGIC OPERANDS
FIELD OC OP
FIELD OC PKP
FIELD OC DPO
FLEXLOGIC OPERANDS
FIELD UC OP
FIELD UC PKP
FIELD UC DPO
ACTUAL VALUE
Field Current
830011A2.CDR
SETTINGS
= <Value>
Field Current Origin
Содержание Multilin g60
Страница 10: ...x G60 Generator Protection System GE Multilin TABLE OF CONTENTS INDEX ...
Страница 32: ...1 22 G60 Generator Protection System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Страница 130: ...3 68 G60 Generator Protection System GE Multilin 3 4 FIELD AND STATOR GROUND MODULES 3 HARDWARE 3 ...
Страница 160: ...4 30 G60 Generator Protection System GE Multilin 4 3 FACEPLATE INTERFACE 4 HUMAN INTERFACES 4 ...
Страница 486: ...5 326 G60 Generator Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Страница 518: ...6 32 G60 Generator Protection System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Страница 532: ...7 14 G60 Generator Protection System GE Multilin 7 2 TARGETS 7 COMMANDS AND TARGETS 7 ...
Страница 538: ...8 6 G60 Generator Protection System GE Multilin 8 1 PHASE DISTANCE THROUGH POWER TRANSFORMERS 8 THEORY OF OPERATION 8 ...
Страница 748: ...D 10 G60 Generator Protection System GE Multilin D 1 IEC 60870 5 104 APPENDIX D D ...
Страница 760: ...E 12 G60 Generator Protection System GE Multilin E 2 DNP POINT LISTS APPENDIX E E ...