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5.6 GROUPED ELEMENTS
f) LOSS OF LIFE
PATH: SETTINGS
GROUPED ELEMENTS
LOSS OF LIFE
The Loss of Life element detects the accumulated total consumed transformer life. This element can be set to issue an
alarm or trip when the actual accumulated transformer life becomes larger than the user-specified loss of life pickup value.
For new transformers installations, the
ers, the user should pre-determine the consumed transformer life in hours.
•
LOSS OF LIFE INITIAL VALUE: Enter a setting for the consumed transformer life in hours. When the Loss of Life ele-
ment is enabled, the computed loss of life will be added to the initial loss of life.
•
LOSS OF LIFE PICKUP: Enter the expended life, in hours, required for operation of the element. This setting should
be above the total transformer life set as a reference based on nominal loading conditions and a 30°C ambient temper-
5
ature, as outlined in the IEEE standards.
5-180
SETTING GROUP 1(6)
LOSS OF LIFE
FUNCTION: Disabled
LOSS OF LIFE INITIAL
MESSAGE
VALUE: 0 hrs
LOSS OF LIFE PICKUP:
MESSAGE
180000 hrs
LOSS OF LIFE BLOCK:
MESSAGE
Off
LOSS OF LIFE TARGET:
MESSAGE
Self-Reset
XFMR INITIAL LOSS OF LIFE
SETTING
LOSS OF LIFE
FUNCTION:
Disable=0
Enable=1
SETTING
AND
LOSS OF LIFE
BLOCK:
Off=0
ACTUAL VALUE
XFMR LIFE LOST
Figure 5–94: TRANSFORMER LOSS OF LIFE LOGIC
T60 Transformer Protection System
TRANSFORMER
Range: Disabled, Enabled
Range: 0 to 500000 hrs. in steps of 1
Range: 0 to 500000 hrs. in steps of 1
Range: FlexLogic™ operand
Range: Self-reset, Latched, Disabled
setting should be "0". For previously installed transform-
SETTING
LOSS OF LIFE
PICKUP:
RUN
FLEXLOGIC OPERANDS
LOSS OF LIFE PKP
LOL > PKP
LOSS OF LIFE OP
5 SETTINGS
LOSS OF LIFE
828732A2.CDR
GE Multilin
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