GE T60 Instruction Manual page 199

5 SETTINGS
• XFMR HST PICKUP: Enter the hottest-spot temperature required for operation of the element. This setting should be
based on the maximum permissible hottest-spot temperature under emergency transformer loading conditions and
maximum ambient temperature.
• XFMR HST DELAY: Enter an appropriate time delay before operation of the element.
e) AGING FACTOR
PATH: SETTINGS GROUPED ELEMENTS
AGING FACTOR
MESSAGE
MESSAGE
MESSAGE
MESSAGE
The Aging Factor element detects transformer aging in per-unit normal insulation aging. The element can be set for alarm
or trip whenever the computed aging factor is greater than the user-defined pickup setting for the specified time delay.
• AGING FACTOR PICKUP: Enter a value above which the aging factor element will operate. The setting should be
greater than the maximum permissible aging factor under emergency loading conditions and maximum ambient tem-
perature.
GE Multilin
Courtesy of NationalSwitchgear.com
SETTING
HOTTEST-SPOT t °
FUNCTION:
Disable=0
Enable=1
SETTING
AND
HOTTEST-SPOT t °
BLOCK:
Off=0
ACTUAL VALUE
HOTTEST-SPOT t°
Figure 5–46: TRANSFORMER HOTTEST-SPOT TEMPERATURE LOGIC
SETTING GROUP 1(6)
AGING FACTOR
FUNCTION: Disabled
AGING FACTOR PICKUP:
2.0 pu
AGING FACTOR
DELAY:
AGING FACTOR BLOCK:
Off
AGING FACTOR TARGET:
Self-Reset
SETTING
AGING FACTOR
FUNCTION:
Disable=0
Enable=1
SETTING
AND
AGING FACTOR
BLOCK:
Off=0
ACTUAL VALUE
AGING FACTOR-FAA
Figure 5–47: AGING FACTOR LOGIC
T60 Transformer Management Relay
SETTINGS
HOTTEST-SPOT t °
PICKUP:
HOTTEST-SPOT t °
PICKUP TIME DELAY:
RUN
FLEXLOGIC OPERANDS
XFMR HST-SPOT t C PKP
t C > PKP °
XFMR HST-SPOT t C DPO
XFMR HST-SPOT t C OP
t
PKP
TRANSFORMER
Range: Disabled, Enabled
Range: 1.1 to 10.0 pu in steps of 0.1
Range: 0 to 30000 min. in steps of 1
10 min.
Range: FlexLogic™ operand
Range: Self-reset, Latched, Disabled
SETTINGS
AGING FACTOR
PICKUP:
AGING FACTOR
PICKUP DELAY:
FLEXLOGIC OPERANDS
RUN
AGING FACTOR PKP
FAA > PKP
AGING FACTOR DPO
AGING FACTOR OP
t
PKP
5.5 GROUPED ELEMENTS
°
°
°
828731A3.CDR
AGING FACTOR
828733A2.CDR
5
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