The Cooling time therm.replica parameter is used to define the cooling characteristics of the thermal
replica. If concrete specifications are not given, the default value can be maintained.
Parameter: V/f/time value pairs (operate curve)
With this parameter, the number of potting points along the thermal operate curve are defined. This is
required for the calculation. The number of points defines the accuracy of the image of the specified charac-
teristic curve. Adjust the value individually.
Set a V/f/time value pair for each characteristic-curve point. The setting depends on the characteristic curve
you want to realize. The default settings refer to a Siemens standard transformer.
NOTE
The value pairs must be entered in continuous order.
NOTE
Note that the V/f values that are lower than the V/f values of the smallest characteristic-curve point do not
extend the operate time. Up to the smallest characteristic-curve point, the characteristic curves runs
parallel to the V/f axis. V/f values that are larger than the V/f value of the largest characteristic-curve point
do not reduce the operate time. From the largest characteristic-curve point, the pickup characteristic runs
parallel to the V/f axis (seeCharacteristic Curve, Page 819).
Settings
Addr.
Parameter C Setting Options Default Setting
Definite-T 1
_:13621:1 Definite-T 1:Mode
•
off
•
on
•
test
off
_:13621:2 Definite-T 1:Operate &
flt.rec. blocked
•
no
•
yes
no
_:13621:3 Definite-T 1:Threshold 1.00 to 1.40 1.40
_:13621:6 Definite-T 1:Operate delay 0.00 s to 60.00 s 1.00 s
General
_:13591:1 Therm.charact.:Mode
•
off
•
on
•
test
off
_:13591:2 Therm.charact.:Operate &
flt.rec. blocked
•
no
•
yes
no
_:13591:3 Therm.charact.:Threshold 1.00 to 1.20 1.10
_:13591:101 Therm.charact.:Warning
delay
0.00 s to 60.00 s 10.00 s
_:13591:102 Therm.charact.:Cooling
time therm.replica
0 s to 100000 s 3600 s
Information List
No.
Information Data Class
(Type)
Type
General
_:2311:322 General:V/f MV O
Group indicat.
_:4501:55 Group indicat.:Pickup ACD O
6.39.3.3
6.39.3.4
Protection and Automation Functions
6.39 Overexcitation Protection
822 SIPROTEC 5, Overcurrent Protection, Manual
C53000-G5040-C017-8, Edition 07.2017
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