Settings - Siemens SIPROTEC 4 7UT6 Series Manual

Table 2-9
Winding exponent
Insulation temperature gradient
Additional Thermal Overload Protection Function
In the aforementioned description, the first thermal overload protection is described respectively. The differ-
ences in the parameter addresses and message numbers of the first and second thermal overload protection
are illustrated in the following table. The positions marked by x are identical.
1. thermal overload protection function
2. thermal overload protection function
2.9.6

Settings

Addresses which have an appended "A" can only be changed with DIGSI, under "Additional Settings".
Addr. Parameter
4201 THERM. OVERLOAD
4202 K-FACTOR
4203 TIME CONSTANT
4204 Θ ALARM
4205 I ALARM
4207A Kτ-FACTOR
4208A T EMERGENCY
4209A I MOTOR START
4210 TEMPSENSOR RTD
4211 TEMPSENSOR RTD
4212 TEMP. RISE I
4213 TEMP. RISE I
4220 OIL-DET. RTD
4221 OIL Sensor RTD
4222 HOT SPOT ST. 1
4223 HOT SPOT ST. 1
4224 HOT SPOT ST. 2
SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016
Thermal characteristics of power transformers
Cooling method:
Y
H
gr
Setting Options
OFF
ON
Block relay
Alarm Only
0.10 .. 4.00
1.0 .. 999.9 min
50 .. 100 %
0.10 .. 4.00 I/InS
1.0 .. 10.0
10 .. 15000 sec
0.60 .. 10.00 I/InS; ∞
1 .. 6
1 .. 12
40 .. 200 °C
104 .. 392 °F
1 .. 6
1 .. 12
98 .. 140 °C
208 .. 284 °F
98 .. 140 °C
Distribution Medium and large power
transformers transformers
ON..
ON..
1.6 1.8
23 26
Parameter
addresses
42xx
44xx
Default Setting
OFF
1.10
100.0 min
90 %
1.00 I/InS
1.0
100 sec
∞ I/InS
1
1
100 °C
212 °F
1
1
98 °C
208 °F
108 °C
2.9 Thermal Overload Protection
OF.. OD..
1.8 2.0
22 29
Message no.
044.xxxx(.01)
204.xxxx(.01)
Comments
Thermal Overload Protection
K-Factor
Thermal Time Constant
Thermal Alarm Stage
Current Overload Alarm Setpoint
Kt-FACTOR when motor stops
Emergency Time
Current Pickup Value of Motor
Starting
Temperature sensor connected to
RTD
Temperature sensor connected to
RTD
Temperature Rise at Rated Sec.
Curr.
Temperature Rise at Rated Sec.
Curr.
Oil-Detector conected at RTD
Oil sensor connected to RTD
Hot Spot Temperature Stage 1
Pickup
Hot Spot Temperature Stage 1
Pickup
Hot Spot Temperature Stage 2
Pickup
Functions
209