Siemens 7SJ82 - Thermal Overload Protection, User-Defined Characteristic Curve

Thermal Overload Protection, User-Defined Characteristic Curve
Setting Values
Threshold current
warning
1 A @ 50 and 100 Irated 0.030 A to 35.000 A Increments of 0.001 A
5 A @ 50 and 100 Irated 0.15 A to 175.00 A Increments of 0.01 A
1 A @ 1.6 Irated 0.001 A to 1.600 A Increments of 0.001 A
5 A @ 1.6 Irated 0.005 A to 8.000 A Increments of 0.001 A
Threshold thermal warn. 50 % to 100 % Increments of 1 %
Dropout threshold operate 50 % to 99 % Increments of 1 %
Emerg. start T overtravel 0 s to 15 000 s Increments of 10 s
Imax thermal 1 A @ 50 and 100 Irated 0.030 A to 10.000 A Increments of 0.001 A
5 A @ 50 and 100 Irated 0.15 A to 50.00 A Increments of 0.01 A
1 A @ 1.6 Irated 0.001 A to 1.600 A Increments of 0.001 A
5 A @ 1.6 Irated 0.005 A to 8.000 A Increments of 0.001 A
Imin cooling 1 A @ 50 and 100 Irated 0.000 A to 10.000 A Increments of 0.001 A
5 A @ 50 and 100 Irated 0.00 A to 50.00 A Increments of 0.01 A
1 A @ 1.6 Irated 0.000 A to 1.600 A Increments of 0.001 A
5 A @ 1.6 Irated 0.000 A to 8.000 A Increments of 0.001 A
Curve based on preload 1 % to 100 % Increments of 1 %
Number of value pairs for the operate curve 2 to 30 Increments of 1
X values of the operate curve 1.10 p.u. to 20.00 p. u. Increments of 0.0 p.u.
Y values of the operate curve 1.00 s to 20 000.00 s Increments of 0.01 s
Dropout Ratios
Tripping threshold (fixed at 100 %)
Dropout if value drops below operate indication
dropout threshold
Thermal warning threshold About 0.99 of the setting value
Current warning threshold About 0.95 of the setting value
Frequency Range of the Input Signals
The function captures input signals up to the 50th harmonic.
Tolerances
With reference to k ⋅ I
rated
For I
rated
= 1 A 2 % or 10 mA, class 2 % acc. to IEC 60255-8
For I
rated
= 5 A 2 % or 50 mA, class 2 % acc. to IEC 60255-8
With reference to operate time 3 % or 1 s, class 3 % acc. to IEC 60255-8
for I/(k ⋅ I
rated
) > 1.25
12.23
Technical Data
12.23 Thermal Overload Protection, User-Defined Characteristic Curve
SIPROTEC 5, Overcurrent Protection, Manual 1497
C53000-G5040-C017-8, Edition 07.2017