Siemens 7SJ82, Manual

Page: 1423 / 1638

Influencing Variables for Thresholds
Transient excess pickup in method of measurement =
fundamental component, for τ > 100 ms (with
complete unbalance) < 5 %
Stage with Inverse-Time Characteristic Curve
Setting Value for the Function Block Filter
h(0) -100.000 to 100.000 Increments of 0.001
h(1) -100.000 to 100.000 Increments of 0.001
h(2) -100.000 to 100.000 Increments of 0.001
h(3) -100.000 to 100.000 Increments of 0.001
h(4) -100.000 to 100.000 Increments of 0.001
Setting Values for Protection Stage
Method of measurement Fundamental component
RMS value –
Threshold value 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
Dropout Disk emulation
Instantaneous –
Time multiplier 0.00 to 15.00 Increments of 0.01
Pickup delay 0.00 s to 60.00 s Increments of 0.01 s
Minimum time of the curve 0.00 s to 1.00 s Increments of 0.01 s
Additional time delay 0.00 s to 60.00 s Increments of 0.01 s
Dropout
The greater dropout differential (=
| pickup value – dropout value |
) of the following 2 criteria
applies:
Dropout 95 % of 1.1 ⋅ threshold value
Minimum absolute dropout differential
Protection-class current transformer
15 mA sec. (I
rated
= 1 A) or
75 mA sec. (I
rated
= 5 A)
Instrument current transformer 0.5 mA sec. (I
rated
= 1 A) or
2.5 mA sec. (I
rated
= 5 A)
Reset of the Integration Timer
Instantaneous With dropout
Disk emulation Approx. < 0.90 ⋅ threshold value
Operate Curves and Dropout-Time Characteristic Curves according to IEC
Extension of the operate time during operation with
transformer inrush-current detection Approx. 10 ms
12.5.2
Technical Data
12.5 Overcurrent Protection, Phases
SIPROTEC 5, Overcurrent Protection, Manual 1423
C53000-G5040-C017-8, Edition 07.2017