Stage With Inverse-Time Characteristic Curve - Siemens SIPROTEC 5 Technical Data Manual

11.15

Stage with Inverse-Time Characteristic Curve

Setting Values
Method of measurement
Threshold value
Dropout
Time multiplier
Dropout
The greater dropout differential (= | pickup value – dropout value |) of the following 2 criteria
applies:
Dropout
Minimum absolute dropout differential
Protection-class current transformer
Instrument current transformer
Reset of the Integration Timer
Instantaneous
Disk emulation
Operate Curves and Dropout Characteristic Curves According to IEC
Extension of the operate time during operation with
transformer inrush-current detection
The operate curves and dropout characteristic curves according to IEC can be found in the Technical Data
chapter under Inverse-Time Overcurrent Protection.
Operate Curves and Dropout Characteristic Curves According to ANSI/IEEE
The operate curves and dropout characteristic curves according to ANSI/IEEE can be found in the Technical
Data chapter under Inverse-Time Overcurrent Protection.
Frequency Operating Range
0.9 ≤ f/f ≤ 1.1
rated
10 Hz ≤ f < 0.9 f
1.1 f < f ≤ 80 Hz
rated
f < 10 Hz
f > 80 Hz
68 If you have selected the method of measurement = RMS value, do not set the threshold value under 0.1 l
SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-A, Edition 05.2018
For I = 1 A
68
rated
For I = 5 A
rated
rated
11.15 Stage with Inverse-Time Characteristic Curve
Fundamental component
RMS value
0.010 A to 35.000 A
0.05 A to 175.00 A
Disk emulation
Instantaneous
0.05 to 15.00
95 % of 1.1 ⋅ threshold value
15 mA sec. (I = 1 A) or
rated
75 mA sec. (I = 5 A)
rated
0.5 mA sec. (I = 1 A) or
rated
2.5 mA sec. (I = 5 A)
rated
With dropout
Approx. < 0.90 ⋅ threshold value
Approx. 10 ms
According to specified tolerances
Slightly expanded tolerances
Active
Technical Data
–
Increments of 0.001 A
Increments of 0.01 A
–
Increments of 0.01
.
rated,sec
1163