Siemens 6MD85, Manual

Page: 1138 / 1256

Maximum time of the characteristic curve 0.00 s to 200.00 s Increments of 0.01 s
Knee-point value 0.030 A to 25.000 A 0.001 A
Current at minimum time of the curve 0.030 A to 25.000 A 0.001 A
Time factor 0.05 to 15.00 Increments of 0.01
[dwdrloinkn-171013, 1, en_US]
Figure 11-14 Operate Curve of the Logarithmic Inverse Time with Knee-Point Characteristic (In the Example
of
Threshold
=
0.004 A
)
Dropout value for Stage Type Logarithmic Inverse Time with Knee-Point Overcurrent Protection
Dropout ratio Approx. 0.95 * threshold value
Setting Values for Stage Type User-Defined Characteristic Curve Overcurrent Protection
Time multiplier 0.05 to 15.00 Increments of 0.01
X values of the operate curve 1.00 p. u. to 66.67 p. u. Increments of 0.01 p. u.
Y values of the operate curve 0.00 s to 999.00 s Increments of 0.01 s
Number of value pairs for the dropout
characteristic curve 2 to 30 Increments of 1
X values of the dropout characteristic
curve 0.05 p. u. to 0.95 p. u. Increments of 0.01 p. u.
Y values of the dropout characteristic
curve 0.00 s to 999.00 s Increments of 0.01 s
Dropout Values for Stage Type User-Defined Characteristic Curve Overcurrent Protection
Disk emulation Approx. 0.90 * threshold value
Technical Data
11.11 Directional Time-Overcurrent Protection, Ground
1138 SIPROTEC 5, High-Voltage Bay Controller, Manual
C53000-G5040-C015-9, Edition 11.2017