Siemens 6MD85, Manual

Page: 1121 / 1256

Absolute pickup value 1 A @ 50 and 100 Irated 0.000 A to 35.000 A Increments of 0.001 A
5 A @ 50 and 100 Irated 0.00 A to 175.00 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
Dropout Disk emulation
Instantaneous –
Time multiplier 0.05 to 15.00 Increments of 0.01
Number of value pairs for the operate curve 2 to 30 Increments of 1
X values of the operate curve 1.00 p.u. to 20.00 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
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 or 95 % of the absolute
pickup 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
Frequency Operating Range
0.9 ≤ f/f
rated
≤ 1.1 According to specified tolerances
10 Hz ≤ f < 0.9 f
rated
1.1 f
rated
< f ≤ 80 Hz
Slightly expanded tolerances
f < 10 Hz
f > 80 Hz Active
Tolerances
Currents, method of measurement = fundamental
component 1 % of the setting value or 5 mA (I
rated
= 1 A)
or 25 mA (I
rated
= 5 A), (f
rated
± 10 %)
Currents, method of measurement = RMS value, no filter applied
(33 % harmonics, in relation to fundamental component)
Up to 30th harmonic
1 % of the setting value or 5 mA (I
rated
= 1 A)
or 25 mA (I
rated
= 5 A), (f
rated
± 10 %)
Technical Data
11.8 Overcurrent Protection, Phases
SIPROTEC 5, High-Voltage Bay Controller, Manual 1121
C53000-G5040-C015-9, Edition 11.2017