Siemens 6MD85, Manual

Page: 1135 / 1256

Instrument current transformer 0.5 mA sec. (I
rated
= 1 A) or
2.5 mA sec. (I
rated
= 5 A)
Times
Operate time with time delay = 0 ms Approx. 37 ms + OOT 63 at 50 Hz
Approx. 22 ms + OOT at 60 Hz
Extension of the operate time during operation with
transformer inrush-current detection Approx. 10 ms
Dropout Time Approx. 20 ms + OOT
Frequency Operating Range
0.9 ≤ f/f
rated
≤ 1.1 According to specified tolerances
10 Hz ≤ f < 0.9f
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
(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 %)
Up to 50th harmonic, f
rated
= 50 Hz 3 % of the setting value or 20 mA (I
rated
= 1 A)
or 100 mA (I
rated
= 5 A), (f
rated
± 10 %)
Up to 50th harmonic, f
rated
= 60 Hz 4 % of the setting value or 20 mA (I
rated
= 1 A)
or 100 mA (I
rated
= 5 A), (f
rated
± 10 %)
Definite-time operate time 1 % of the setting value or 10 ms
Inverse-time operate time according to IEC, ANSI,
user-defined characteristic curve 5 % of the setting value or +2 % current tolerance or
10 ms
Inverse-time dropout time according to IEC, ANSI,
user-defined characteristic curve 5 % of the setting value or +2 % current tolerance or
10 ms
Direction-determination angle error 1
o
Influencing Variables for Thresholds
Transient excess pickup in method of measurement = fundamental component,
for τ > 100 ms (with complete unbalance) < 5 %
63 OOT (Output Operating Time) additional delay of the output medium used, for example 5 ms with fast relays
Technical Data
11.10 Directional Time-Overcurrent Protection, Phases
SIPROTEC 5, High-Voltage Bay Controller, Manual 1135
C53000-G5040-C015-9, Edition 11.2017