Time Overcurrent Protection For Phase And Residual Currents - Siemens SIPROTEC 7UT613 series Manual

4 Technical Data
4.4

Time Overcurrent Protection for Phase and Residual Currents

Characteristics
Current Stages
442
Definite-time stages
Inverse time stages
(acc. to IEC or ANSI)
Reset characteristics
(with disk emulation)
High current stages
Definite time current elements
(50Ns-2, 50Ns-1)
Inverse current elements (51Ns-
IEC)
Inverse current elements (51Ns-
ANSI)
Tolerances with inverse time
currents
times
Tolerances with definite time (IEC)
currents
I
DT >>, 3I
Ph
I
IT , 3I
P 0P
one of the tripping curves depicted in figures
to 4-12 on the right-hand side may be select-
ed;
alternatively user specified trip and reset char-
acteristic
IT For illustrations of possible reset time charac-
teristics see figures to 4-12 on the left-hand
side.
I
>> 0.10 A to 35.00 A
Ph
or ∞ (ineffective)
T 0.00 s to 60.00 s
IPh>>
or ∞ (no trip)
3I >> 0.10 A to 35.00 A
0
or ∞ (ineffective)
T 0.00 s to 60.00 s
3I0>>
or ∞ (no trip)
I
> 0.10 A to 35.00 A
Ph
or ∞ (ineffective)
T 0.00 s to 60.00 s
IPh>
or ∞ (no trip)
3I > 0.10 A to 35.00 A
0
or ∞ (ineffective)
T 0.00 s to 60.00 s
3I0>
or ∞ (no trip)
I
0.10 A to 4.00 A
P
T 0.05 s to 3.20 s
IP
or ∞ (no trip)
3I 0.05 A to 4.00 A
0P
T 0.05 s to 3.20 s
3I0P
or ∞ (no trip)
I
0.10 A to 4.00 A
P
D 0.50 s to 15.00 s
IP
or ∞ (no trip)
3I 0.05 A to 4.00 A
0P
D 0.50 s to 15.00 s
3I0P
or ∞ (no trip)
2)
3 % of set value or 1 % rated current
1 % of set value or 10 ms
2)
Pickup
>>, I
>, 3I >
0 Ph 0
1)
Steps 0.01 A
Steps 0.01 s
1)
Steps 0.01 A
Steps 0.01 s
1)
Steps 0.01 A
Steps 0.01 s
1)
Steps 0.01 A
Steps 0.01 s
1)
Steps 0.01 A
Steps 0.01 s
1)
Steps 0.01 A
Steps 0.01 s
1)
Steps 0.01 A
Steps 0.01 s
1)
Steps 0.01 A
Steps 0.01 s
at 1.05 ≤ I/I
or 1.05 ≤ I/3I0P ≤ 1.15
7UT613/63x Manual
C53000-G1176-C160-2
≤ 1.15;
P