Siemens SIPROTEC 7UT613 series, Руководство пользователя

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4 Technical Data
442
7UT613/63x Manual
C53000-G1176-C160-2
4.4 Time Overcurrent Protection for Phase and Residual Currents
Characteristics
Current Stages
Definite-time stages DT
I
Ph
>>, 3
I
0
>>,
I
Ph
>, 3
I
0
>
Inverse time stages
(acc. to IEC or ANSI) IT
I
P
, 3
I
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
Reset characteristics
(with disk emulation) IT For illustrations of possible reset time charac-
teristics see figures to 4-12 on the left-hand
side.
High current stages
I
Ph
>> 0.10 A to 35.00 A
1)
or
∞
(ineffective)
Steps 0.01 A
T
I
Ph>>
0.00 s to 60.00 s
or
∞
(no trip)
Steps 0.01 s
3
I
0
>> 0.10 A to 35.00 A
1)
or
∞
(ineffective)
Steps 0.01 A
T
3
I
0>>
0.00 s to 60.00 s
or
∞
(no trip)
Steps 0.01 s
Definite time current elements
(50Ns-2, 50Ns-1)
I
Ph
> 0.10 A to 35.00 A
1)
or
∞
(ineffective)
Steps 0.01 A
T
I
Ph>
0.00 s to 60.00 s
or
∞
(no trip)
Steps 0.01 s
3
I
0
> 0.10 A to 35.00 A
1)
or
∞
(ineffective)
Steps 0.01 A
T
3
I
0>
0.00 s to 60.00 s
or
∞
(no trip)
Steps 0.01 s
Inverse current elements (51Ns-
IEC)
I
P
0.10 A to 4.00 A
1)
Steps 0.01 A
T
I
P
0.05 s to 3.20 s
or
∞
(no trip)
Steps 0.01 s
3
I
0P
0.05 A to 4.00 A
1)
Steps 0.01 A
T
3
I
0P
0.05 s to 3.20 s
or
∞
(no trip)
Steps 0.01 s
Inverse current elements (51Ns-
ANSI)
I
P
0.10 A to 4.00 A
1)
Steps 0.01 A
D
I
P
0.50 s to 15.00 s
or
∞
(no trip)
Steps 0.01 s
3
I
0P
0.05 A to 4.00 A
1)
Steps 0.01 A
D
3
I
0P
0.50 s to 15.00 s
or
∞
(no trip)
Steps 0.01 s
Tolerances with inverse time
2)
currents 3 % of set value or 1 % rated current
times 1 % of set value or 10 ms
Tolerances with definite time (IEC)
2)
currents Pickup at 1.05
≤
I
/
I
P
≤
1.15;
or 1.05
≤
I
/3
I
0P
≤
1.15