Siemens siprotec 7SA6, Manual

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Technical Data
10-21
7SA6 Manual
C53000-G1176-C156
Time factor T
3I0P
0.05 s to 15.00 s (steps 0.01 s)
or
∞
(ineffective)
Maximum time T
3I0P max
0.00 s to 30.00 s (steps 0.01 s)
or
∞
(ineffective)
Minimum time T
3I0P min
0.00 s to 30.00 s (steps 0.01 s)
or
∞
(ineffective)
Additional time delay T
3I0Pverz
0.00 s to 30.00 s (steps 0.01 s)
characteristics see Figure 10-4
Tolerances
times 5 % ± 15 ms für 2
≤
I/3I
0P
≤
20
und T
3I0P
/s
≥
1
def. times 1 % of set value or 10 ms
1) Secondary values based on I
N
= 1 A; for I
N
= 5 A the current values must be multiplied by 5.
Zero Sequence
Voltage - U
0
inverse
Pickup values 3I
0P
0.05 A to 25.00 A
1
) (steps 0.01 A)
or 0.003 A bis 25.000 A
1
) (steps 0,001 A)
3U
0
> 1.0 V to 10.0 V (steps 0.1 V)
Voltage factor U
0 inv.min
0.1 V to 5 V (steps 0.1 V)
characteristics see Figure 10-5
Additional delay times Tforw 0.00 s to 32.00 s (steps 0.01 s)
Trev 0.00 s to 32.00 s (steps 0.01 s)
characteristics see Figure 10-5
Tolerances times 1 % of set value or 10 ms
Drop-off to pick-up ratio current approx. 0.95 for I/I
N
≥
0.5
voltage approx. 0.95 for 3U
0
≥
1 V
The set times are pure delay times.
1) Secondary values based on I
N
= 1 A; for I
N
= 5 A the current values must be multiplied by 5.
Inrush Stabilization
Second harmonic content for inrush 10 % to 45 % (steps 1 %)
blocking referred to fundamental wave
Inrush blocking is cancelled above 0.50 A to 25.00 A
1
) (steps 0.01 A)
Inrush stabilization may be switched effective or ineffective for each individual stage.
1
) Secondary values based on I
N
= 1 A; for I
N
= 5 A they must be multiplied with 5.
Direction
Determination Direction determination with I
E
(= 3I
0
) and 3U
0
with I
E
(= 3I
0
)
and I
Y
(transformer star-point current)
with 3I
2
and 3U
2
(negative sequence quantities)
Limit values
Displacement voltage
3U
0
> 0.5 V to 10.0 V (steps 0.1 V)
Starpoint current of a power
transformer I
Y
> 0.05 A to 1.00 A
1
) (steps 0.01 A)