Siemens siprotec 7SA6, Manual

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Technical Data
10-19
7SA6 Manual
C53000-G1176-C156
Echo delay time 0.00 s to 30.00 s (steps 0.01 s)
Echo impulse duration 0.00 s to 30.00 s (steps 0.01 s)
Time expiry tolerances 1 % of set value or 10 ms
The set times are pure delay times.
Overreach
Schemes via
Protection Data
Interface
(optional)
Methods Directional comparison pickup scheme
Permissive Overreach Transfer Trip
(POTT) (with overreaching zone Z1B)
Send signal prolongation 0.00 s to 30.00 s(steps 0.01 s)
Release signal prolongation 0.000 s to 30.000 s (steps 0.001 s)
Transient blocking time 0.00 s to 30.00 s (steps 0.01 s)
Waiting time for transient blocking 0.00 s to 30.00 s;
∞
(steps 0.01 s)
Echo delay time 0.00 s to 30.00 s (steps 0.01 s)
Echo pulse duration 0.00 s to30.00 s (steps 0.01 s)
Time expiry tolerances 1 % of set value or 10 ms
The set times are pure delay times
10.5 Earth Fault Protection in Earthed Systems (optional)
Characteristics Definite time stages (definite) 3I
0
>>>,3I
0
>>,3I
0
>
Inverse time stage (IDMT) 3I
0P
one of the characteristics according to
Figure 10-1 to 10-12 can be selected
Voltage-dependent stage (U
0
inverse) characteristic according to 10-8
Very High Set Stage Pickup value 3I
0
>>> 0.50 A to 25.00 A
1
) (steps 0.01 A)
T
3I0>>>
0.00 s to 30.00 s (steps 0.01 s)
or
∞
(ineffective)
Drop-off to pick-up ratio approx. 0.95 for I/I
N
≥
0.5
Pickup time approx. 35 ms
Drop-off time approx. 30 ms
Tolerances current 3 % of set value or 1% nominal current
time 1 % of set value or 10 ms
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.
High Set Stage Pickup value 3I
0
>> 0.20 A to 25.00 A
1
) (steps 0.01 A)
Delay time T
3I0>>
0.00 s to 30.00 s (steps 0.01 s)
or
∞
(ineffective)
Drop-off to pick-up ratio approx. 0.95 for I/I
N
≥
0.5
Pickup time approx. 35 ms
Drop-off time approx. 30 ms