Siemens siprotec 7SA6 - Page 699

Technical Data
10-317SA6 Manual
C53000-G1176-C156
Overcurrent stages Pickup values I
P
(phases) 0.10 A to 25.00 A
1
)(steps0.01A)
or
∞ (ineffective)
3I
0P
(earth) 0.05 A to 25.00 A
1
)(steps0.01A)
or
∞ (ineffective)
Time delays T
IPh>
(phases) 0.00 s to 30.00 s (steps 0.01 s)
or
∞ (ineffective)
T
3I0>
(earth) 0.05 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
Pick-up time ca. 25 ms
Drop-off time ca. 30 ms
Tolerances currents 3 % of set value or 1% nominal current
times 1%ofsetvalueor10ms
The set times are pure delay times.
1
) Secondary values based on I
N
=1A;forI
N
= 5 A they must be multiplied by 5.
Overcurrent stages
(inverse time acc.
IEC)
Pickup values I
P
(phases) 0.10 A to 4.00 A
1
)(steps0.01A)
or
∞ (ineffective)
3I
0P
(earth) 0.05 A to 4.00 A
1
)(steps0.01A)
or
∞ (ineffective)
Time factors T
IP
(phases) 0.05 s to 3.00 s (steps 0.01 s)
or
∞ (ineffective)
T
3I0P
(earth) 0.05 s to 3.00 s (steps 0.01 s)
or
∞ (ineffective)
Additional time delays T
IPadd
(phases.)0.00 s to 30.00 s (steps 0.01 s)
T
3I0Padd
(earth) 0.00 s to 30.00 s (steps 0.01 s)
Characteristics see Figure 10-1 (in Section 10.5)
Tolerances currents Pick-up
at 1.05
≤ I/I
P
≤ 1.15;
or 1.05
≤ I/3I
0P
≤ 1.15
times 5 % ± 15 ms for 2
≤ I/I
P
≤ 20
and T
IP
/s ≥ 1;
or 2
≤ I/3I
0P
≤ 20
and T
3I0P
/s ≥ 1
def. times 1 % of set value or 10 ms
The set times are pure delay times with definite time protection.
1
) Secondary values based on I
N
=1A;forI
N
= 5 A they must be multiplied by 5.
Overcurrent stages
(inverse time acc.
ANSI)
Pickup values I
P
(phases) 0.10 A to 4.00 A
1
)(steps0.01A)
or
∞ (ineffective)
3I
0P
(earth) 0.05 A to 4.00 A
1
)(steps0.01A)
or
∞ (ineffective)