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Technical Data
4.3 Time Overcurrent Protection
Inverse Current Stage (IEC)
Pickup value I
(phases)
P
Pickup value 3I
(earth)
0P
Time multipliers
Additional time delays
Characteristics
Tolerances currents
Tolerances times
Defined times
Inverse Current Stage (ANSI)
Pickup value I
(phases)
P
Pickup value 3I
(earth)
0P
Time multipliers
Additional time delays
Characteristics
Tolerances currents
Tolerances times
Defined times
246
for I
= 1 A
0.10 A to 4.00 A
N
or ∞ (ineffective)
for I
= 5 A
0.50 A to 20.00 A
N
or ∞ (ineffective)
for I
= 1 A
0.05 A to 4.00 A
N
or ∞ (ineffective)
for I
= 5 A
0.25 A to 20.00 A
N
or ∞ (ineffective)
T
(phases)
0.05 s to 3.00 s
IP
or ∞ (ineffective)
T
(earth)
0.05 s to 3.00 s
3I0P
or ∞ (ineffective)
T
(phases) 0.00 s to 30.00 s
IP delayed
T
(earth) 0.00 s to 30.00 s
3I0P delayed
See Figure 4-1
Pickup values at 1.05 ≤ I/I
or 1.05 ≤ I/3I
5 % ± 15 ms for 2 ≤ I/I
or 2 ≤ I/3I
1 % of setting value or 10 ms
for I
= 1 A
0.10 A to 4.00 A
N
or ∞ (ineffective)
for I
= 5 A
0.50 A to 20.00 A
N
or ∞ (ineffective)
for I
= 1 A
0.05 A to 4.00 A
N
or ∞ (ineffective)
for I
= 5 A
0.25 A to 20.00 A
N
or ∞ (ineffective)
D
(phases)
0.50 s to 15.00 s
IP
or ∞ (ineffective)
D
(earth)
0.50 s to 15.00 s
3I0P
or ∞ (ineffective)
T
(phases) 0.00 s to 30.00 s
IP delayed
T
(earth) 0.00 s to 30.00 s
3I0P delayed
See Figure 4-2 and 4-3
Pickup values at 1.05 ≤ I/I
or 1.05 ≤ I/3I
5 % ± 15 ms for 2 ≤ I/I
or 2 ≤ I/3I
1 % of setting value or 10 ms
Increments 0.01 A
Increments 0.01 A
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
≤ 1.15
P
≤ 1.15
0P
≤ 20 and 0.1 ≤ T
P
≤ 20 and 0.1 ≤ T
/s ≤ 2
0P
3I0P
Increments 0.01 A
Increments 0.01 A
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
Increments 0.01 s
≤ 1.15
P
≤ 1.15
0P
≤ 20 and D
P
IP
≤ 20 and D
/s ≥ 1
0P
3I0P
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009
/s ≤ 2
IP
/s ≥ 1
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