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4 Technical Data
Pickup value 3I
> (earth)
0
Delay T
> (phases)
IPh
Delay T
> (earth)
3I0
Dropout Ratio
Pickup times (fast relays/high-speed relays)
Dropout times
Tolerances
The set times are pure delay times
Inverse Time Overcurrent Stage (IEC)
Pickup value I
(phases)
P
Pickup value 3I
(earth)
0P
Time factors
Additional time delays
Characteristics
Tolerances currents
Tolerances times
Defined times
Inverse Time Overcurrent Stage (ANSI)
Pickup value I
(phases)
P
Pickup value 3I
(earth)
0P
556
for I
= 1 A 0.05 A to 25.00 A
N
Or ∞ (ineffective)
for I
= 5 A 0.25 A to 125.00 A
N
Or ∞ (ineffective)
0.00 s to 30.00 s
Or ∞ (ineffective)
0.00 s to 30.00 s
Or ∞ (ineffective)
Approx. 0.95 for I/I
approx. 30/25 ms
Approx. 30 ms
Currents
3 % of setting value or 1 % nominal current
Times
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)
T
(phas-
0.05 s to 3.00 s
IP
or ∞ (ineffective)
es)
T
0.05 s to 3.00 s
3I0P
or ∞ (ineffective)
(earth)
T
0.00 s to 30.00 s
IP delayed
(phases)
T
0.00 s to 30.00 s
3I0P delayed
(earth)
See Figure 4-1
Pickup values at 1.05 ≤ I/I
or 1.05 ≤ I/3I
0P
5 % ± 15 ms for 2 ≤ I/I
or 2 ≤ I/3I
≤ 20 and T
0P
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)
Increments 0.01 A
Increments 0.01 s
Increments 0.01 s
≥ 0.5
N
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
≤ 20 and T
/s ≥ 1
P
IP
/s ≥ 1
3I0P
Increments 0.01 A
Increments 0.01 A
7SD5 Manual
C53000-G1176-C169-1
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