4 Technical Data
466
7SA522 Manual
C53000-G1176-C155-3
Inverse Time Overcurrent Stage (ANSI)
Stub Fault Protection
Pickup value I
P
(phases) for I
N
= 1 A 0.10 A to 4.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
N
= 5 A 0.50 A to 20.00 A
or ∞ (ineffective)
Pickup value 3I
0p PICKUP
(earth) for I
N
= 1 A 0.05 A to 4.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
N
= 5 A 0.25 A to 20.00 A
or ∞ (ineffective)
Time factors D
IP
(phases)
0.50 s to 15.00 s
or ∞ (ineffective)
Increments 0.01 s
D
3I0p Time Dial
(earth)
0.50 s to 15.00 s
or ∞ (ineffective)
Increments 0.01 s
Additional time delays T
IP delayed
(phases)
0.00 s to 30.00 s Increments 0.01 s
T
3I0p add T-
Delay
(earth)
0.00 s to 30.00 s Increments 0.01 s
Characteristics See Figure 4-2 and 4-3
Tolerances currents Pick-up at 1.05 ≤ I/I
P
≤ 1.15
or 1.05 ≤ I/3I
0P
≤ 1.15
Tolerances times 5 % ± 15 ms for 2 ≤ I/3I
OP
≤ 20 and D
3I0P
/s ≥ 1
or 2 ≤ I/3I
0p PICKUP
≤ 20 and D
3I0p Time Dial
/s ≥ 1
Defined times 1 % of setting value or 10 ms
Pickup value I
Ph
>>> (phases) for I
N
= 1 A 0.10 A to 25.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
N
= 5 A 0.50 A to 125.00 A
or ∞ (ineffective)
Pickup value 3I
0
>>> (earth) for I
N
= 1 A 0.05 A to 25.00 A
or ∞ (ineffective)
Increments 0.01 A
for I
N
= 5 A 0.25 A to 125.00 A
or ∞ (ineffective)
Delays T
IPh
>>> 0.00 s to 30.00 s
or ∞ (ineffective)
Increments 0.01 s
T
3I0
>>> 0.00 s to 30.00 s
or ∞ (ineffective)
Increments 0.01 s
Drop-off to pick-up ratio Approx. 0.95 for I/I
N
≥ 0.5
Pickup times Approx. 25 ms
Drop-off times Approx. 30 ms
Tolerances currents Currents 3 % of setting value or 1 % nominal current
Times 1 % of setting value or 10 ms
The set times are pure delay times.
To Next Page
Loading...
Need help?
General
