Siemens SIPROTEC 7SD610 - Page 341

4.8 Backup Time Overcurrent Protection
341
7SD610 Manual
C53000-G1176-C145-4
Inverse Current Stage (ANSI)
Pickup value Ip> Dir.I
(directional phases)
for I
N
= 1 A 0.10 A to 4.00 A
or ∞ (disabled)
Increment 0.01 A
for I
N
= 5 A 0.50 A to 20.00 A
or ∞ (disabled)
Pickup threshold3I0p Dir.
(Earth directional)
for I
N
= 1 A 0.05 A to 4.00 A
or ∞ (disabled)
Increment 0.01 A
for I
N
= 5 A 0.25 A to 20.00 A
or ∞ (disabled)
Time factors
(directional stages)
T Ip Dir.
(Phases)
0.05 s to 3.00 s
or ∞ (ineffective)
Increments 0.01 s
T 3I0p Dir. (Earth) 0.05 s to 3.00 s
or ∞ (ineffective)
Increments 0.01 s
Additional time delays
(directional stages)
T Ip Add Dir.
(Phases)
0.00 s to 30.00 s Increments 0.01 s
T 3I0p Add Dir.
(Earth)
0.00 s to 30.00 s Increments 0.01 s
Tolerances currents
(directional stages)
Pickup at 1.05 ≤ I/I
Pger
≤ 1.15
or 1.05 ≤ I/3I
0Pgeer
≤ 1.15
Tolerances times
(directional stages)
5% ± 15 ms for 2 ≤ I/I
Pger
≤ 20 and 0.1 ≤ T
IPger
/s ≤ 2
or 2 ≤ I/3I
0Pger
≤ 20 and 0.1 ≤ T
3I0Pger
/s ≤ 2
Characteristics See Figure 4-2
Defined times 1 % of setting value or 10 ms
Pickup value Ip>I
(phases)
for I
N
= 1 A 0.10 A to 4.00 A
or ∞ (disabled)
Increment 0.01 A
for I
N
= 5 A 0.50 A to 20.00 A
or ∞ (disabled)
Pickup threshold3I0p PICKUP
(Earth)
for I
N
= 1 A 0.05 A to 4.00 A
or ∞ (disabled)
Increment 0.01 A
for I
N
= 5 A 0.25 A to 20.00 A
or ∞ (disabled)
Time factors Time Dial TD Ip
(Phases)
0.50 s to 15.00 s
or ∞ (ineffective)
Increments 0.01 s
TimeDial TD3I0p
(Earth)
0.50 s to 15.00 s
or ∞ (ineffective)
Increments 0.01 s
Additional time delays
T Ip Add (Phases) 0.00 s to 30.00 s Increments 0.01 s
T 3I0p Add (Earth) 0.00 s to 30.00 s Increments 0.01 s
Tolerances currents Pickup at 1.05 ≤ I/I
P
≤ 1.15
or 1.05 ≤ I/3I
0P
≤ 1.15
Tolerances times 5 % ± 15 ms for 2 ≤ I/I
P
≤ 20 and D
IP
/s ≥ 1
or 2 ≤ I/3I
0P
≤ 20 and D
3I0P
/s ≥ 1
Pickup value Ip> Dir.I
(directional phases)
for I
N
= 1 A 0.10 A to 4.00 A
or ∞ (disabled)
Increment 0.01 A
for I
N
= 5 A 0.50 A to 20.00 A
or ∞ (disabled)
Pickup value 3I0p Dir.I
(directional earth)
for I
N
= 1 A 0.05 A to 4.00 A
or ∞ (disabled)
Increment 0.01 A
for I
N
= 5 A 0.25 A to 20.00 A
or ∞ (disabled)
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