Siemens SIPROTEC 4 7VK61 - Page 240

Pickup value 3Ι
0
>> (earth) for Ι
N
= 1 A
0.05 A to 25.00 A
or ∞ (ineffective)
Increments 0.01 A
for Ι
N
= 5 A
0.25 A to 125.00 A
or ∞ (ineffective)
Delay T
ΙPh
>> (phases) 0.00 s to 30.00 s
or ∞ (ineffective)
Increments 0.01 s
Delay T
3Ι0
>> (earth) 0.00 s to 30.00 s
or ∞ (ineffective)
Increments 0.01 s
Dropout ratio
Approx. 0.95 for Ι/Ι
N
≥ 0.5
Pickup times Approx. 25 ms
Dropout times Approx. 30 ms
Tolerances Currents 3 % of setting value or 1 % nominal current
Times 1 % of setting value or 10 ms
The set times are pure delay times
Overcurrent Stages
Pickup value Ι
Ph
> (phases)
Pickup value Ι
Ph
>>>(phases)
for Ι
N
= 1 A
0.10 A to 25.00 A
or ∞ (ineffective)
Increments 0.01 A
for Ι
N
= 5 A
0.50 A to 125.00 A
or ∞ (ineffective)
Pickup value 3Ι
0
> (earth)
Pickup value 3Ι
0
> (earth)
for Ι
N
= 1 A
0.05 A to 25.00 A
or ∞ (ineffective)
Increments 0.01 A
for Ι
N
= 5 A
0.25 A to 125.00 A
or ∞ (ineffective)
Delay T
ΙPh
> (phases) 0.00 s to 30.00 s
or ∞ (ineffective)
Increments 0.01 s
Delay T
3Ι0
> (earth) 0.00 s to 30.00 s
or ∞ (ineffective)
Increments 0.01 s
Dropout ratio
Approx. 0.95 for Ι/Ι
N
≥ 0.5
Pickup times (fast relays) Approx. 25 ms
Dropout times Approx. 30 ms
Tolerances Currents 3 % of setting value or 1 % nominal current
Times 1 % of setting value or 10 ms
The set times are pure delay times
Inverse Time Stages (IEC)
Pickup value
Ι
Ph
(phases)
for Ι
N
= 1 A
0.10 A to 4.00 A
or ∞ (ineffective)
Increments 0.01 A
for Ι
N
= 5 A
0.50 A to 20.00 A
or ∞ (ineffective)
Pickup value 3Ι
0P
(earth) for Ι
N
= 1 A
0.05 A to 4.00 A
or ∞ (ineffective)
Increments 0.01 A
for Ι
N
= 5 A
0.25 A to 20.00 A
or ∞ (ineffective)
Time multipliers T
ΙP
(phases) 0.05 s to 3.00 s
or ∞ (ineffective)
Increments 0.01 s
T
3Ι0P
(earth) 0.05 s to 3.00 s
or ∞ (ineffective)
Increments 0.01 s
Technical Data
4.3 Overcurrent protection (optional)
240 SIPROTEC 4, 7VK61, Manual
C53000-G1176-C159-5, Edition 05.2018