Technical Data
4.3 Time Overcurrent Protection
SIPROTEC, 7VK61, Manual
C53000-G1176-C159-3, Release date 05.2009
245
High set current stages
Overcurrent stages
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 3
I
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)
Pickup value
I
Ph
>> (phases)
0.00 s to 30.00 s
or
∞
(ineffective)
Increments 0.01 s
Delay T
3
I
0
>> (earth)
0.00 s to 30.00 s
or
∞
(ineffective)
Increments 0.01 s
Dropout ratio
Approx. 0.95 for
I
/
I
N
≥
0.5
Pickup times (fast relays/high-speed relays)
Approx. 25/20 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
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 3
I
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)
Delay T
I
Ph
> (phases)
0.00 s to 30.00 s
or
∞
(ineffective)
Increments 0.01 s
Delay T
3
I
0
> (earth)
0.00 s to 30.00 s
or
∞
(ineffective)
Increments 0.01 s
Dropout ratio
Approx. 0.95 for
I
/
I
N
≥
0.5
Pickup times (fast relays/high-speed relays)
Approx. 25/20 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
Summary of Contents for Siprotec 7VK61
Page 8: ...Preface SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 8 ...
Page 14: ...Contents SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 14 ...
Page 316: ...Literature SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 316 ...
Page 328: ...Glossary SIPROTEC 7VK61 Manual C53000 G1176 C159 3 Release date 05 2009 328 ...