Siemens SIPROTEC 4 7VK61 Manual page 239

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Figure 4-3
High-set Current Stages
Pickup valueΙ >> (phases)
Ph
SIPROTEC 4, 7VK61, Manual
C53000-G1176-C159-5, Edition 05.2018
Trip time characteristics of inverse time overcurrent stage, acc. ANSI/IEEE (phases and earth)
for Ι = 1 A
N
for Ι = 5 A
N
0.10 A to 25.00 A
or ∞ (ineffective)
0.50 A to 125.00 A
or ∞ (ineffective)
Technical Data
4.3 Overcurrent protection (optional)
Increments 0.01 A
239