Technical Data
4.13 Ground Fault Protection 50N(s), 51N(s)
SIPROTEC, 7SJ61, Manual
C53000-G1140-C210-1, Release date 02.2008
349
Logarithmic Inverse Trip Time characteristic with knee point
Figure 4-12 Trip-time characteristics of the inverse-time ground fault protection 51Ns with logarithmic
inverse characteristic with knee point (example for 51Ns = 0.004 A)
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