Siemens SIPROTEC 7SK80 - Page 182

Functions
2.11 Ground Fault Protection 64, 67N(s), 50N(s), 51N(s)
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A4, Release date 08.2010
182
Figure 2-61 Logic diagram of the V
N
> element for cos-ϕ /sin-ϕ measurement