Ground Fault Detection For V0/I0-Φ Measurement - Siemens 7SC80 Manual

Functions
2.13 Ground Fault Protection 64, 67N(s), 50N(s), 51N(s)
[7sc80-erdfehler-iee-cos-sin-20121203, 1, en_US]
Figure 2-86
Ground Fault Detection for V0/I0-φ Measurement
2.13.2
Voltage Element
The voltage element relies on a pickup initiated by the displacement voltage V
faulty phase is determined. The displacement voltage V
254
Logic diagram of the V > element for cos-φ -/sin-φ -measurement
Ns
or 3 · V
0
can be directly applied to the device, or the summa-
0
SIPROTEC Compact, 7SC80, Manual
E50417-G1140-C486-A8, Edition 07.2017
. Additionally, the
0