Siemens Siprotec 7UM611 Manual page 137

Figure 2-47
Figure 2-48
7UM61 Manual
C53000-G1176-C127-3
2.22 Sensitive Earth Fault Protection (ANSI 51GN, 64R)
Logic Diagram of the Sensitive Earth Fault Protection
Application Case as Rotor Earth Fault Protection (7XR61 – Series Device for
Rotor Earth Fault Protection; 3PP13 – from Uexc > 150 V, Resistors in 7XR61
are then to be Shorted!)
137