Functions
2.29 Sensitive Earth Fault Protection (ANSI 51GN, 64R)
SIPROTEC, 7UM62, Manual
C53000-G1176-C149-7, Release date 03.2010
212
Figure 2-90 Application example as rotor earth fault protection
Note 3PP13 is only necessary if more than 0.2 A
eff
are flowing permanently; (rule: Uerr load > 150 V).
In this case the internal resistors Rpre inside the 7XR61 must be shorted.
Figure 2-91 Logic Diagram of the Sensitive Earth Fault Detection
1) Parameters and indications are only visible if Rotor Earth Fault Protection R, fn
(ANSI 64R) address 160 is set to Disabled.
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