4.3 APPLICATION NOTES
4.3.1 SETTING GUIDELINES
The residual voltage setting, CTS VN< Inhibit and the r
esidual current setting, CTS IN> Set, should be set to avoid
unwanted operation during healthy system conditions. For example:
● CTS VN< Inhibit should be set to 120% of the maximum steady state residual voltage.
● CTS IN> Set will typically be set below minimum load current.
● CTS Time Delay is generally set to 5 seconds.
Where the magnitude of residual voltage during an earth fault is unpredictable, the element can be disabled to
prevent protection elements being blocked during fault conditions.
P24xM Chapter 14 - Supervision
P24xM-TM-EN-2.1 281
To Next Page
Loading...
