Need to create a new LN of group P (Protection), as "PCDP" to represent the Pole Discrepancy Protection.
To create PDSC logical node definition in 7-4 ed3
This protection is used to detect the pole discrepancy and send, after a waiting time, a general trip order.
Needed for some PACS functions.
Since 7-500 proposes PDSC, it could be defined in Edition 3 of 7-4.