The lock-out can then be manually reset after checking the primary fault by
activating the input reset lock-out RSTLKOUT.
If external conditions are required to initiate a closing circuit lock-out but not to
lockout trip, this can be achieved by activating input SETLKOUT. The setting
AutoLock = Off means that the internal trip will not activate lock-out so only
initiation of the input SETLKOUT will result in lock-out. This is normally the case
for overhead line protection where most faults are transient. Unsuccessful
autoreclose and back-up zone tripping can in such cases be connected to initiate
lock-out by activating the input SETLKOUT.
12.1.2.5 Example of directional data
GUID-08AC09AB-2B2F-4095-B06E-1171CF225869 v2
An example how to connect the directional data from different application
functions to the trip function is given below, see Figure
92:
1MRK 504 169-UEN A Section 12
Logic
Transformer protection RET650 2.2 IEC 249
Application manual
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