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P123, P127: Autorecloser (79)
MiCOM P123 and P127 relays include a 4-shot triphase autorecloser. All the
programmed protection functions may independently start any of the shots and the
user can program which functions are allowed to trip after any of the shots. This
makes possible special reclosing cycles e.g. as requested for coordination with
fuses in distribution with tapped transformers.
To prevent excessive number of reclosing cycle in a short period of time, a setting
Can be used to define the maximum number of reclosing Cycle allowed in a period of time after the first one was detected.
Dead and reclaim times are freely adjustable.
counter stores the number of reclose commands. This information is free locally or
remotely. To inform operator that autorecloser has been blocked internally or
externaly, output relays can be assigned to theses signals.