Technical FAQs

Ask a Question

Can the Micom Series 20 of type P127 Supports the CB Auto Reclosure protection function ?

P123, P127: Autorecloser (79)

MiCOM P123 and P127 relays include a 4-shot tri phase 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.

Was this helpful?
What can we do to improve the information ?