ABB Relion 620 Series - APAT: (All Poles All the Time); Autorecloser Logic

1MAC308145-MB E Section 3
RER620 application
RER620 59
Application Manual
• The recloser is set to trip on a single-phase fault in single-phase fashion, but lockout
in three-phase fashion (OOAP). A fault is detected and the recloser trips open on one
phase and will lockout on all three phases if the fault detected is a permanent fault.
• The recloser is set to trip on a single-phase fault (OOAP). A two-phase fault is
detected and the recloser trips open on all three-phases and will lockout on all three
phases if the fault detected is a permanent fault.
Figure 42: OPUP - OOAP logic
3.4.1.4 APAT: (All Poles All the Time)
• In this case, the single phase function is disabled. The recloser operates as a three
phase recloser. However, we still have three actuators and three position sensors for
the three poles, so the controls must operate independently. However, for any fault,
the trip, reclose, lockout signals are issued to all three phases.
3.4.2 Autorecloser logic
A full Autorecloser functionality consists of 3 sections or parts having 6 SDAIGGIO
supporting input function blocks, 1 main SDARREC function block and 1 SDAOGGIO
supporting output function block.
The first part of the function called active phase detection which determines which
phase(s), if any, are to be tripped from the connected inputs to the consist of per phase trip
/ pickup signals from various protection functions, and the states of all poles, if any of them
is / are open . This determination is based on the condition of each phase (whether tripped,
only picked up or already open).
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