LD0.OLATCC1 Tap changer control with voltage regulator (1) - Arc protection - Bay control and measurement - Merging unit - Transformer protection - 2 winding - Feeder protection - Voltage regulation - Capacitor bank protection - Busbar differential protection (high impedance) - Back-up protection - Motor protection - Busbar protection (voltage and frequency) - Interconnection protection - Power management/Load shedding - DNP3 Communication Manual - 620 series Relion Protection and Control - Relion Protection and Control - 2.0 FP1 IEC - IEC - 22.05.2023

Table 1. LD0.OLATCC1 Tap changer control with voltage regulator (1)

IEC 61850 name	SA name	Description	Values
LD0.OLATCC1
.ParOp.stVal	PARALLEL	Parallel or single op.	1=Parallel
.Auto.stVal	AUTO	Auto or manual op.	1=Auto
.TapOpR.stVal	RAISE_OWN	Raise command	1=Raise
.TapOpL.stVal	LOWER_OWN	Lower command	1=Lower
.TapOpErr.stVal	ALARM	Alarm	1=Alarm
.EndPosR.stVal	–	Block raise	1=Raise
.EndPosL.stVal	–	Block lower	1=Lower
.LTCBlkAHi.stVal	BLKD_I_LOD	Over current blocking	1=Block
.LTCBlkVLo.stVal	BLKD_U_UN	Under voltage blocking	1=Block
.LTCRnbk.stVal	RNBK_U_OV	Raise voltage runback block	1=Block
.CircAHiBlk.stVal	BLKD_I_CIR	High circulating current block	1=Block
.Blk.stVal	BLKD_LTCBLK	External blocking	1=Block
.ErrPar.stVal	PAR_FAIL	Parallel failure detected	1=Failure