tMFPosDiff: Time delay for activation of the output OUTOFPOS.14.5.3.3 TCMYLTC and TCLYLTC general settings SEMOD171501-150 v6LowVoltTap: This gives the tap position for the lowest LV-voltage.HighVoltTap: This gives the tap position for the highest LV-voltage.mALow: The mA value that corresponds to the lowest tap position. Applicablewhen reading of the tap position is made via a mA signal.mAHigh: The mA value that corresponds to the highest tap position. Applicablewhen reading of the tap position is made via a mA signal.CodeType: This setting gives the method of tap position reading.UseParity: Sets the parity check On/Off for tap position reading when this is madeby Binary, BCD, or Gray code.tStable: This is the time that needs to elapse after a new tap position has beenreported to TCMYLTC until it is accepted.CLFactor: This is the factor designated “a” in equation 126. When a tap changeroperates at nominal load current (current measured on the HV-side), theContactLife counter decrements with 1, irrespective of the setting of CLFactor.The setting of this factor gives the weighting of the deviation with respect to theload current.InitCLCounter: The ContactLife counter monitors the remaining number ofoperations (decremental counter). The setting InitCLCounter then gives the startvalue for the counter that is, the total number of operations at rated load that the tapchanger is designed for.EnabTapCmd: This setting enables/disables the lower and raise commands to thetap changer. It shall be On for voltage control, and Off for tap position feedback tothe transformer differential protection T2WPDIF or T3WPDIF.TCMYLTC and TCLYLTC Setting group SEMOD171501-157 v3GeneralOperation: Switching the TCMYLTC or TCLYLTC function On/Off.IBase: Base current in primary Ampere for the HV-side of the transformer.tTCTimeout: This setting gives the maximum time interval for a raise or lowercommand to be completed.tPulseDur: Length of the command pulse (URAISE/ULOWER) to the tap changer.It shall be noticed that this pulse has a fixed extension of 4 seconds that adds to thesetting value of tPulseDur.1MRK 511 401-UEN A Section 14ControlBay control REC670 2.2 IEC 423Application manual
