If only two SESRSYN functions are provided in the same IED, the connections andsettings are according to the SESRSYN functions for WA1_QA1 and TIE_QA1.15.1.4 Setting guidelines M12550-3 v14The setting parameters for the Synchronizing, synchrocheck and energizing checkfunction SESRSYN are set via the local HMI (LHMI) or PCM600.This setting guidelines describes the settings of the SESRSYN function via theLHMI.Common base IED value for primary voltage ( UBase ) is set in a Global basevalue function, GBASVAL, found under Main menu//Configuration/Powersystem/GlobalBaseValue/GBASVAL_X/UBase. The SESRSYN function has onesetting for the bus reference voltage (GblBaseSelBus) and one setting for the linereference voltage (GblBaseSelLine) which independently of each other can be setto select one of the twelve GBASVAL functions used for reference of base values.This means that the reference voltage of bus and line can be set to different values.The settings for the SESRSYN function are found under Main menu/Settings/IEDSettings/Control/Synchronizing(25,SC/VC)/SESRSYN(25,SC/VC):X has beendivided into four different setting groups: General, Synchronizing, Synchrocheckand Energizingcheck.General settingsOperation: The operation mode can be set On or Off. The setting Off disables thewhole function.GblBaseSelBus and GblBaseSelLineThese configuration settings are used for selecting one of twelve GBASVALfunctions, which then is used as base value reference voltage, for bus and linerespectively.SelPhaseBus1 and SelPhaseBus2Configuration parameters for selecting the measuring phase of the voltage forbusbar 1 and 2 respectively, which can be a single-phase (phase-neutral), two-phase (phase-phase) or a positive sequence voltage.SelPhaseLine1 and SelPhaseLine2Configuration parameters for selecting the measuring phase of the voltage for line1 and 2 respectively, which can be a single-phase (phase-neutral), two-phase(phase-phase) or a positive sequence voltage.CBConfigThis configuration setting is used to define type of voltage selection. Type ofvoltage selection can be selected as:Section 15 1MRK 506 369-UEN BControl608 Line distance protection REL670 2.2 IECApplication manual