CHAPTER 5: SETTINGS CONTROL ELEMENTSL90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-32155.8.8 Synchrocheck (ANSI 25)SETTINGS CONTROL ELEMENTS SYNCHROCHECK SYNCHROCHECK 1(10)The synchronism check function supervises the paralleling of two parts of a system that are to be joined by the closure ofa circuit breaker. The synchrocheck elements are typically used at locations where the two parts of the system areinterconnected through at least one other point in the system. SYNCHROCHECK 1 SYNCHK1 FUNCTION:DisabledRange: Disabled, Enabled SYNCHK1 BLOCK:OffRange: FlexLogic operand SYNCHK1 V1 SOURCE:SRC 1Range: SRC 1, SRC 2, SRC 3, SRC 4 SYNCHK1 V2 SOURCE:SRC 2Range: SRC 1, SRC 2, SRC 3, SRC 4 SYNCHK1 MAX VOLTDIFF: 10000 VRange: 0 to 400000 V in steps of 1 SYNCHK1 MAX ANGLEDIFF: 30°Range: 0 to 100° in steps of 1 SYNCHK1 MAX FREQDIFF: 1.00 HzRange: 0.00 to 2.00 Hz in steps of 0.01 SYNCHK1 MAX FREQHYSTERESIS: 0.06 HzRange: 0.00 to 0.10 Hz in steps of 0.01 SYNCHK1 SYNC CLOSE:OffRange: FlexLogic operand SYNCHK1 S-CLS MAXdF: 0.50 HzRange: 0.10 to 2.00 Hz in steps of 0.01 SYNCHK1 S-CLS MINdF: 0.10 HzRange: 0.01 to 1.00 Hz in steps of 0.01 SYNCHK1 S-CLS BRKTIME: 0.035 sRange: 0.010 to 0.500 s in steps of 0.001 SYNCHK1 V2 MAG CORRFACTOR: 1.00Range: 0.10 to 10.00 in steps of 0.01 SYNCHK1 V2 ANGLESHIFT: 0Range: -180 to +180 degrees in steps of 1 SYNCHK1 DEAD SOURCESELECT: LV1 and DV2Range: None, LV1 and DV2, DV1 and LV2, DV1 or DV2,DV1 Xor DV2, DV1 and DV2 SYNCHK1 DEAD V1MAX VOLT: 0.30 puRange: 0.04 to 1.25 pu in steps of 0.01 SYNCHK1 DEAD V2MAX VOLT: 0.30 puRange: 0.04 to 1.25 pu in steps of 0.01 SYNCHK1 LIVE V1MIN VOLT: 0.70 puRange: 0.04 to 1.25 pu in steps of 0.01 SYNCHK1 LIVE V2MIN VOLT: 0.70 puRange: 0.04 to 1.25 pu in steps of 0.01 SYNCHK1 TARGET:Self-resetRange: Self-reset, Latched, Disabled SYNCHK1 EVENTS:DisabledRange: Disabled, Enabled
