CHAPTER 5: SETTINGS GROUPED ELEMENTSC70 CAPACITOR BANK PROTECTION AND CONTROL SYSTEM – INSTRUCTION MANUAL 5-2095VOLTAGE DIF 1 STG 1 PKP DELAY — Specifies the pickup time delay, individually per each stage of alarming/tripping. Note thateach of the 12 comparators (four stages in three phases) uses an individual timer, but settings for these timers arecontrolled individually per each stage, not per phase. The timers use a common drop-out time delay specified by the nextsetting.VOLTAGE DIF 1 DPO DELAY — Controls a drop out delay for the operate FlexLogic operands. Note that individual stages applyindividually configurable pickup delays, but use this common drop out delay.VOLT DIF 1 BLK STG 1 to VOLT DIF 1 BLK STG 4 — These inputs are used to block the function on a per stage basis whenrequired. At minimum this function shall be blocked when the bank is offline, or else it operates unnecessarily. Eitherbreaker position or undercurrent indication via any available instantaneous function, or a combination, can be used forblocking. Also consider the VT fuse fail condition from both the bus and tap VT. When unblocked, the function becomesoperational after five cycles of intentional delay.Figure 5-107: Voltage differential logic5.7.8.8 Bank phase overvoltage (ANSI 59B, IEC PTOV)SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) VOLTAGE ELEMENTS BANK OVERVOLTAGE BANK OVERVOLTAGE 1(3) BANK OVERVOLTAGE 1 BANK OV 1FUNCTION: DisabledRange: Disabled, Enabled BANK OV 1 BUSSOURCE: SRC 1Range: SRC 1, SRC 2, SRC 3, SRC 4, SRC 5, SRC 6tPKPt DPOtPKPt DPOtPKPt DPOSETTINGSVOLTAGE DIF 1 BUSSOURCE:V1AV1BV1CVOLTAGE DIF 1 TAPSOURCE:V2AV2BV2CVNSETTINGSVA_dif =| VA_mag - kA*V2A_mag |or| VA_mag - kA*(V2A - VN)_mag |VOLTAGE DIF 1MATCH FACTOR A:SETTINGVOLTAGE DIF 1 STG1A PICKUP:SETTINGVOLTAGE DIF 1 STG2A PICKUP:SETTINGVOLTAGE DIF 1 STG3A PICKUP:SETTINGVOLTAGE DIF 1 STG4A PICKUP:VOLT DIF 1 STG 1A PKPFLEXLOGIC OPERANDVOLT DIF 1 STG 2A PKPFLEXLOGIC OPERANDVOLT DIF 1 STG 3A PKPFLEXLOGIC OPERANDVOLT DIF 1 STG 4A PKPFLEXLOGIC OPERANDtPKPt DPOTIMERSVOLTAGE DIF 1 STG 1PKP DELAY:VOLTAGE DIF 1 STG 2PKP DELAY:VOLTAGE DIF 1 STG 3PKP DELAY:VOLTAGE DIF 1 STG 4PKP DELAY:VOLT DIF 1 STG 1A OPVOLT DIF 1 STG 2A OPVOLT DIF 1 STG 3A OPFLEXLOGIC OPERANDVOLT DIF 1 STG 4A OPVOLT DIF 1 PKP BVOLTAGE DIF 1 DPODELAY:VOLT DIF 1 PKP AVOLT DIF 1 PKP CORVOLT DIF 1 PKPORVOLT DIF 1 OP BVOLT DIF 1 OP AVOLT DIF 1 OP CORVOLT DIF 1 OPORVOLT DIF 1 DPOPHASE C5 cycles0TIMERRUN 87V FUNCTIONPHASE BCOMMANDSAUTO-SETTINGPROCEDUREVOLTAGE DIF 1 BANKGROUND:SETTINGCOMMANDS/VOLTAGE DIF 1AUTO-SETTING:WRITE A NEW SETTINGANDVC_mag > 0.25 puVB_mag > 0.25 puVA_mag > 0.25 puSETTINGSVOLTAGE DIF 1FUNCTION:Enabled = 1VOLT DIF 1 BLK STG1:Off = 0VOLT DIF 1 BLK STG2:Off = 0VOLT DIF 1 BLK STG3:Off = 0VOLT DIF 1 BLK STG4:Off = 0ANDINHIBIT STAGE 1INHIBIT STAGE 3INHIBIT STAGE 4INHIBIT STAGE 2ANDManualAutoANDApply?FLEXLOGIC OPERANDFLEXLOGIC OPERANDFLEXLOGIC OPERANDFLEXLOGIC OPERANDFLEXLOGIC OPERANDFLEXLOGIC OPERANDFLEXLOGIC OPERANDVA_dif > PICKUPRUNANDVA_dif > PICKUPRUNANDVA_dif > PICKUPRUNANDVA_dif > PICKUPRUNAND834742A1.DWG
