CHAPTER 5: SETTINGS GROUPED ELEMENTSL90 LINE CURRENT DIFFERENTIAL SYSTEM – INSTRUCTION MANUAL 5-2435TD MULTIPLIER — Specifies a multiple of the base curve shape specified by the CURVE setting. Programming this value tozero results in an instantaneous response to all current levels above pickup.RESET — The “Instantaneous” reset method is intended for applications with other relays, such as most static relays, whichset the energy capacity directly to zero when the current falls below the reset threshold. The “Timed” reset method can beused where the relay must coordinate with electromechanical relays.VOLTAGE RESTRAINT — Enables and disables the phase time overcurrent voltage restraint feature.BLOCK A — Assertion of the operand assigned to this setting blocks phase A of the phase time overcurrent element.EVENTS — Enables and disables the logging of phase time overcurrent events in the sequence of events recorder.Figure 5-130: Phase time overcurrent 1 logic5.7.8.4 Phase instantaneous overcurrent (ANSI 50P, IEC PIOC)SETTINGS GROUPED ELEMENTS SETTING GROUP 1(6) PHASE CURRENT PHASE IOC 1(8) PHASE IOC 1 PHASE IOC1FUNCTION: DisabledRange: Disabled, Enabled PHASE IOC1 SIGNALSOURCE: SRC 1Range: SRC 1, SRC 2, SRC 3, SRC 4 PHASE IOC1PICKUP: 1.000 puRange: 0.020 to 30.000 pu in steps of 0.001 PHASE IOC1 PICKUPDELAY: 0.00 sRange: 0.00 to 600.00 s in steps of 0.01 PHASE IOC1 RESETDELAY: 0.00 sRange: 0.00 to 600.00 s in steps of 0.01
